Average annual temperature is 12.2 °C
Absolute maximum temperature: 34.2 °C
Absolute minimum temperature: -12.5 °C
Number of sunny days: 172 days
Number of rainy days: 180 days
Number of snow days: 13 days
Look at detailed online map of Galveston
* Weather data for Galveston 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) | 17.3 | 18.4 | 19.0 | 26.5 | 30.8 | 32.3 | 34.2 | 33.9 | 32.4 | 29.7 | 23.6 | 15.2 |
| Average daytime temperature (°C) | 5.0 | 9.3 | 9.6 | 17.4 | 23.0 | 27.3 | 28.5 | 27.1 | 25.3 | 18.5 | 11.3 | 8.0 |
| Average temperature (°C) | 1.6 | 3.0 | 4.0 | 10.9 | 16.8 | 21.0 | 23.1 | 22.1 | 19.7 | 13.5 | 6.0 | 4.2 |
| Average night temperature (°C) | -1.1 | -1.3 | -0.3 | 5.3 | 11.0 | 15.4 | 18.1 | 17.3 | 14.8 | 9.5 | 1.8 | 1.3 |
| Absolute minimum temperature (°C) | -11.1 | -12.5 | -8.3 | -2.3 | 1.2 | 9.2 | 13.4 | 11.5 | 8.7 | -3.5 | -9.8 | -7.3 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| 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) | 3.3 | 7.5 | 6.5 | 8.9 | 10.3 | 11.2 | 12.3 | 10.7 | 9.6 | 7.2 | 7.5 | 4.2 |
| Precipitation (mm) | 83 | 90 | 162 | 83 | 67 | 54 | 128 | 132 | 42 | 87 | 23 | 55 |
| Sunny days | 9 | 17 | 12 | 17 | 18 | 17 | 8 | 13 | 16 | 12 | 21 | 12 |
| Rainy days | 16 | 10 | 15 | 13 | 13 | 13 | 23 | 18 | 14 | 18 | 9 | 18 |
| Snow days | 6 | 1 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
The best time to visit Galveston during the most sunny months:
The largest precipitation sum in Galveston is at