Half Moon Bay State Beach Weather
Beach • San Francisco Bay Area
Four miles of sand south of Pillar Point make up Half Moon Bay State Beach, a California State Parks unit. It has four access points, called Francis, Venice, Dunes, and Roosevelt. Each sits about a half mile west of Highway 1 at the end of a city street in Half Moon Bay. Low dunes and the paved Coastside Trail run behind the sand. Francis Beach has the campground and a weekend visitor center, so you can camp a few steps from the beach.
Plan your week
10-Day Forecast
Hour by hour
Hourly Forecast
Current Conditions
Comfort Breakdown
Half Moon Bay State Beach weather today and through the year
It's 55°F at Half Moon Bay State Beach right now (feels like 52°F), with 5 mph wind and a comfort score of 79. Monday's forecast high at Half Moon Bay State Beach is 56°F, 6°F below the mid November normal of 62°F. No fog in the forecast for today at Half Moon Bay State Beach. In November, 16% of morning hours here are foggy on average. The best window today is 9 AM to noon, at about 55°F with a 7 mph wind (comfort 57).
September is the warmest month at Half Moon Bay State Beach, with an average high of 69°F. December is the coldest, with an average low of 45°F. December is the wettest month (5.0 in.), out of about 24.8 in. a year. By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Half Moon Bay State Beach are September, October, and August. The best hours are usually 2 PM to 5 PM in September, 1 PM to 4 PM in October, and 1 PM to 4 PM in August.
These beaches face west across the open curve of Half Moon Bay, south of the shelter that Pillar Point gives the harbor. Nothing stands between the sand and the cold ocean water offshore. The summer marine layer, the low sheet of fog and cloud that forms over that water, arrives here first and leaves last. The flat coastal terrace behind the dunes offers no height to climb above it, unlike Montara and Moss Beach, where Montara Mountain rises right behind town.
Forecast updated November 15, 2026 at 4:00 AM PST. Climate figures come from NOAA 1991-2020 normals. Hourly patterns come from NOAA's HRRR hourly analysis from September 2014 to April 2026.
What to expect at Half Moon Bay State Beach in the next few days
Active National Weather Service alerts
- High Surf Advisory until Tue 4:00 AM
Fog
No fog in the forecast for today at Half Moon Bay State Beach. In November, 16% of morning hours here are foggy on average.
Best time to go
The best window today is 9 AM to noon, at about 55°F with a 7 mph wind (comfort 57).
Best day this week
Of the next 7 days, Friday looks best for Half Moon Bay State Beach, with a 61°F high and midday comfort near 78. Thursday looks weakest (45).
Rain
Next good chance of rain: today (80%, about 0.48 in.).
Ocean water
67°F at the Offshore Half Moon Bay (24 nautical miles SSW of San Francisco) NOAA station. NOAA data
Tides (Pillar Point Harbor (Half Moon Bay))
- High 3.9 ft at 4:11 AM today
- Low 3.5 ft at 7:41 AM today
- High 4.7 ft at 1:15 PM today
- Low 0.4 ft at 9:12 PM today
Live weather map
Weather around Half Moon Bay State Beach right now
Overcast and 55° at Half Moon Bay State Beach right now.
About the live weather map for Half Moon Bay State Beach
The map centers on Half Moon Bay State Beach and stacks fog, satellite clouds, and precipitation radar on one view. Clouds come from the GOES-West satellite and rain from NOAA radar, and both show current conditions. Fog comes from our HRRR-based fog model, and the slider steps through its forecast for the next 12 hours.
Dots mark nearby places with their current temperature, colored by comfort score. Use the layer buttons to turn any layer off, or open the full map for every destination in the region.
Nearby Temperature Comparison
Conditions at nearby San Francisco Bay Area destinations
Tip: Bay Area temperatures can change by 20 to 30°F over a short distance because of microclimates.
