Average annual temperature is 25.8 °C
Absolute maximum temperature: 39.9 °C
Absolute minimum temperature: 9.9 °C
Number of sunny days: 171 days
Number of rainy days: 194 days
Look at detailed online map of Koyelkhali
* Weather data for Koyelkhali Bangladesh is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 29.9 | 33.2 | 34.7 | 39.9 | 38.6 | 37.9 | 34.4 | 34.4 | 33.8 | 33.3 | 32.6 | 29.3 |
| Average daytime temperature (°C) | 25.4 | 29.5 | 31.4 | 35.2 | 34.5 | 33.9 | 32.7 | 32.4 | 31.8 | 31.2 | 29.1 | 25.4 |
| Average temperature (°C) | 18.5 | 22.6 | 25.1 | 28.6 | 29.1 | 29.7 | 29.0 | 28.6 | 28.2 | 26.7 | 23.6 | 19.7 |
| Average night temperature (°C) | 13.0 | 16.2 | 19.8 | 23.0 | 24.7 | 26.9 | 26.3 | 26.0 | 25.6 | 22.6 | 18.2 | 14.9 |
| Absolute minimum temperature (°C) | 9.9 | 11.7 | 17.3 | 20.0 | 21.6 | 24.8 | 25.2 | 24.7 | 23.9 | 19.1 | 15.0 | 11.9 |
| 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) | 10.9 | 11.4 | 12.0 | 12.7 | 13.3 | 13.5 | 13.4 | 12.9 | 12.3 | 11.6 | 11.0 | 10.7 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.6 | 9.7 | 9.3 | 10.6 | 10.3 | 7.7 | 10.0 | 8.1 | 7.8 | 9.0 | 9.4 | 8.6 |
| Precipitation (mm) | 0 | 1 | 122 | 51 | 206 | 309 | 247 | 335 | 330 | 179 | 47 | 55 |
| Sunny days | 30 | 25 | 15 | 17 | 8 | 2 | 0 | 0 | 1 | 20 | 26 | 27 |
| Rainy days | 1 | 3 | 16 | 13 | 23 | 28 | 31 | 31 | 29 | 11 | 4 | 4 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Koyelkhali is at