Weather in San Francisco in December
San Francisco, Costa Rica averages a high of 23.5°C (74.3°F) and low of 17°C (62.6°F) in December, with 10 rain days and 9.6 hours of daily sunshine. Travel score: 79.2/100 (Good). The best time to visit San Francisco is February.
High
24°C74°F
Low
17°C63°F
🌧️
10
rain days
☀️
9.6
hrs/day sunshine
💧
84%
humidity
79— Good
December in San Francisco is warm and occasionally wet — good for most activities.
What are the average temperatures in San Francisco?
How much does it rain in San Francisco in December?
San Francisco receives an average of 73.8mm of rainfall across 10 rainy days in December. The annual total is 2555.2mm.
What should I pack for San Francisco in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 24°C
🧴
Sunscreen SPF 30+
10 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (10 days)
☔
Umbrella
Be prepared for occasional showers
🎉Visiting Costa Rica in December?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31