Experience the mild Mediterranean climate of San Francisco, where temperatures typically range from 48°F to 63°F during the best visiting season, late spring to early fall. Known as the 'foggiest' city in America, an iconic marine layer often blankets the city, adding a unique charm. For an unforgettable experience, explore the Golden Gate Park under the ethereal foggy mornings, then warm up with a cup of local coffee at one of the vibrant cafes.
Today's Forecast
5-Day Forecast
San Francisco Climate & Weather Averages
San Francisco records its highest temperatures in September — typically 70°F by day — and its lowest in December, around 56°F. Most rain falls in December; August stays driest. These averages are computed from ten years of daily records (2015–2024).
The weather in San Francisco moves in moderate steps rather than leaps. Between the 70°F warmth of September and the 56°F chill of December lie long, mild shoulder seasons that many consider the best time to be here. Showers can turn up in any month — December most of all — so a light rain layer earns its place year-round.
| Month | Avg High | Avg Low | Rainfall | Sunshine (h/day) | Wind (mph) |
|---|---|---|---|---|---|
| Jan | 57° | 46° | 4.9 in | 7 | 13 |
| Feb | 59° | 46° | 3.5 in | 8.9 | 15 |
| Mar | 59° | 48° | 3.7 in | 9.4 | 16 |
| Apr | 61° | 50° | 1.3 in | 11.4 | 17 |
| May | 63° | 52° | 0.7 in | 12.7 | 18 |
| Jun | 67° | 55° | 0.1 in | 13.3 | 18 |
| Jul | 67° | 56° | 0 in | 13.1 | 17 |
| Aug | 68° | 58° | 0 in | 12.3 | 17 |
| Sep | 70° | 58° | 0.1 in | 11.4 | 16 |
| Oct | 69° | 55° | 1.1 in | 9.8 | 14 |
| Nov | 62° | 50° | 2.3 in | 8.5 | 12 |
| Dec | 56° | 46° | 5.1 in | 6.7 | 13 |
Expect around 13.3 hours of sun a day at the June peak, against about 6.7 hours in December. Wind stays moderate most of the year, strongest in June with daily peaks near 18 mph.
Best time to visit: Aim for June–August if you can: highs hover near 67°F and rain is lighter than the December peak. Light, breathable layers plus a light waterproof cover most days here.
San Francisco weather — frequently asked questions
What is the rainiest month in San Francisco?
December is on average the wettest month in San Francisco, with about 5.1 in of rainfall. The driest month is typically August, at around 0 in.
What is the sunniest month in San Francisco?
June, with roughly 13.3 hours of sunshine a day on average over 2015–2024. The dimmest month is December, at about 6.7 hours.
When is the best time to visit San Francisco?
Weather-wise, June–August is the sweet spot in San Francisco: average daytime highs around 67°F with less rain than the December peak. Data from 2015–2024.
Source: Open-Meteo ERA5 archive. Averages computed from daily records.