Average annual temperature is 26.5 °C
Absolute maximum temperature: 38.0 °C
Absolute minimum temperature: 20.3 °C
Number of sunny days: 82 days
Number of rainy days: 283 days
Look at detailed online map of Isherton
* Weather data for Isherton Guyana is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 30.4 | 30.6 | 32.2 | 33.2 | 32.2 | 32.4 | 32.4 | 35.5 | 37.5 | 38.0 | 36.0 | 35.5 |
| Average daytime temperature (°C) | 29.1 | 28.9 | 30.8 | 30.3 | 29.6 | 29.6 | 29.9 | 32.2 | 34.9 | 35.2 | 34.6 | 33.6 |
| Average temperature (°C) | 24.6 | 24.8 | 25.9 | 25.7 | 25.2 | 25.1 | 25.2 | 26.9 | 28.7 | 29.0 | 29.0 | 28.1 |
| Average night temperature (°C) | 21.5 | 22.0 | 22.2 | 22.5 | 22.5 | 22.0 | 21.9 | 22.5 | 23.6 | 23.9 | 24.3 | 23.8 |
| Absolute minimum temperature (°C) | 20.3 | 21.1 | 20.9 | 21.1 | 22.0 | 20.4 | 20.6 | 21.4 | 22.0 | 21.9 | 23.1 | 22.6 |
| 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 | 11.0 |
| Daylight mean duration (h) | 12.0 | 12.0 | 12.1 | 12.2 | 12.2 | 12.3 | 12.2 | 12.2 | 12.1 | 12.1 | 12.0 | 12.0 |
| Daylight minimum 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 |
| Sunshine mean duration (h) | 8.9 | 7.9 | 9.8 | 8.2 | 7.7 | 9.1 | 9.3 | 11.0 | 11.0 | 10.8 | 10.7 | 10.2 |
| Precipitation (mm) | 195 | 141 | 95 | 234 | 467 | 283 | 293 | 55 | 25 | 56 | 28 | 38 |
| Sunny days | 5 | 1 | 5 | 3 | 0 | 0 | 1 | 9 | 21 | 20 | 12 | 5 |
| Rainy days | 26 | 27 | 26 | 27 | 31 | 30 | 30 | 22 | 9 | 11 | 18 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Isherton is at