Average annual temperature is 25.9 °C
Absolute maximum temperature: 40.2 °C
Absolute minimum temperature: 9.5 °C
Number of sunny days: 146 days
Number of rainy days: 219 days
Look at detailed online map of Ban Sièou
* Weather data for Ban Sièou 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) | 31.0 | 33.9 | 36.0 | 40.2 | 39.8 | 38.1 | 37.2 | 33.6 | 34.0 | 32.1 | 32.5 | 33.3 |
| Average daytime temperature (°C) | 27.7 | 31.2 | 33.0 | 36.7 | 36.0 | 32.8 | 33.7 | 29.9 | 30.5 | 30.0 | 30.2 | 29.4 |
| Average temperature (°C) | 20.7 | 23.9 | 25.7 | 29.1 | 29.5 | 27.8 | 28.3 | 26.4 | 26.4 | 25.6 | 23.9 | 22.9 |
| Average night temperature (°C) | 13.9 | 17.3 | 19.7 | 23.1 | 24.8 | 24.3 | 24.6 | 23.7 | 23.5 | 21.8 | 19.0 | 17.3 |
| Absolute minimum temperature (°C) | 9.5 | 13.7 | 16.5 | 20.8 | 21.8 | 23.5 | 23.8 | 22.6 | 22.3 | 19.0 | 14.9 | 10.8 |
| 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 | 11.0 |
| Daylight mean duration (h) | 11.1 | 11.5 | 12.0 | 12.6 | 13.1 | 13.3 | 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 | 11.0 | 10.0 |
| Sunshine mean duration (h) | 9.8 | 10.4 | 9.4 | 10.2 | 10.8 | 8.9 | 10.1 | 6.9 | 9.0 | 9.6 | 9.8 | 9.6 |
| Precipitation (mm) | 1 | 6 | 30 | 32 | 128 | 275 | 213 | 387 | 371 | 98 | 23 | 20 |
| Sunny days | 28 | 20 | 22 | 21 | 5 | 0 | 2 | 1 | 2 | 8 | 18 | 19 |
| Rainy days | 3 | 8 | 9 | 9 | 26 | 30 | 29 | 30 | 28 | 23 | 12 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Ban Sièou is at