San Francisco · WinterMonth summary
San Francisco weather in December
⚠️ Fair
🌡️ Temperature min / max
8°C – 13°C
🌧 Rainy days
32% of days
☀️ Sunshine
8.0h per day on average
🌊 🌊 Season
Winter
⭐ ⭐ Weather score
5.3/10
📅 📅 Best month
June (8.0/10)
Quick decision
Should you visit San Francisco in December?
⚠️ Fair
✅ Yes if: you enjoy winter atmosphere and the lowest prices of the year.
❌ No if: you're looking for sunshine or outdoor activities.
Our take: December is an average time for San Francisco. June (8.0/10) is clearly preferable.
By trip type
San Francisco in December by trip type
- 🏙️ 🏙️ City break / culture : ⚠️ Possible
- 🚶 🚶 Outdoor activities : ❌ Not recommended
- 🏖️ Beach / swimming : ❌ Not recommended
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in December
🎯 Quiet season in the vineyards — intimate tastings and reduced prices In December, San Francisco sees 13°C during the day with 8.0h of sunshine per day. Expect rain on 32% of days — a light raincoat in the bag is recommended.
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Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 8°C | 14°C | 34% | 4.1 | 8.0h | 5.4/10 |
| ⛅ February | 8°C | 14°C | 29% | 3.4 | 9.4h | 6.4/10 |
| ⛅ March | 9°C | 14°C | 36% | 3.3 | 10.6h | 6.4/10 |
| ⛅ April | 10°C | 15°C | 15% | 1.1 | 11.9h | 7.2/10 |
| ⛅ May | 11°C | 16°C | 8% | 0.6 | 12.9h | 7.5/10 |
| 🌤️ June | 12°C | 18°C | 1% | 0.0 | 13.7h | 8.0/10 |
| 🌤️ July | 13°C | 18°C | 0% | 0.0 | 13.0h | 7.9/10 |
| 🌤️ August | 14°C | 19°C | 1% | 0.0 | 12.1h | 8.0/10 |
| 🌤️ September | 14°C | 20°C | 4% | 0.1 | 11.3h | 8.0/10 |
| 🌤️ October | 13°C | 19°C | 10% | 1.0 | 9.9h | 7.6/10 |
| ⛅ November | 10°C | 16°C | 23% | 2.1 | 8.8h | 7.0/10 |
| ⛅ December | 8°C | 13°C | 32% | 4.3 | 8.0h | 5.3/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In December, San Francisco averages 13°C, 32% rainy days and 8.0h of sunshine per day. Overall weather score: 5.3/10.
See methodology →
Comparison
December vs June (best month)
The best month is June (score 8.0/10). Difference:
- 🌡️ Max temperature : +5°C
- 🌧 Rainy days : -31%
- ☀️ Sunshine : +5.7h/day
FAQ
FAQ — San Francisco in December
Is December a good time to visit San Francisco?
December is not recommended for San Francisco (score 5.3/10). With 32% rainy days and 8.0h of sunshine, consider June (8.0/10) instead.
What's the weather like in San Francisco in December?
It's cool with 13°C daytime and 8°C at night. 8.0h of sunshine per day. Pack warm clothes and favour indoor visits.
Accommodation
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Activities & tours
Activities and tours in San Francisco
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