Average annual temperature is 27.0 °C
Absolute maximum temperature: 33.5 °C
Absolute minimum temperature: 22.0 °C
Number of sunny days: 28 days
Number of rainy days: 337 days
Look at detailed online map of Alness
* Weather data for Alness 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) | 28.4 | 28.3 | 29.3 | 29.7 | 30.5 | 30.6 | 31.5 | 31.9 | 33.5 | 33.4 | 32.0 | 30.6 |
| Average daytime temperature (°C) | 27.1 | 27.3 | 28.4 | 28.7 | 28.8 | 29.4 | 30.0 | 30.9 | 31.9 | 32.2 | 30.9 | 29.7 |
| Average temperature (°C) | 25.1 | 25.5 | 26.3 | 26.5 | 26.5 | 26.6 | 27.1 | 27.8 | 28.7 | 29.1 | 28.2 | 27.1 |
| Average night temperature (°C) | 23.4 | 23.9 | 24.7 | 24.7 | 24.6 | 24.1 | 24.3 | 25.4 | 26.6 | 27.2 | 26.2 | 24.9 |
| Absolute minimum temperature (°C) | 22.0 | 22.4 | 22.5 | 23.4 | 23.5 | 22.3 | 22.7 | 22.7 | 23.5 | 24.4 | 23.1 | 22.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 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 | 12.4 | 12.3 | 12.2 | 12.0 | 11.8 | 11.8 |
| 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) | 9.1 | 8.8 | 10.7 | 9.7 | 9.0 | 10.3 | 11.0 | 10.9 | 11.2 | 11.0 | 10.7 | 10.5 |
| Precipitation (mm) | 269 | 231 | 83 | 191 | 289 | 358 | 191 | 111 | 36 | 30 | 98 | 165 |
| Sunny days | 2 | 2 | 3 | 3 | 0 | 0 | 0 | 4 | 5 | 8 | 1 | 0 |
| Rainy days | 29 | 26 | 28 | 27 | 31 | 30 | 31 | 27 | 25 | 23 | 29 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Alness is at