San Francisco Weather in January

What's the weather like in San Francisco (California) in January 2022?

The climate in San Francisco during January can be summarized as mild and wet.

January is in the winter in San Francisco and is typically the coldest month of the year. Daytime maximum temperatures average around a cool 13°C (56°F), whilst at night 7°C (44°F) is normal.

San Francisco weather averages (imperial / metric)
Daytime temperature 13.4°C 56.1°F
Nightly temperature 6.6°C 43.9°F
Average temperature 10°C 50°F
Daily sunshine 6.4 hrs
Avg rainfall 125 mm 4.9 ins
Rainy days 10 days
Sea temperature 12.4°C 54.2°F
Humidity 79%
Windspeed 12.2kph 8 mph

On average January is the wettest month of the year in San Francisco with around 125mm 4.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.4 hours of sunshine per day.

January temperatures in San Francisco

San Francisco average temperature in January

January rainfall

San Francisco average rain in January

January hourly sunshine

San Francisco average rain in January

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 2022.

Other monthly averages

Best places to visit in January

UV index Best time to go?

San Francisco weather stats

San Francisco weather statistics
Hottest month: September 21.4°C 70.5°F
Driest month: July 1mm 0ins
Sunniest month: April 11hrs
Coldest month: January 13.2°C 55.8°F
Wettest month: January 125mm 4.9ins
Map showing location of San Francisco (37.77493, -122.41942)

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