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

Looking to travel to San Francisco in January? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.

In January, San Francisco generally has moderate temperatures and moderate rainfall. Anticipate daytime temperatures around 14°C, while night temperatures can drop to 7°C.

San Francisco in January usually receives moderate rainfall, averaging around 70 mm for the month. Based on our climate data of the past 30 years, about 9 days of rain are anticipated.

The city usually sees around 186 hours of sunlight, indicating a moderately sunny period.

If your ideal day consists of dry skies and moderate temperatures May, June, July, August, September and October generally stand out with the best circumstances. While December tends to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized San Francisco climate page with graphs.

 

San Francisco, monthly averages in January

Min TemperatureMin Temperature 7°C  
Max TemperatureMax Temperature 14°C  
Water TemperatureWater Temperature 12°C  
Chance of RainChance of Rain 30%  
PrecipitationPrecipitation 70 mm  
Rainy daysRainy days 9 days  
HumidityHumidity 80%  
WindspeedWindspeed 11 km/h  
SunshineSunshine 186 hours  
Percentage SunshinePercentage Sunshine 61%  

Where to go in the United States of America in January

Find out more about the weather in the United States of America in January and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in San Francisco in January?

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. Bring a rain jacket in case it rains during your stay. With a water temperature of around 12°C there is no need to bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in January.

Swimming
5/10
Cycling
6/10
Walking
6/10
Camping
4/10
Outdoor sports
9/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in San Francisco.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.