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San Francisco Weather in January

January in San Francisco averages 26°C (79°F) during the day and 21°C (70°F) at night. The excellent conditions and low rainfall make it a solid month to visit.

Rainfall in San Francisco in January

Typically around a single day of rainfall are expected, averaging 28 mm (1.1 in) for the month. On the rare occasion it does rain, the shower can be quite heavy given the low total spread across a single day.

Temperature in San Francisco in January

The temperature in San Francisco in January is excellent. Daytime highs reach 26°C (79°F), with nights dropping to 21°C (70°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 21°C (70°F), the nights are warm and generally comfortable.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit Mexico, check out our San Francisco's climate page.

San Francisco Temperature in January

Min TemperatureMin Temperature 21°C (70°F)  
Max TemperatureMax Temperature 26°C (79°F)  
Chance of RainChance of Rain 5%  
PrecipitationPrecipitation 28 mm (1.1 in)  
Rainy daysRainy days a single day  
HumidityHumidity 67% *  
* Data from: Puerto Vallarta, Mexico (37 KM, 23 Miles).

Best Places in Mexico in January

Find out more about the weather in Mexico and which places have the best travel conditions in this month. See all of Mexico in January →

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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 (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in San Francisco in January

Warm weather calls for comfortable, breathable clothing in January. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Some rain is possible, so pack something to handle light showers.

What To Do in San Francisco in January

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

Cycling
8/10
Walking
8/10
Camping
10/10
Outdoor sports
8/10

Select a Month

Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit Mexico, check out our San Francisco's climate page.

More climate data for San Francisco