Average annual temperature is 17.2 °C
Absolute maximum temperature: 31.0 °C
Absolute minimum temperature: -0.1 °C
Number of sunny days: 90 days
Number of rainy days: 275 days
Look at detailed online map of Houaphan
* Weather data for Houaphan Laos is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 21.8 | 26.9 | 28.2 | 31.0 | 30.9 | 30.2 | 28.2 | 27.0 | 25.6 | 26.1 | 24.8 | 24.3 |
| Average daytime temperature (°C) | 15.5 | 20.3 | 22.2 | 26.6 | 26.7 | 25.7 | 26.1 | 24.0 | 22.9 | 21.8 | 20.0 | 17.9 |
| Average temperature (°C) | 9.7 | 13.8 | 15.8 | 20.1 | 21.0 | 20.6 | 21.1 | 19.9 | 19.0 | 17.4 | 15.0 | 12.7 |
| Average night temperature (°C) | 4.7 | 8.6 | 11.4 | 15.9 | 17.3 | 17.5 | 17.5 | 17.1 | 16.2 | 14.0 | 11.4 | 8.4 |
| Absolute minimum temperature (°C) | 0.1 | 3.2 | 6.2 | 11.5 | 14.0 | 16.0 | 16.0 | 14.6 | 14.5 | 10.8 | 6.4 | -0.1 |
| 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 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 11.0 | 11.5 | 12.0 | 12.6 | 13.1 | 13.4 | 13.2 | 12.8 | 12.3 | 11.7 | 11.2 | 10.9 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.1 | 8.5 | 8.2 | 9.7 | 9.5 | 8.0 | 10.0 | 6.8 | 7.8 | 8.2 | 8.5 | 7.4 |
| Precipitation (mm) | 9 | 48 | 56 | 86 | 104 | 301 | 169 | 227 | 177 | 51 | 31 | 17 |
| Sunny days | 18 | 13 | 5 | 8 | 7 | 0 | 0 | 2 | 1 | 11 | 10 | 15 |
| Rainy days | 13 | 15 | 26 | 22 | 24 | 30 | 31 | 29 | 29 | 20 | 20 | 16 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Houaphan is at