Jack London Square Weather

April is the standout month at Jack London Square. The historical data shows April averaging highs of 72 degrees with a comfort score of 90 out of 100, 12.8 hours of sunshine per day, and minimal fog at just 1.1 hours in the morning. That combination is rare in the Bay Area. You get long, bright days without the persistent afternoon fog that arrives in June and July, and temperatures warm enough to sit outside comfortably at the waterfront restaurants without a heavy jacket. May runs a close second, with nearly 13 hours of sun and zero measurable rainfall in 2025. The spring window from late March through May tends to deliver the most reliably pleasant days, before the marine layer deepens as summer progresses. If you are planning a trip specifically around outdoor waterfront dining and comfortable walking, April is the time to go. For a broader view of how the East Bay fits into seasonal Bay Area weather patterns, Bay Area four seasons is worth reading.

Summer at Jack London Square is warm but rarely hot. The waterfront location keeps temperatures moderate, with average highs running in the mid to upper 70s from June through August. August 2024 was the warmest recent month on record, averaging a high of 78 degrees. Compare that to inland East Bay neighborhoods where summer afternoons routinely hit 90 or above, and you see why the waterfront draws crowds. The water has a genuine cooling effect here. That said, you will notice more morning fog in summer than in spring. June 2025 saw 3.6 hours of morning fog per day on average, which means some mornings start cool and gray before burning off by midday. Afternoons are typically the best window for outdoor activity. The comfort scores bear this out: June through August all sit between 84 and 89 out of 100, which is genuinely excellent. This is not a place where you need to worry about heat. It is closer to a place where you appreciate that you are not somewhere hotter, like Walnut Creek or Livermore on a July afternoon.

Jack London Square gets morning fog, but less of it than you might expect for a waterfront location in the Bay Area. Across the 18-month observation period, average morning fog runs about 2.2 hours per day. That is meaningfully less than neighborhoods along the San Francisco waterfront or areas closer to the Golden Gate where marine air pours in most directly. Being on the eastern shore of the bay puts Jack London Square in a more sheltered position. Fog typically burns off by mid-morning, and afternoons are often clear. The foggiest months in the recent data are June 2025 at 3.6 hours and October 2025 at 3.2 hours. The least foggy period is spring: April 2025 averaged just 1.1 hours of morning fog per day. If morning fog is something you want to understand more deeply, why morning fog forms in the Bay Area gives a good explanation of the mechanics. The practical upshot for visitors is: arrive after 10 a.m. and you will usually find clear skies, even in summer.

Outdoor dining at Jack London Square works well for a longer portion of the year than you might expect. The waterfront restaurants have fire pits and heaters for a reason, but from April through October the weather is generally cooperative without any assist. April through September is the strongest stretch, with comfort scores ranging from 84 to 90 and average highs between 70 and 79 degrees. The waterfront does catch more breeze than the inland streets of Oakland, so a light layer is almost always a good idea in the evening, even in July. Winter outdoor dining is a different story. November through January brings the rainy season, with November and January both averaging over 5 inches of rain in the data. December 2024 was a pleasant exception at only 0.85 inches, but that is not the norm. If you are planning a dinner reservation outdoors from November through February, check the forecast. The rest of the year, particularly the long spring and summer, is well-suited to eating outside along the water. Alameda nearby has a similar waterfront character if you want to compare options.

The rainy season at Jack London Square runs roughly from October through February, with November and January being the wettest months. In the 18-month data set, November 2024 saw 6.01 inches of rain and January 2025 saw 6.58 inches. October marks the transition, dropping from the near-zero rainfall of summer into increasingly wet conditions. March starts the pattern in reverse, with measurable but modest rainfall and improving sunshine hours. The waterfront setting does not offer much tree cover or shelter during rain, so a wet day at Jack London Square is genuinely wet. That said, about 250 days per year qualify as what the data calls perfect days, which suggests the rainy season, while real, is not relentlessly long. The Bay Area has a Mediterranean climate, meaning summers are reliably dry and winters are wet but not bitter cold. For more context on what the wettest months look like across the region, the rainiest month in the Bay Area is a useful reference.

