Average annual temperature is 26.1 °C
Absolute maximum temperature: 39.5 °C
Absolute minimum temperature: 12.7 °C
Number of sunny days: 136 days
Number of rainy days: 229 days
Look at detailed online map of San Sai
* Weather data for 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) | 29.5 | 32.1 | 35.6 | 39.2 | 39.5 | 37.1 | 34.5 | 32.5 | 32.7 | 31.6 | 30.8 | 30.8 |
| Average daytime temperature (°C) | 27.8 | 29.7 | 32.6 | 37.2 | 34.2 | 32.0 | 31.4 | 30.2 | 29.9 | 29.4 | 29.3 | 28.8 |
| Average temperature (°C) | 21.9 | 23.7 | 26.5 | 30.6 | 28.8 | 27.4 | 27.2 | 26.5 | 26.2 | 25.6 | 24.6 | 23.7 |
| Average night temperature (°C) | 15.3 | 17.1 | 20.0 | 23.8 | 24.4 | 24.2 | 23.9 | 23.7 | 23.5 | 22.5 | 20.3 | 18.6 |
| Absolute minimum temperature (°C) | 12.7 | 14.6 | 16.9 | 20.4 | 22.3 | 23.1 | 22.9 | 22.8 | 22.6 | 21.2 | 17.0 | 14.4 |
| 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 | 13.2 | 13.1 | 12.8 | 12.2 | 11.7 | 11.3 | 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) | 10.3 | 10.5 | 10.5 | 11.1 | 10.9 | 9.6 | 10.3 | 8.1 | 8.7 | 9.7 | 10.1 | 10.1 |
| Precipitation (mm) | 0 | 63 | 17 | 5 | 140 | 304 | 358 | 409 | 595 | 237 | 42 | 24 |
| Sunny days | 30 | 20 | 22 | 22 | 2 | 2 | 2 | 1 | 1 | 1 | 14 | 19 |
| Rainy days | 1 | 8 | 9 | 8 | 29 | 28 | 29 | 30 | 29 | 30 | 16 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Sai is at