San Francisco Weather in January

January in San Francisco averages 16°C (61°F) during the day and 10°C (50°F) at night. Quite a bit of rainfall is typical this month, with around 62 mm (2.4 in) on average. An umbrella is a good idea.

Rainfall in San Francisco in January

You can expect rain on around 13 days based on historical patterns, with 62 mm (2.4 in) average for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in San Francisco in January

In January, San Francisco sees moderate temperatures, with highs of 16°C (61°F). Nights drop to around 10°C (50°F). January is known for being in the winter season. The difference between afternoon and evening temperatures is usually noticeable. With lows of 10°C (50°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest. Experience the year's lowest temperatures this month, but they are still mild and pleasant.

Sunshine in San Francisco in January

The month brings about 182 hours of sunlight, offering a comfortable mix of sun and overcast.

Wind Speed in San Francisco in January

Wind speeds average 2 m/s (4 knots) during January. At this speed, expect light breezes that you can feel on your face and cause leaves to rustle gently. Since this is an average, some days are calmer with barely any wind while others have more noticeable gentle breezes.

Average water temperature in January

The water is 16°C (61°F) this month — cool enough to feel refreshing on a warm day, but cold enough that most people won't stay in for long without a wetsuit.

January in San Francisco has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

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

San Francisco Temperature in January

Min Temperature 10°C (50°F)  

Max Temperature 16°C (61°F)  

Water Temperature 16°C (61°F) *  

Chance of Rain 44%  

Precipitation 62 mm (2.4 in)  

Rainy days 13 days  

Humidity 71% *  

Windspeed 2 m/s (4 knots) *  

Sunshine 182 hours *  

Percentage Sunshine 60% *  

* Data from: Málaga, Spain (17 KM, 10 Miles).

What to Wear in San Francisco in January

Comfortable temperatures call for an easy wardrobe in January. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. With water temperatures around 16°C (61°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in San Francisco in January

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

Swimming

5/10

Cycling

6/10

Walking

6/10

Barbeque

6/10

Camping

8/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

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

More climate data for San Francisco

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full San Francisco climate overview or explore weather in Spain.