San Francisco Weather in January
What's the weather like in San Francisco (Córdoba) in January 2025?
The climate in San Francisco during January can be summarized as hot, humid and damp.
January is in the summer in San Francisco and is typically the warmest month of the year. Daytime maximum temperatures average around a muggy 32°C (89°F), whilst at night 18°C (65°F) is normal.
| Daytime temperature | 31.9°C 89.3°F |
|---|---|
| Nightly temperature | 18.2°C 64.7°F |
| Average temperature | 25°C 77°F |
| Daily sunshine | 9.6 hrs |
| Avg rainfall | 107 mm 4.2 ins |
| Rainy days | 9 days |
| Sea temperature | 20.9°C 69.5°F |
| Humidity | 70% |
| Windspeed | 10.1kph 6 mph |
On average January is the 3rd wettest month of the year in San Francisco with around 107mm 4.2 inches of rain making it a damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.6 hours of sunshine per day.
January temperatures in San Francisco
January rainfall
January hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in San Francisco in January 2024.
Other monthly averages
Best places to visit in January
San Francisco weather stats
| Hottest month: | January | 31.5°C 88.7°F |
|---|---|---|
| Driest month: | July | 20mm 0.8ins |
| Sunniest month: | February | 9.3hrs |
| Coldest month: | July | 17.6°C 63.7°F |
| Wettest month: | March | 152mm 6ins |
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