Average annual temperature is 15.1 °C
Absolute maximum temperature: 37.9 °C
Absolute minimum temperature: 0.2 °C
Number of sunny days: 257 days
Number of rainy days: 108 days
Look at detailed online map of San Tomas
* Weather data for San Tomas 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) | 18.3 | 17.6 | 20.8 | 30.2 | 28.9 | 32.6 | 37.9 | 35.1 | 31.2 | 35.3 | 25.9 | 19.6 |
| Average daytime temperature (°C) | 13.7 | 13.6 | 14.1 | 19.5 | 22.3 | 26.4 | 31.2 | 31.4 | 27.4 | 26.2 | 19.8 | 15.8 |
| Average temperature (°C) | 9.5 | 8.4 | 9.3 | 12.5 | 15.2 | 18.0 | 21.8 | 22.3 | 19.4 | 18.4 | 13.8 | 11.5 |
| Average night temperature (°C) | 6.4 | 4.1 | 5.5 | 7.3 | 10.0 | 12.0 | 14.8 | 15.9 | 13.7 | 12.8 | 9.0 | 7.8 |
| Absolute minimum temperature (°C) | 1.7 | 0.2 | 1.3 | 1.4 | 5.6 | 8.3 | 11.8 | 12.7 | 10.0 | 5.7 | 2.8 | 3.9 |
| 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 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| 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) | 5.9 | 7.7 | 7.1 | 11.1 | 11.0 | 12.8 | 13.3 | 12.3 | 10.9 | 9.8 | 8.1 | 6.0 |
| Precipitation (mm) | 286 | 103 | 232 | 2 | 36 | 0 | 0 | 1 | 3 | 3 | 64 | 139 |
| Sunny days | 12 | 13 | 9 | 23 | 23 | 30 | 31 | 29 | 25 | 26 | 20 | 16 |
| Rainy days | 19 | 15 | 22 | 7 | 8 | 0 | 0 | 2 | 5 | 5 | 10 | 15 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit San Tomas during the most sunny months:
The largest precipitation sum in San Tomas is at