Average annual temperature is 27.1 °C
Absolute maximum temperature: 30.8 °C
Absolute minimum temperature: 20.5 °C
Number of sunny days: 91 days
Number of rainy days: 274 days
Look at detailed online map of Southwest
* Weather data for Southwest U.S. Virgin Islands is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 26.6 | 26.6 | 26.7 | 27.5 | 28.9 | 29.5 | 29.8 | 30.6 | 30.8 | 30.0 | 29.3 | 28.7 |
| Average daytime temperature (°C) | 25.9 | 25.6 | 26.0 | 26.5 | 28.0 | 28.9 | 29.3 | 29.5 | 30.1 | 29.3 | 28.5 | 27.6 |
| Average temperature (°C) | 25.1 | 24.8 | 25.0 | 25.5 | 27.2 | 28.1 | 28.4 | 28.6 | 29.2 | 28.3 | 27.7 | 26.7 |
| Average night temperature (°C) | 24.1 | 23.7 | 24.0 | 24.2 | 26.0 | 26.9 | 27.2 | 27.4 | 27.9 | 26.8 | 26.5 | 25.7 |
| Absolute minimum temperature (°C) | 21.8 | 22.4 | 22.7 | 20.5 | 23.7 | 25.1 | 24.5 | 26.0 | 25.8 | 24.8 | 24.2 | 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 | 13.0 | 13.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.2 | 11.6 | 12.0 | 12.5 | 13.0 | 13.2 | 13.1 | 12.7 | 12.2 | 11.7 | 11.3 | 11.1 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.3 | 10.8 | 11.1 | 11.4 | 11.4 | 11.7 | 11.0 | 10.6 | 11.3 | 9.4 | 9.7 | 10.1 |
| Precipitation (mm) | 52 | 23 | 14 | 61 | 53 | 52 | 54 | 112 | 47 | 224 | 72 | 17 |
| Sunny days | 6 | 6 | 13 | 10 | 10 | 5 | 5 | 8 | 6 | 4 | 6 | 12 |
| Rainy days | 25 | 22 | 18 | 20 | 21 | 25 | 26 | 23 | 24 | 27 | 24 | 19 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Southwest is at