Average annual temperature is 26.3 °C
Absolute maximum temperature: 38.5 °C
Absolute minimum temperature: 18.9 °C
Number of sunny days: 58 days
Number of rainy days: 307 days
Look at detailed online map of Gran Slee
* Weather data for Gran Slee Suriname 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 | 30.7 | 32.3 | 33.4 | 33.5 | 32.7 | 32.5 | 34.7 | 37.9 | 38.5 | 37.4 | 34.8 |
| Average daytime temperature (°C) | 28.6 | 28.9 | 31.1 | 30.5 | 30.8 | 31.1 | 31.1 | 32.5 | 35.3 | 36.4 | 35.4 | 32.6 |
| Average temperature (°C) | 23.9 | 24.1 | 25.4 | 25.3 | 25.5 | 25.8 | 25.9 | 26.9 | 28.4 | 29.3 | 28.7 | 26.7 |
| Average night temperature (°C) | 21.2 | 21.9 | 21.7 | 22.2 | 22.7 | 22.4 | 22.6 | 22.9 | 23.6 | 24.2 | 24.0 | 23.1 |
| Absolute minimum temperature (°C) | 18.9 | 20.9 | 20.3 | 21.0 | 22.2 | 21.5 | 21.5 | 22.0 | 21.9 | 23.1 | 22.1 | 22.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.9 | 12.0 | 12.1 | 12.2 | 12.3 | 12.4 | 12.3 | 12.2 | 12.1 | 12.0 | 11.9 | 11.9 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 7.8 | 6.9 | 10.2 | 8.0 | 8.1 | 9.7 | 10.1 | 11.1 | 11.0 | 10.8 | 10.5 | 9.9 |
| Precipitation (mm) | 406 | 347 | 141 | 636 | 472 | 290 | 328 | 121 | 32 | 19 | 43 | 173 |
| Sunny days | 2 | 0 | 3 | 1 | 1 | 0 | 0 | 13 | 13 | 19 | 5 | 1 |
| Rainy days | 29 | 28 | 28 | 29 | 30 | 30 | 31 | 18 | 17 | 12 | 25 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Gran Slee is at