Half Moon Bay State Beach vs nearby places
Typical summer conditions compared with Half Moon Bay State Beach, from the same NOAA HRRR hourly record. The list shows the closest places, then nearby places whose climate differs the most.
| Place | Distance | Summer afternoons | Morning fog | Afternoon wind | Compared with Half Moon Bay State Beach |
|---|---|---|---|---|---|
| Half Moon Bay | 1.3 mi | +2°F | 64% | 8 mph | more summer morning fog (64% vs 54% of morning hours) |
| Moss Beach | 5.1 mi | -3°F | 66% | 9 mph | more summer morning fog (66% vs 54% of morning hours) |
| Montara | 6 mi | -4°F | 60% | 8 mph | about 4°F cooler on summer afternoons |
| Woodside | 11.1 mi | +19°F | 17% | 8 mph | about 19°F warmer on summer afternoons and less summer morning fog (17% vs 54% of morning hours) |
| Los Altos Hills | 17.9 mi | +19°F | 16% | 9 mph | about 19°F warmer on summer afternoons and less summer morning fog (16% vs 54% of morning hours) |
| Rancho San Antonio | 22.5 mi | +20°F | 16% | 9 mph | about 20°F warmer on summer afternoons and less summer morning fog (16% vs 54% of morning hours) |
Places with a climate like Half Moon Bay State Beach's
- Daly City (16 mi away): nearly the same temperatures every month
- Pescadero (16 mi away): nearly the same temperatures every month
- West Portal (18 mi away): nearly the same temperatures every month
Climate Dashboard
Current conditions vs. NOAA normals and recent destination baseline
What the Half Moon Bay State Beach climate comparisons mean
These cards compare recent conditions at Half Moon Bay State Beach with the available local baseline. Temperature and year-to-date rainfall use long-term normals when available. Fog, sunshine, wind, and comfort use the matching recent or modeled baseline identified on each card.
Positive and negative differences describe how Half Moon Bay State Beach departs from its own usual pattern. They should not be read as a direct comparison with another city or as a forecast beyond the period shown.
Half Moon Bay State Beach weather by month
September is the warmest month at Half Moon Bay State Beach, with an average high of 69°F. December is the coldest, with an average low of 45°F. December is the wettest month (5.0 in.), out of about 24.8 in. a year. Morning fog peaks in July, when fog or low cloud covers 62% of the hours from 6 to 10 AM. November has the clearest middays, with clouds covering about 26% of the sky from 11 AM to 3 PM.
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Half Moon Bay State Beach are September, October, and August. The best hours are usually 2 PM to 5 PM in September, 1 PM to 4 PM in October, and 1 PM to 4 PM in August.
| Month | Avg high | Avg low | Rain | Rainy days | Morning fog | Midday cloud | Afternoon wind | Daylight | Comfort |
|---|---|---|---|---|---|---|---|---|---|
| Jan | 58°F | 45°F | 4.8 in | 9 | 13% | 36% | 7 mph | 9.9 h | 57 |
| Feb | 59°F | 46°F | 4.8 in | 9 | 12% | 31% | 10 mph | 10.8 h | 58 |
| Mar | 61°F | 47°F | 3.6 in | 8 | 19% | 37% | 10 mph | 11.9 h | 58 |
| Apr | 62°F | 48°F | 1.8 in | 5 | 24% | 40% | 11 mph | 13.2 h | 63 |
| May | 64°F | 51°F | 0.8 in | 4 | 31% | 50% | 11 mph | 14.2 h | 60 |
| Jun | 66°F | 52°F | 0.2 in | 2 | 43% | 48% | 10 mph | 14.7 h | 68 |
| Jul | 67°F | 54°F | 0.0 in | 1 | 62% | 58% | 9 mph | 14.5 h | 70 |
| Aug | 68°F | 55°F | 0.1 in | 1 | 57% | 55% | 9 mph | 13.6 h | 76 |
| Sep | 69°F | 54°F | 0.1 in | 2 | 44% | 45% | 9 mph | 12.3 h | 83 |
| Oct | 68°F | 52°F | 1.2 in | 5 | 27% | 32% | 9 mph | 11.1 h | 77 |
| Nov | 62°F | 48°F | 2.4 in | 7 | 16% | 26% | 7 mph | 10.1 h | 65 |
| Dec | 58°F | 45°F | 5.0 in | 9 | 14% | 36% | 7 mph | 9.6 h | 38 |
Morning fog is the share of hours from 6 to 10 AM with fog or low cloud. Midday cloud is the average from 11 AM to 3 PM, and afternoon wind is the average from 1 to 5 PM. The highlighted rows are the most comfortable months.
In summer, recent daily NOAA readings at Half Moon Bay State Beach average about 5°F cooler than the 1991-2020 normals. The normals average over a wider area that also covers warmer land behind the shoreline. Read the monthly highs as a rough range, and use the recent months below for what Half Moon Bay State Beach has actually seen.
What makes Half Moon Bay State Beach's weather different
Among the 17 San Francisco Bay Area beaches we track, Half Moon Bay State Beach has the foggiest summer mornings and the cloudiest summer middays. It also has the 3rd-calmest summer afternoons.
