December · United States
Best time to visit San Francisco in December Weather, crowds & prices
Weather in San Francisco in December
Average temperature 10°C, 159 mm of rain, about 0 days with 6+ hours of sunshine and 87% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
4.1/10
Ranked #12 of 12 months
- Avg temp
- 10°C
- Rainfall
- 159 mm
- Humidity
- 87%
- Days with 6h+ sun
- 0
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
December in San Francisco scores 4.1/10 for sightseeing and cultural travel - ranked #12 of 12. Expect around 10°C, 159 mm of rain, and roughly 0 days with 6+ hours of sunshine this month.
Fog-kissed hills, bridges, and bay walks at their most pleasant from April through June.
December in San Francisco: expect compromises
Expect 10°C (51°F) in December. A good month for city streets, viewpoints and long meals; leave swimming for another season.
159 mm of rain signals a properly wet month, with only almost no days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 4.1/10 on the same scale — 12th of 12 months, versus 9.8/10 for the best month here.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.
Expect low-season pricing, and crowds are light for this destination.
If your dates are flexible, July is materially better in San Francisco — 5.7 points higher on the same scale.
Frequently asked
- What is the weather like in San Francisco in December?
- In December, San Francisco averages 10°C, 159 mm of rain, and about 0 days with 6+ hours of sunshine. Its climate-comfort score is 4.1/10.
- Is December a good time to visit San Francisco?
- December earns a 4.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in San Francisco in December?
- Expect about 159 mm of rain in December. Average humidity is 87% and there are about 0 days with 6+ hours of sunshine.
Curated in San Francisco
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San Francisco, United States. Live activities and tours from GetYourGuide, matched to this destination.