Average annual temperature is 26.7 °C
Absolute maximum temperature: 38.3 °C
Absolute minimum temperature: 20.5 °C
Number of sunny days: 121 days
Number of rainy days: 244 days
Look at detailed online map of Grejen
* Weather data for Grejen 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) | 30.8 | 30.4 | 31.4 | 32.3 | 32.3 | 33.5 | 32.9 | 35.6 | 37.1 | 38.3 | 37.0 | 37.0 |
| Average daytime temperature (°C) | 28.8 | 27.9 | 29.8 | 30.2 | 30.8 | 32.2 | 31.4 | 33.9 | 35.1 | 36.5 | 34.4 | 33.1 |
| Average temperature (°C) | 25.3 | 24.7 | 25.6 | 26.0 | 26.5 | 27.0 | 26.1 | 26.8 | 27.2 | 29.2 | 28.3 | 27.7 |
| Average night temperature (°C) | 22.6 | 22.4 | 22.7 | 23.1 | 23.2 | 23.5 | 22.2 | 22.0 | 22.4 | 24.2 | 24.6 | 24.3 |
| Absolute minimum temperature (°C) | 21.4 | 21.4 | 21.5 | 21.5 | 22.3 | 22.1 | 20.5 | 20.7 | 20.6 | 23.1 | 23.3 | 23.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.5 | 12.3 | 12.1 | 11.9 | 11.8 | 11.7 | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 7.9 | 5.5 | 8.6 | 9.3 | 10.2 | 10.8 | 10.6 | 10.9 | 11.0 | 11.2 | 10.6 | 10.3 |
| Precipitation (mm) | 141 | 308 | 290 | 186 | 136 | 31 | 42 | 0 | 6 | 28 | 136 | 167 |
| Sunny days | 0 | 1 | 1 | 1 | 16 | 11 | 22 | 28 | 23 | 6 | 1 | 11 |
| Rainy days | 31 | 27 | 30 | 29 | 15 | 19 | 9 | 3 | 7 | 25 | 29 | 20 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Grejen is at