Weather in San Antonio in December
San Antonio, United States averages a high of 18°C (64.4°F) and low of 8°C (46.4°F) in December, with 7 rain days and 6.8 hours of daily sunshine. Travel score: 71.4/100 (Good). The best time to visit San Antonio is September.
High
18°C64°F
Low
8°C46°F
🌧️
7
rain days
☀️
6.8
hrs/day sunshine
💧
68%
humidity
71— Good
December in San Antonio is mild and mostly dry — good for most activities.
What are the average temperatures in San Antonio?
How much does it rain in San Antonio in December?
San Antonio receives an average of 50.3mm of rainfall across 7 rainy days in December. The annual total is 832.6mm.
What should I pack for San Antonio in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 18°C
Recommended
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
🎉Visiting United States 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