World Weather & Climate Information

Average weather January in San Francisco (California), United States of America

The average minimum temperature (usually the minimum temperature is noted during the night) in San Francisco in January is 7.0°C (44.6°F). The amount of rain in January is high with an average of 111mm (4.4in). The average maximum temperature lies around 14.0°C (57.2°F). With a water temperature of around 12.0°C (53.6°F), this is not the best month to swim. You will see the sun sometimes in this month, it has 185 hours of sun.

So what to wear in January? Visitors traveling to San Francisco should plan on bringing a totally waterproof rain jacket since it will be raining some days. Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly.

Do these climate conditions match with when you want to go to San Francisco? Find out where to stay here.

For other monthly weather averages and what to do in January look at the numbers below.

Monthly averages

°C
Min Temperature 7.0°C
Max Temperature 14.0°C
Water Temperature 12.0°C
Chance of Rain 40.0%
Precipitation 111mm
Rainy Days 12
Windspeed 10.8kmph
Humidity 80%
Sunshine Hours 185
Percentage Sunshine 61%

What to Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in January.
Swimming
5/10
Cycling
5/10
Walking
5/10
Camping
3/10
Outdoor sports
9/10

More climate information for San Francisco

Weather and Climate offers all the information you need to know about the climate in San Francisco.

We collected past weather data from many thousand weather stations around the world. So find on this website the historical weather averages in other cities in United States of America and climate and forecast data for all other countries in the world.

Cheapest month to fly to San Francisco

Where to stay in San Francisco

Booking.com