- #1of 17
foggiest summer morningsamong San Francisco Bay Area beaches
- #1of 17
cloudiest summer middaysamong San Francisco Bay Area beaches
- #3of 17
calmest summer afternoonsamong San Francisco Bay Area beaches
When the fog burns off
68%of 8 AM hours foggy in July
Fog or low cloud covers Half Moon Bay State Beach in 68% of 8 AM hours in July, the foggiest month. It often lingers, and 40% of mid-afternoon hours are still foggy. February mornings are the least foggy (12%).
When the wind picks up
11 AMwhen afternoon wind builds, February–October
From February through October, wind at Half Moon Bay State Beach typically builds after 11 AM. In April it peaks around 4 PM, averaging 12 mph with 20% of those hours windy, while mornings average 5 mph.
Microclimate
−4°FMontara, 6 mi away, on summer afternoons
Montara, 6 miles away, runs about 4°F cooler than Half Moon Bay State Beach on summer afternoons.
Daylight
9.6–14.7 hof daylight, Dec to Jun
Days at Half Moon Bay State Beach range from about 9.6 hours in December to 14.7 hours in June. In mid-June the sun sets around 8:31 PM, and in mid-December around 4:58 PM.
Seasons at Half Moon Bay State Beach
- Warm seasonJul 3 – Oct 26 · highs 67°F+
The warm season lasts about 3.8 months, from Jul 3 to Oct 26, when the average high is 67°F or warmer. Highs peak around Sep 8 at about 69°F.
- Cool seasonNov 30 – Mar 2 · highs 60°F or lower
The cool season runs from Nov 30 to Mar 2, when the average high is 60°F or lower. The coldest nights come around Dec 8, with an average low near 45°F.
- Rainy seasonNov 8 – Apr 7 · 82% of the year's rain
The rainy season runs from Nov 8 to Apr 7, when a day has at least a 20% chance of measurable rain. That stretch brings 82% of the year's rain.
The dark line marks today. Season dates come from the smoothed daily NOAA 1991-2020 normals. Counting from Oct. 1, a typical year has its first inch of rain by Oct 27 and half of its annual total by Jan 25.
Days per year and extremes (Nov 1, 2024 to Oct 31, 2026)
This record runs from Nov 1, 2024 to Oct 31, 2026. Over this record, Half Moon Bay State Beach averaged no days at 90°F or hotter and no freezing nights. It averaged 15 days a year with at least half an inch of rain and 2 afternoons with wind of 20 mph or more at 2 PM. About 168 mornings a year had 3 or more hours of fog or low cloud.
In the same record, the hottest day was Mar 17, 2026 (87°F) and the coldest night was Jan 27, 2025 (35°F). The wettest day was Nov 23, 2024 (2.66 in.), and the strongest 2 PM gust was 51 mph on Feb 4, 2025.
- 0days at 90°F or hotter
- 0nights at or below freezing
- 15days with ½ in. of rain or more
- 2afternoons with 20+ mph wind
- 168mornings with 3+ hours of fog or low cloud
- Hottest day87°FMar 17, 2026
- Coldest night35°FJan 27, 2025
- Wettest day2.66 inNov 23, 2024
- Strongest 2 PM gust51 mphFeb 4, 2025
What shapes Half Moon Bay State Beach's weather
The Santa Cruz Mountains run along the east side of the terrace, a few miles back from the shore. In summer they hold the fog against the coast, and the low point where Highway 92 crosses toward Crystal Springs Reservoir pulls some of it inland. Downtown Half Moon Bay, about a mile from the water, is no escape, since its summer mornings are often just as gray.
Afternoon wind from the northwest shapes the rest of a day at Half Moon Bay State Beach. Spring and summer afternoons often bring a steady onshore breeze straight off the water, which makes the sand feel colder than the air temperature suggests. Windsurfers use it. Picnickers look for shelter behind the dunes or in the Francis Beach picnic area.
Fall brings the warmest days of the year. The pressure pattern that drives summer fog weakens in September and October, and by October mornings are much clearer than in summer. Winter brings Pacific storms, rain, and the largest surf of the year.
Tips for visiting Half Moon Bay State Beach
Dogs stay off the sand
Dogs are prohibited on these beaches at all times. Leashed dogs (six feet or shorter) are allowed on the Coastside Trail, in the campground, and in the day-use picnic areas.
