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Best time to visit · California, United States
May – October are the best time to visit San Francisco on the climate data: June scores 95/100, with highs around 71°F (22°C) and 0.2 in (6 mm) of rain. March & April and November are good shoulder-season months. The toughest months are December & January, mainly because of cloud cover.
These averages also cover Lands End & Ocean Beach and The Embarcadero & Ferry Building.
Highs run from 56°F to 74°F across the year, and the yearly total is about 23.0 in (585 mm) of rain.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 56°F13°C | 58°F15°C | 61°F16°C | 63°F17°C | 66°F19°C | 71°F22°C | 73°F23°C | 73°F23°C | 74°F24°C | 71°F22°C | 63°F17°C | 56°F14°C |
| Avg low | 43°F6°C | 45°F7°C | 46°F8°C | 47°F8°C | 50°F10°C | 52°F11°C | 54°F12°C | 55°F13°C | 55°F13°C | 52°F11°C | 47°F9°C | 44°F7°C |
| Rain | 3.9 in100 mm | 4.0 in102 mm | 3.2 in82 mm | 1.7 in42 mm | 0.7 in18 mm | 0.2 in6 mm | 0.0 in1 mm | 0.0 in1 mm | 0.2 in4 mm | 1.1 in29 mm | 2.4 in62 mm | 5.4 in138 mm |
| Humidity | 84% | 82% | 82% | 80% | 78% | 74% | 74% | 74% | 70% | 69% | 76% | 82% |
| Cloud | 58% | 58% | 58% | 53% | 51% | 44% | 56% | 57% | 46% | 44% | 50% | 59% |
| Comfort | 70 | 73 | 79 | 89 | 93 | 95 | 91 | 91 | 95 | 95 | 88 | 65 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. The grid cell sits at about 87 m (285 ft), close to San Francisco's own ~17 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The coldest season, with highs of 56–58°F (13–15°C) and lows down to 43°F (6°C). It's the wettest season, with about 13.4 in (340 mm) of rain, 58% of the year's total. It holds the toughest stretch on our comfort score (December & January), averaging 69/100.
Temperatures climb through the season, from 61°F highs in March to 66°F by May. About 5.6 in (142 mm) of rain falls across these months, 24% of the year's total. Lows bottom out around 46°F (8°C). Comfort peaks here: May ranks with the year's best, and the season averages 87/100.
Expect steady highs of 71–73°F (22–23°C). It's the driest season, with only about 0.3 in (8 mm) of rain, 1% of the year's total. Lows bottom out around 52°F (11°C). June – August are among the best-scoring months (season average 92/100).
The warmest stretch of the year, with highs of 63–74°F (17–24°C). About 3.7 in (95 mm) of rain falls across these months, 16% of the year's total. Lows bottom out around 47°F (9°C). Comfort peaks here: September & October rank with the year's best, and the season averages 93/100.
By comfort score: 9 Great and 3 Good. Great months: March – November. Tap a month for its own guide.
May – October are the best time to visit San Francisco on the climate data: June scores 95/100, with highs around 71°F (22°C) and 0.2 in (6 mm) of rain. March & April and November are good shoulder-season months. The toughest months are December & January, mainly because of cloud cover.
December is the wettest month, averaging about 5.4 in (138 mm) of rain. July is the driest, with less than 0.1 in (3 mm). The yearly total is around 23.0 in (585 mm).
January is the coldest, with average lows of 43°F (6°C) and highs of 56°F (13°C). The warmest is September, with average highs of 74°F (24°C).
Not very: summer (June – August) humidity averages 74%, and highs peak around 73°F (23°C), so it rarely feels sticky.
The wettest three-month stretch is December – February, with about 13.4 in (340 mm) of rain combined. The driest stretch is July – September, with about 0.2 in (6 mm).
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