Average annual temperature is 6.2 °C
Absolute maximum temperature: 33.0 °C
Absolute minimum temperature: -25.6 °C
Number of sunny days: 206 days
Number of rainy days: 109 days
Number of snow days: 50 days
Look at detailed online map of San Antonio
* Weather data for San Antonio United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 5.9 | 5.7 | 8.0 | 19.0 | 22.2 | 27.2 | 33.0 | 29.3 | 27.8 | 21.7 | 16.1 | 7.5 |
| Average daytime temperature (°C) | -1.2 | 0.2 | 2.9 | 11.9 | 18.5 | 22.7 | 29.5 | 26.4 | 22.0 | 16.8 | 8.9 | 0.5 |
| Average temperature (°C) | -6.9 | -6.4 | -2.5 | 3.6 | 10.8 | 15.0 | 21.3 | 18.7 | 14.2 | 9.0 | 1.7 | -5.3 |
| Average night temperature (°C) | -12.2 | -11.8 | -7.1 | -3.1 | 3.5 | 6.8 | 11.7 | 10.9 | 6.8 | 2.3 | -3.6 | -9.9 |
| Absolute minimum temperature (°C) | -24.7 | -25.6 | -20.9 | -12.3 | -0.6 | 0.7 | 7.3 | 7.5 | 1.2 | -6.6 | -10.3 | -21.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.1 | 14.1 | 14.7 | 14.4 | 13.5 | 12.4 | 11.2 | 10.2 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.7 | 8.5 | 9.3 | 11.8 | 12.2 | 13.3 | 13.3 | 12.0 | 11.1 | 10.2 | 8.6 | 7.7 |
| Precipitation (mm) | 32 | 34 | 56 | 9 | 52 | 26 | 7 | 30 | 55 | 5 | 7 | 14 |
| Sunny days | 18 | 16 | 10 | 18 | 12 | 12 | 18 | 17 | 18 | 23 | 22 | 22 |
| Rainy days | 2 | 1 | 6 | 7 | 19 | 18 | 13 | 14 | 12 | 8 | 4 | 5 |
| Snow days | 11 | 11 | 15 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 4 |
The best time to visit San Antonio during the most sunny months:
The largest precipitation sum in San Antonio is at