Pick the right access point
Francis Beach (95 Kelly Avenue) has a paved ramp to the sand, the big picnic area, and the campground. Venice has outdoor showers, and Dunes and Roosevelt are both reached from the end of Young Avenue.
Treat the surf with respect
State Parks warns that the water is very cold year-round and that strong rip currents can pull even experienced swimmers offshore.
Reserve campsites ahead
Francis Beach campsites must be booked through ReserveCalifornia, so reserve before you go.
Use the Coastside Trail on gray days
About three miles of trail runs along the inland edge of the beaches, with access from all four parking lots. It makes a good walk or ride when the sand is cold and windy.
Come between 8 a.m. and sunset
State Parks sets day-use hours from 8 a.m. to sunset. On gray summer days, the afternoon end of that window is usually the brighter one.
Half Moon Bay State Beach through the seasons
- Spring (March–May)
- Spring is often the windiest stretch of the year, with steady northwest afternoon breezes and clear air between foggy spells. That suits windsurfers better than people sitting on the sand.
- Summer (June–August)
- Summer is peak fog season. Mornings are usually gray, and many afternoons stay cool and breezy, though the campground stays busy anyway.
- Fall (September–October)
- The warmest beach days of the year usually come in September and October, and morning fog thins as fall goes on.
- Winter (November–February)
- Winter is storm season, with rain, big swell, and strong currents. The free Francis Beach visitor center is open weekends when weather and volunteers permit.
Activities and the weather that matters
- Surfing and windsurfing: State Parks lists both here. Windsurfers want the afternoon northwest breeze. Surfers usually prefer calm mornings before it builds. The offshore Half Moon Bay buoy reports current water temperature.
- Camping at Francis Beach: Expect damp, foggy nights in summer and cold evenings year-round. Fall nights are usually clearer and less damp than summer's.
- Walking or biking the Coastside Trail: The trail works in almost any weather except heavy rain. A strong northwest wind makes the southbound leg easy and the return slow.
- Shore fishing: State Parks lists shore fishing among the beach's draws. Calm, low-swell days are safest on open sand.
Official sources and current conditions
- California State Parks: Half Moon Bay State Beach
- ReserveCalifornia: campsite reservations
- NOAA tide predictions: Pillar Point Harbor
- NOAA buoy 46012: Half Moon Bay
Numbers on this page come from NOAA data. The text draws on the official sources linked above.
Historical Climate Data
Long-term weather patterns and climate data
Data sources: Recent temperatures come from NOAA URMA and recent precipitation from NOAA Stage IV. Fog, cloud, wind, humidity, and sunshine come from NOAA HRRR, and long-term baselines from NOAA 1991-2020 climate normals.
Climate Overview
Based on NOAA 30-year temperature/rain normals (1991-2020) with recent fog/sun baseline
🌟 Best Months to Visit
⚠️ Challenging Months
Monthly Breakdown
| Month | Comfort | High/Low | ☀️ Sun | 🌫️ Fog | 💧 Rain | Perfect |
|---|---|---|---|---|---|---|
| November 2024 | 77 | 60.3° / 46.5° | 6.3h | 5d | 4.22" | 14 |
| December 2024 | 71 | 60° / 47.7° | 5.1h | 7d | 5.91" | 14 |
| January 2025 | 83 | 59.2° / 43° | 6.9h | 2d | 0.18" | 22 |
| February 2025 | 71 | 58.5° / 44.2° | 6h | 8d | 7.49" | 11 |
| March 2025 | 74 | 57.6° / 45.7° | 7h | 5d | 2.55" | 13 |
| April 2025 | 75 | 56.8° / 47.2° | 7.8h | 10d | 0.52" | 11 |
| May 2025 | 78 | 58.6° / 49.1° | 9h | 15d | 0.19" | 12 |
| June 2025 | 73 | 58.6° / 51.4° | 7.9h | 22d | 0" | 9 |
| July 2025 | 72 | 60.7° / 54.9° | 6h | 26d | 0" | 6 |
| August 2025 | 77 | 63.9° / 55.4° | 7h | 23d | 0" | 10 |
| September 2025 | 78 | 66.4° / 57.8° | 6.7h | 19d | 0.09" | 10 |
| October 2025 | 81 | 64.9° / 51.8° | 7.1h | 11d | 0.89" | 19 |
| November 2025 | 76 | 62.2° / 49.8° | 6h | 8d | 3.7" | 13 |
| December 2025 | 74 | 61° / 47.8° | 5.2h | 7d | 4.64" | 16 |
| January 2026 | 80 | 62.9° / 47.8° | 6.5h | 3d | 5.28" | 22 |
| February 2026 | 77 | 62.1° / 48° | 6.3h | 2d | 3.94" | 18 |
| March 2026 | 87 | 65.8° / 47.1° | 9.3h | 8d | 0.02" | 23 |
| April 2026 | 80 | 61° / 49.8° | 8.4h | 5d | 3.19" | 18 |
| May 2026 | 76 | 59.5° / 50.6° | 8.2h | 15d | 0.48" | 15 |
| June 2026 | 79 | 61.6° / 53.3° | 8.5h | 15d | 0" | 13 |
| July 2026 | 75 | 62.5° / 55.3° | 6.6h | 20d | 0" | 12 |
| August 2026 | 74 | 62.9° / 56.3° | 6.5h | 28d | 0" | 5 |
| September 2026 | 83 | 65° / 54.6° | 7.8h | 9d | 0.03" | 19 |
| October 2026 | 86 | 66.1° / 50° | 8h | 8d | 0.15" | 25 |
Climate Trends
Average Temperature by Month
About the Half Moon Bay State Beach climate charts
The temperature chart compares average monthly highs and lows at Half Moon Bay State Beach, showing both the seasonal cycle and the typical day-to-night range. The comfort chart summarizes how often the combined weather pattern is favorable rather than judging temperature alone.
