Average annual temperature is 27.0 °C
Absolute maximum temperature: 34.9 °C
Absolute minimum temperature: 21.8 °C
Number of sunny days: 14 days
Number of rainy days: 351 days
Look at detailed online map of Barnwell
* Weather data for Barnwell 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) | 28.2 | 28.9 | 29.0 | 30.0 | 30.5 | 30.4 | 31.0 | 32.2 | 34.2 | 34.9 | 31.8 | 31.2 |
| Average daytime temperature (°C) | 27.1 | 27.6 | 28.2 | 28.7 | 28.7 | 29.0 | 29.5 | 30.7 | 31.6 | 31.9 | 30.5 | 29.7 |
| Average temperature (°C) | 25.1 | 25.6 | 26.1 | 26.5 | 26.6 | 26.4 | 26.8 | 27.7 | 28.6 | 28.9 | 28.0 | 27.2 |
| Average night temperature (°C) | 23.2 | 23.9 | 24.5 | 24.7 | 24.7 | 24.2 | 24.1 | 24.9 | 26.1 | 26.6 | 25.8 | 25.0 |
| Absolute minimum temperature (°C) | 21.8 | 21.9 | 22.2 | 23.1 | 23.2 | 22.9 | 23.0 | 23.1 | 23.5 | 24.4 | 22.6 | 23.2 |
| 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 | 12.5 | 12.3 | 12.2 | 12.0 | 11.8 | 11.7 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 9.2 | 9.7 | 10.8 | 9.9 | 9.1 | 10.0 | 11.0 | 11.2 | 11.2 | 11.0 | 10.5 | 10.3 |
| Precipitation (mm) | 221 | 170 | 71 | 189 | 303 | 296 | 253 | 122 | 63 | 78 | 119 | 127 |
| Sunny days | 0 | 1 | 7 | 1 | 0 | 0 | 0 | 0 | 0 | 4 | 1 | 0 |
| Rainy days | 31 | 27 | 24 | 29 | 31 | 30 | 31 | 31 | 30 | 27 | 29 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Barnwell is at