Average annual temperature is 26.3 °C
Absolute maximum temperature: 39.5 °C
Absolute minimum temperature: 11.7 °C
Number of sunny days: 143 days
Number of rainy days: 222 days
Look at detailed online map of Phon Sai
* Weather data for Phon 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) | 31.5 | 35.9 | 37.9 | 38.6 | 39.5 | 34.8 | 34.1 | 32.2 | 32.0 | 31.9 | 34.2 | 33.5 |
| Average daytime temperature (°C) | 26.9 | 31.5 | 34.5 | 35.8 | 33.8 | 31.5 | 31.4 | 30.3 | 29.5 | 30.4 | 31.1 | 29.6 |
| Average temperature (°C) | 20.4 | 24.8 | 27.6 | 30.2 | 29.3 | 27.6 | 27.3 | 26.9 | 26.0 | 26.0 | 25.8 | 23.7 |
| Average night temperature (°C) | 15.5 | 19.2 | 21.4 | 25.6 | 25.5 | 24.7 | 24.2 | 24.2 | 23.4 | 22.5 | 21.4 | 19.1 |
| Absolute minimum temperature (°C) | 11.7 | 14.2 | 16.7 | 22.5 | 22.7 | 23.2 | 22.8 | 22.4 | 22.6 | 20.4 | 17.7 | 13.0 |
| 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 | 12.7 | 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 | 10.2 | 10.7 | 11.0 | 10.4 | 8.7 | 9.2 | 7.4 | 6.3 | 9.5 | 10.4 | 9.8 |
| Precipitation (mm) | 20 | 20 | 8 | 51 | 183 | 241 | 338 | 263 | 482 | 150 | 20 | 1 |
| Sunny days | 26 | 17 | 23 | 12 | 9 | 1 | 0 | 0 | 1 | 4 | 21 | 29 |
| Rainy days | 5 | 11 | 8 | 18 | 22 | 29 | 31 | 31 | 29 | 27 | 9 | 2 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Phon Sai is at