Average annual temperature is 26.1 °C
Absolute maximum temperature: 40.4 °C
Absolute minimum temperature: 12.1 °C
Number of sunny days: 131 days
Number of rainy days: 234 days
Look at detailed online map of Amphoe San Sai
* Weather data for Amphoe San Sai Thailand is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 30.1 | 33.0 | 36.4 | 40.4 | 39.7 | 36.5 | 35.2 | 33.1 | 33.0 | 32.3 | 31.5 | 31.7 |
| Average daytime temperature (°C) | 28.3 | 30.2 | 33.2 | 37.7 | 34.4 | 31.9 | 31.6 | 30.3 | 30.1 | 29.8 | 29.9 | 29.5 |
| Average temperature (°C) | 21.9 | 23.9 | 26.7 | 30.9 | 28.9 | 27.3 | 27.3 | 26.4 | 26.2 | 25.7 | 24.6 | 23.8 |
| Average night temperature (°C) | 15.1 | 17.2 | 20.3 | 24.2 | 24.6 | 24.3 | 24.0 | 23.6 | 23.4 | 22.5 | 19.8 | 18.3 |
| Absolute minimum temperature (°C) | 12.1 | 15.2 | 16.7 | 21.5 | 22.5 | 23.1 | 23.1 | 22.7 | 22.6 | 21.1 | 16.4 | 13.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.1 | 11.5 | 12.0 | 12.6 | 13.0 | 13.3 | 13.1 | 12.8 | 12.2 | 11.7 | 11.2 | 11.0 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 10.0 |
| Sunshine mean duration (h) | 10.2 | 10.5 | 10.5 | 11.1 | 10.9 | 9.5 | 10.3 | 8.0 | 8.6 | 9.7 | 10.1 | 10.1 |
| Precipitation (mm) | 0 | 63 | 11 | 14 | 138 | 372 | 326 | 352 | 557 | 251 | 55 | 32 |
| Sunny days | 29 | 21 | 25 | 22 | 4 | 0 | 0 | 0 | 1 | 0 | 14 | 15 |
| Rainy days | 2 | 7 | 6 | 8 | 27 | 30 | 31 | 31 | 29 | 31 | 16 | 16 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Amphoe San Sai is at