Average annual temperature is 27.2 °C
Absolute maximum temperature: 36.3 °C
Absolute minimum temperature: 17.4 °C
Number of sunny days: 45 days
Number of rainy days: 320 days
Look at detailed online map of Ban Si Phanom
* Weather data for Ban Si Phanom 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) | 30.8 | 30.7 | 33.7 | 36.3 | 36.3 | 35.1 | 36.0 | 36.0 | 33.7 | 32.2 | 30.7 | 30.3 |
| Average daytime temperature (°C) | 28.4 | 29.3 | 31.0 | 34.3 | 33.4 | 32.8 | 32.0 | 33.8 | 30.9 | 30.5 | 28.7 | 29.0 |
| Average temperature (°C) | 25.4 | 26.1 | 27.0 | 29.3 | 28.5 | 27.9 | 27.5 | 28.3 | 26.7 | 26.6 | 26.1 | 26.5 |
| Average night temperature (°C) | 22.2 | 22.4 | 23.0 | 24.8 | 24.8 | 24.4 | 24.2 | 24.2 | 23.9 | 23.8 | 23.9 | 24.2 |
| Absolute minimum temperature (°C) | 17.4 | 20.8 | 20.6 | 23.3 | 23.8 | 22.3 | 23.1 | 22.6 | 23.0 | 22.9 | 22.6 | 22.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.6 | 11.8 | 12.1 | 12.3 | 12.6 | 12.7 | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 9.3 | 10.7 | 10.9 | 11.1 | 10.3 | 9.4 | 8.0 | 10.1 | 7.8 | 9.3 | 7.1 | 9.5 |
| Precipitation (mm) | 82 | 50 | 26 | 62 | 159 | 105 | 157 | 121 | 313 | 296 | 387 | 97 |
| Sunny days | 5 | 8 | 17 | 5 | 0 | 5 | 3 | 1 | 0 | 0 | 0 | 1 |
| Rainy days | 26 | 20 | 14 | 25 | 31 | 25 | 28 | 30 | 30 | 31 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Ban Si Phanom is at