Which Bay Area beach is warm and clear?

Each day is scored for the afternoon, 11 AM to 5 PM. Warmth counts for half the score: the best beach days reach the high 70s to about 90, and below about 64 even a sunny, calm afternoon scores fair at best. Sun and wind count for a quarter each; an average wind over about 15 mph blows sand around.

Each hour of fog takes 8% off, up to 40%. A 35% chance of rain takes a quarter off, and steady rain over half.

The score rates the air, not the water. Pacific water along this coast stays cool all year.

Sources: hourly forecast from Open-Meteo, updated hourly. Fog from forecast visibility and fog weather codes.