Precipitation shows the total recorded or modeled rainfall for each month at Half Moon Bay State Beach. Sunshine compares average bright-sky hours with the daylight available, while fog shows the average number of morning fog or low-cloud hours per day. Switch between the chart tabs to compare the same months across each measure.
Hourly Temperature, Fog, Wind, Cloud Cover, and Solar Radiation Patterns
Average local hour by month from 2014-09-30 to 2026-04-30
- Temperature: At Half Moon Bay State Beach, the warmest typical hour is 3 PM in October (66°F). The coldest is 6 AM in February (48°F).
- Fog: Fog or low cloud covers Half Moon Bay State Beach in 68% of 8 AM hours in July, the foggiest month. It often lingers, and 40% of mid-afternoon hours are still foggy. February mornings are the least foggy (12%).
- Wind: From February through October, wind at Half Moon Bay State Beach typically builds after 11 AM. In April it peaks around 4 PM, averaging 12 mph with 20% of those hours windy, while mornings average 5 mph.
- Cloud Cover: November middays are the clearest at Half Moon Bay State Beach (26% average cloud cover), and July middays are the cloudiest (58%).
- Solar Radiation: The strongest typical sun at Half Moon Bay State Beach comes at 1 PM in June, averaging 689 W/m².
How to read the hourly heatmaps for Half Moon Bay State Beach
This heatmap shows how average temperature at Half Moon Bay State Beach changes by hour and month. Read left to right for the seasons and top to bottom for the time of day. Warmer colors mark the usual afternoon peaks, and cooler colors show overnight and winter lows.
This heatmap shows when fog or low cloud is most likely at Half Moon Bay State Beach. Darker cells mark the months and hours when fog has been most common. They help separate overnight or morning fog from cloud that tends to linger into the afternoon.
This heatmap shows the typical hourly wind pattern at Half Moon Bay State Beach through the year. It makes recurring afternoon wind, calmer overnight periods, and seasonal changes easier to compare than a single daily wind value.
This heatmap shows average cloud cover at Half Moon Bay State Beach for every month and hour. Use it to see whether cloudiness is mainly an overnight and morning pattern or commonly persists during the part of the day you plan to visit.
This heatmap shows the average solar radiation reaching Half Moon Bay State Beach by month and hour. Brighter cells indicate the strongest typical sun, while muted cells can reflect nighttime, shorter winter days, cloud cover, smoke, or terrain shading.
Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage. The red marker shows the current month and hour.
How recent months compared at Half Moon Bay State Beach
- October 2026 recap: October 2026 at Half Moon Bay State Beach averaged a high of 66°F, 2°F cooler than the 1991-2020 normal of 68°F. It brought 0.15 in. of rain, compared with a normal of 1.19 in.
- Rain year: The 2025-26 rain year (Oct. 1 to Sep. 30) brought 22.2 in. of rain to Half Moon Bay State Beach, 89% of the 24.8 in. normal.
Location Details
Half Moon Bay State Beach weather questions
Everything you need to know about weather and visiting Half Moon Bay State Beach
What is the weather like at Half Moon Bay State Beach today?
