Average annual temperature is 26.8 °C
Absolute maximum temperature: 31.1 °C
Absolute minimum temperature: 22.2 °C
Number of sunny days: 84 days
Number of rainy days: 281 days
Look at detailed online map of Gros Islet
* Weather data for Gros Islet Saint Lucia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 27.2 | 26.0 | 26.5 | 27.6 | 28.1 | 29.0 | 29.7 | 31.1 | 31.1 | 29.9 | 29.2 | 28.0 |
| Average daytime temperature (°C) | 25.9 | 25.5 | 25.8 | 26.4 | 27.5 | 28.2 | 28.4 | 29.1 | 29.5 | 29.1 | 28.2 | 27.3 |
| Average temperature (°C) | 25.2 | 24.8 | 25.2 | 25.7 | 26.9 | 27.5 | 27.6 | 28.2 | 28.5 | 28.3 | 27.5 | 26.6 |
| Average night temperature (°C) | 24.1 | 23.8 | 24.3 | 24.8 | 26.1 | 26.3 | 26.3 | 27.0 | 27.3 | 27.1 | 26.5 | 25.7 |
| Absolute minimum temperature (°C) | 22.3 | 22.2 | 23.0 | 23.5 | 24.9 | 24.5 | 24.7 | 25.4 | 25.4 | 24.5 | 24.6 | 24.6 |
| 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) | 11.4 | 11.7 | 12.1 | 12.5 | 12.8 | 12.9 | 12.9 | 12.6 | 12.2 | 11.8 | 11.5 | 11.3 |
| 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) | 10.3 | 10.8 | 11.2 | 11.6 | 11.4 | 11.0 | 10.7 | 10.8 | 11.1 | 9.7 | 10.4 | 10.1 |
| Precipitation (mm) | 46 | 44 | 29 | 56 | 15 | 113 | 123 | 95 | 68 | 97 | 58 | 78 |
| Sunny days | 2 | 3 | 13 | 9 | 12 | 5 | 2 | 6 | 10 | 8 | 10 | 4 |
| Rainy days | 29 | 25 | 18 | 21 | 19 | 25 | 29 | 25 | 20 | 23 | 20 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Gros Islet is at