San Francisco Weather in January
What's the weather like in San Francisco (Petén) in January 2024?
The climate in San Francisco during January can be summarized as warm, humid and a little damp.
January is in the winter in San Francisco and is typically the coldest month of the year. Daytime maximum temperatures average around a muggy 27°C (81°F), whilst at night 17°C (63°F) is normal.
| Daytime temperature | 27°C 80.5°F |
|---|---|
| Nightly temperature | 17.3°C 63.1°F |
| Average temperature | 22.1°C 71.8°F |
| Daily sunshine | 7.1 hrs |
| Avg rainfall | 88 mm 3.5 ins |
| Rainy days | 11 days |
| Sea temperature | 27°C 80.7°F |
| Humidity | 71% |
| Windspeed | 11.2kph 7 mph |
On average January is the 4th driest month of the year in San Francisco with around 88mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.1 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: | May | 32.4°C 90.3°F |
|---|---|---|
| Driest month: | April | 48mm 1.9ins |
| Sunniest month: | March | 8.1hrs |
| Coldest month: | January | 26.7°C 80.1°F |
| Wettest month: | September | 286mm 11.3ins |
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