It's 55°F at Half Moon Bay State Beach right now, with a comfort score of 79 (great). Monday's forecast high at Half Moon Bay State Beach is 56°F, 6°F below the mid November normal of 62°F. The best window today is 9 AM to noon, at about 55°F with a 7 mph wind (comfort 57).
What is the best month to visit Half Moon Bay State Beach?
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Half Moon Bay State Beach are September, October, and August. The best hours are usually 2 PM to 5 PM in September, 1 PM to 4 PM in October, and 1 PM to 4 PM in August. The warm season lasts about 3.8 months, from Jul 3 to Oct 26, when the average high is 67°F or warmer. Highs peak around Sep 8 at about 69°F.
What are the warmest and coldest months at Half Moon Bay State Beach?
September is the warmest month at Half Moon Bay State Beach, with an average high of 69°F. December is the coldest, with an average low of 45°F.
When does the fog burn off at Half Moon Bay State Beach?
Fog or low cloud covers Half Moon Bay State Beach in 68% of 8 AM hours in July, the foggiest month. It often lingers, and 40% of mid-afternoon hours are still foggy. February mornings are the least foggy (12%).
When is it windiest at Half Moon Bay State Beach?
From February through October, wind at Half Moon Bay State Beach typically builds after 11 AM. In April it peaks around 4 PM, averaging 12 mph with 20% of those hours windy, while mornings average 5 mph.
How cold is the ocean at Half Moon Bay State Beach?
The nearest NOAA water-temperature station, Offshore Half Moon Bay (24 nautical miles SSW of San Francisco), last read 67°F.
How much rain does Half Moon Bay State Beach get?
December is the wettest month (5.0 in.), out of about 24.8 in. a year. The rainy season runs from Nov 8 to Apr 7, when a day has at least a 20% chance of measurable rain. That stretch brings 82% of the year's rain. The 2025-26 rain year (Oct. 1 to Sep. 30) brought 22.2 in. of rain to Half Moon Bay State Beach, 89% of the 24.8 in. normal.
How does Half Moon Bay State Beach weather compare with Montara?
Montara, 6 miles away, runs about 4°F cooler than Half Moon Bay State Beach on summer afternoons.
Can I bring my dog to Half Moon Bay State Beach?
Not onto the beach. State Parks prohibits dogs on these beaches at all times. Dogs on a leash no longer than six feet are allowed in the campground, the day-use picnic areas, and on the Coastside Trail.
What kind of place is Half Moon Bay State Beach?
Four miles of sand south of Pillar Point make up Half Moon Bay State Beach, a California State Parks unit. It has four access points, called Francis, Venice, Dunes, and Roosevelt. Each sits about a half mile west of Highway 1 at the end of a city street in Half Moon Bay. Low dunes and the paved Coastside Trail run behind the sand. Francis Beach has the campground and a weekend visitor center, so you can camp a few steps from the beach.
What is Half Moon Bay State Beach weather like in November?
November at Half Moon Bay State Beach averages a high of 62°F and a low of 48°F, with 2.4 in. of rain over about 7 rainy days. About 16% of morning hours are foggy. Afternoon wind averages 7 mph.
More about Half Moon Bay State Beach weather
Guides that explain the weather here and nearby
- Coastal Flood Advisory vs. Warning vs. Watch: What Each Level Means
- Can a Tsunami Hit San Francisco? What History and Maps Show
- Why Is Dungeness Crab Season Delayed in California?
- Whale Watching in the Bay Area: Best Weather and Season Guide
- Sneaker Waves: Why They Kill on Northern California Beaches
- Flood Advisory vs. Flood Warning in the Bay Area: How to Know When to Act
Data sources and methods
- Monthly temperatures and precipitation: NOAA 1991-2020 normals.
- Fog, cloud, wind, sun, and comfort by hour and month: NOAA's HRRR hourly analysis from September 2014 to April 2026.
- Daily records and recent months: NOAA URMA and HRRR analyses, plus NOAA Stage IV precipitation.
- Nearby comparisons and regional rankings use the same hourly HRRR summaries for every destination in the region.
- Alerts: National Weather Service. Tides and ocean temperature: NOAA CO-OPS, where shown.
- All statements on this page are computed from these datasets, apart from the “What shapes the weather” guide, which cites its sources inline.
- California State Parks, Half Moon Bay State Beach (accessed 2026-10-27)
- NOAA National Data Buoy Center, Station 46012 (Half Moon Bay) (accessed 2026-10-27)
Rendered 2026-11-15T12:04:20.910Z.