Average annual temperature is 26.9 °C
Absolute maximum temperature: 32.7 °C
Absolute minimum temperature: 23.0 °C
Number of sunny days: 7 days
Number of rainy days: 358 days
Look at detailed online map of Siawan
* Weather data for Siawan Philippines is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 30.7 | 31.5 | 31.8 | 32.6 | 32.3 | 32.0 | 32.1 | 31.9 | 32.2 | 32.3 | 32.7 | 32.6 |
| Average daytime temperature (°C) | 29.4 | 29.7 | 30.6 | 30.8 | 30.5 | 29.9 | 29.7 | 29.9 | 30.3 | 30.9 | 31.4 | 31.6 |
| Average temperature (°C) | 26.0 | 26.3 | 26.7 | 27.3 | 27.4 | 27.0 | 26.7 | 26.9 | 27.0 | 27.1 | 27.2 | 27.2 |
| Average night temperature (°C) | 24.3 | 24.1 | 24.3 | 24.7 | 25.3 | 24.8 | 24.4 | 24.5 | 24.5 | 24.4 | 24.5 | 24.4 |
| Absolute minimum temperature (°C) | 23.7 | 23.1 | 23.6 | 23.5 | 24.4 | 23.8 | 23.3 | 23.4 | 23.6 | 23.0 | 23.4 | 23.5 |
| 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) | 11.8 | 11.9 | 12.1 | 12.3 | 12.4 | 12.5 | 12.5 | 12.3 | 12.2 | 12.0 | 11.8 | 11.7 |
| 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) | 6.4 | 8.6 | 9.9 | 10.4 | 9.7 | 8.9 | 8.7 | 9.4 | 9.5 | 9.8 | 9.3 | 9.8 |
| Precipitation (mm) | 372 | 183 | 261 | 240 | 224 | 312 | 297 | 178 | 212 | 181 | 240 | 167 |
| Sunny days | 1 | 0 | 1 | 2 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 |
| Rainy days | 30 | 28 | 30 | 28 | 31 | 30 | 31 | 30 | 30 | 30 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siawan is at