Average annual temperature is 25.9 °C
Absolute maximum temperature: 33.7 °C
Absolute minimum temperature: 20.1 °C
Number of sunny days: 19 days
Number of rainy days: 346 days
Look at detailed online map of Nanga Siyai
* Weather data for Nanga Siyai Indonesia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 31.1 | 31.4 | 31.9 | 32.8 | 32.1 | 32.2 | 32.2 | 33.1 | 33.6 | 33.7 | 31.9 | 31.5 |
| Average daytime temperature (°C) | 29.5 | 29.6 | 29.4 | 30.5 | 30.6 | 30.1 | 30.3 | 31.0 | 31.0 | 31.1 | 30.6 | 29.9 |
| Average temperature (°C) | 25.2 | 25.5 | 25.3 | 26.1 | 26.4 | 26.0 | 25.8 | 26.2 | 26.2 | 26.1 | 26.2 | 26.0 |
| Average night temperature (°C) | 22.5 | 22.9 | 22.6 | 23.0 | 23.3 | 23.0 | 22.4 | 22.6 | 22.7 | 22.9 | 23.3 | 23.4 |
| Absolute minimum temperature (°C) | 21.3 | 22.2 | 21.9 | 21.8 | 22.6 | 21.2 | 20.1 | 20.8 | 21.8 | 20.9 | 22.4 | 22.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 8.3 | 7.8 | 7.6 | 9.4 | 9.2 | 9.2 | 9.0 | 9.4 | 9.3 | 9.2 | 8.6 | 8.3 |
| Precipitation (mm) | 374 | 339 | 497 | 205 | 248 | 237 | 231 | 230 | 206 | 360 | 401 | 374 |
| Sunny days | 1 | 0 | 0 | 0 | 0 | 1 | 6 | 3 | 5 | 2 | 1 | 0 |
| Rainy days | 30 | 28 | 31 | 30 | 31 | 29 | 25 | 28 | 25 | 29 | 29 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Nanga Siyai is at