Winters at Jack London Square are cool but mild by any objective standard. The coldest months in the data are November through January, with average lows dropping to the mid 40s and average highs staying in the upper 50s to low 60s. December 2025 averaged a high of 57.7 degrees and a low of 46.3. Frost is extremely rare at this elevation and location. You are not going to need a heavy parka, but you will want a real jacket, particularly at the waterfront where wind off the water adds a noticeable chill in the evenings. Comfort scores in winter dip into the 67 to 78 range, which reflects the rain and shorter days more than extreme cold. Sunshine averages about 6 to 7 hours per day in November and December, compared to nearly 13 hours in May. The silver lining is that winter crowds thin out, the restaurants are quieter, and on clear winter days, the views across the estuary to the Bay Bridge and San Francisco skyline are crisp and striking. If you dress for it, winter visits are perfectly enjoyable.

Layers are the right answer at any time of year. The waterfront location means temperatures can shift noticeably between a sunny afternoon and an evening by the water, and the Bay breeze adds to that variability. In summer, a t-shirt works for most of the day but bring a light fleece or denim jacket for evenings. Morning visits in June and July may start foggy and cool, around 55 to 57 degrees at the low, before warming up by noon. In spring and fall, a medium-weight jacket is the practical choice for most of the day. In winter, add a waterproof outer layer since this is the rainy season. Comfortable walking shoes are worth thinking about because the Square and its surrounding blocks involve a fair amount of pavement, and the waterfront boardwalk can be slippery when wet. Sunscreen is appropriate from April through September when sunshine averages 10 to 13 hours per day. Dressing in layers for Bay Area weather covers this pattern well across the region. The East Bay microclimate tends to run a few degrees warmer than San Francisco, so if you are coming from the city, you can usually subtract a layer.

Jack London Square sits in a favorable microclimate position within Oakland. Being at sea level on the eastern shore of the bay, it avoids the coolest and foggiest patterns that affect San Francisco and the coast, while also staying cooler than inland neighborhoods during summer heat events. Compared to Temescal, a couple miles inland, Jack London Square tends to run a bit cooler on hot days and catch more morning marine influence. Compared to the Berkeley Hills, which create their own weather divide between the coast and inland valleys, the Square sits on the warmer, sunnier bay side. Lake Merritt a mile away has a similar temperature profile but slightly more shelter from wind. The overall comfort score of 82 out of 100 across 18 months puts Jack London Square solidly in the comfortable range for the Bay Area, and the low elevation means it stays above fog inversion layers that sometimes trap cool air in lower-lying spots. For a deeper look at how geography shapes these differences, why the Bay Area has so many microclimates explains the underlying dynamics well.

Yes, the waterfront location at Jack London Square means wind is a regular presence, particularly in the afternoons. The Bay Area's daily wind pattern is driven by thermal differences between the hot Central Valley and the cooler coast, which pulls marine air inland through gaps in the coastal hills. Jack London Square, sitting directly on the estuary with no barriers to the west, catches this afternoon flow regularly. Summer afternoons tend to be the windiest, when the Central Valley heating is strongest and air moves most forcefully through the bay. This wind is one reason summer highs here stay moderate even when inland areas are baking. The practical effect for visitors is that a jacket becomes more useful in the afternoon rather than the morning, which is the reverse of the fog pattern. Evenings can also be breezy, making outdoor waterfront seating feel cooler than the thermometer suggests. The good news is the wind typically drops after sunset. If you want to understand what drives all this, why the Bay Area has so much wind gives a thorough breakdown of the mechanics.

Jack London Square averages about 9.5 hours of sunshine per day across the full year, and the historical data counts roughly 250 days per year as perfect or near-perfect weather days. Sunshine hours peak sharply in the spring and early summer: May 2025 averaged 12.9 hours per day and April 2025 averaged 12.8 hours, both close to the maximum possible for the latitude. Summer sunshine is high in raw hours but the morning fog in June and July eats into the early part of the day. Winter brings the sharpest drop, with November and December averaging around 6 to 6.3 hours of sunshine. The low point in the data is November 2024 and November 2025, which are nearly identical at just above 6 hours per day with significant rainfall. The flip side is that even in winter, most days are partly to mostly sunny. The Bay Area's Mediterranean climate means prolonged stretches of overcast gray skies are uncommon outside of active storm systems. Downtown Oakland shares a nearly identical sunshine pattern given how close the two areas are, but the waterfront view makes those sunny hours feel particularly good at Jack London Square.