Average annual temperature is 27.0 °C
Absolute maximum temperature: 38.8 °C
Absolute minimum temperature: 12.8 °C
Number of sunny days: 148 days
Number of rainy days: 217 days
Look at detailed online map of Ban Nam Sai
* Weather data for Ban Nam 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) | 31.7 | 35.6 | 36.7 | 38.6 | 38.8 | 35.0 | 35.1 | 33.7 | 32.4 | 32.1 | 32.7 | 33.0 |
| Average daytime temperature (°C) | 27.6 | 31.8 | 33.6 | 36.0 | 34.1 | 32.8 | 32.3 | 31.8 | 30.1 | 30.6 | 30.7 | 30.0 |
| Average temperature (°C) | 21.8 | 25.7 | 27.8 | 30.8 | 29.4 | 28.4 | 28.0 | 27.9 | 26.5 | 26.6 | 26.0 | 24.7 |
| Average night temperature (°C) | 16.4 | 20.1 | 22.2 | 26.2 | 25.7 | 25.4 | 24.9 | 24.9 | 23.9 | 23.3 | 21.9 | 19.9 |
| Absolute minimum temperature (°C) | 12.8 | 15.6 | 17.8 | 23.2 | 23.1 | 24.1 | 23.4 | 23.6 | 23.0 | 21.8 | 18.1 | 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) | 11.3 | 11.6 | 12.0 | 12.5 | 12.9 | 13.1 | 13.0 | 12.6 | 12.2 | 11.8 | 11.4 | 11.2 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 8.9 | 10.4 | 10.7 | 10.8 | 10.4 | 9.7 | 8.9 | 8.2 | 7.1 | 9.6 | 10.3 | 10.0 |
| Precipitation (mm) | 27 | 16 | 1 | 37 | 173 | 166 | 264 | 209 | 428 | 244 | 25 | 2 |
| Sunny days | 24 | 16 | 26 | 12 | 11 | 3 | 1 | 3 | 0 | 5 | 18 | 29 |
| Rainy days | 7 | 12 | 5 | 18 | 20 | 27 | 30 | 28 | 30 | 26 | 12 | 2 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Ban Nam Sai is at