San Francisco Weather in December

San Francisco in December sees moderate temperatures, with highs around 17°C (63°F) and overnight lows of 11°C (52°F). Rainfall is at its peak this month, around 74 mm (2.9 in) on average, so waterproofs are essential.

Rainfall in San Francisco in December

This month is known for heavy rainfall, so don't forget your umbrella to stay dry. Typically around 13 days of rainfall are expected, averaging 74 mm (2.9 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in San Francisco in December

December in San Francisco brings moderate temperatures, with highs of 17°C (63°F) and nights around 11°C (52°F). December is a notable month of the winter season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With lows of 11°C (52°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.

Sunshine in San Francisco in December

The month brings about 164 hours of sunlight, offering a comfortable mix of sun and overcast.

Wind Speed in San Francisco in December

Wind speeds average 2 m/s (4 knots) during December. 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 December

At 17°C (63°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.

December 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 December

Min Temperature 11°C (52°F)  

Max Temperature 17°C (63°F)  

Water Temperature 17°C (63°F) *  

Chance of Rain 43%  

Precipitation 74 mm (2.9 in)  

Rainy days 13 days  

Humidity 72% *  

Windspeed 2 m/s (4 knots) *  

Sunshine 164 hours *  

Percentage Sunshine 57% *  

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

What to Wear in San Francisco in December

Pleasant temperatures in December mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. With water temperatures around 17°C (63°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in San Francisco in December

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

Swimming

6/10

Cycling

6/10

Walking

6/10

Barbeque

6/10

Camping

8/10

Outdoor sports

9/10

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.