Average annual temperature is 26.5 °C
Absolute maximum temperature: 35.1 °C
Absolute minimum temperature: 17.1 °C
Number of sunny days: 62 days
Number of rainy days: 303 days
Look at detailed online map of St. Just Barrio
* Weather data for St. Just Barrio Puerto Rico is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 30.0 | 30.0 | 32.0 | 32.3 | 33.8 | 34.6 | 34.2 | 34.7 | 35.1 | 34.6 | 32.7 | 32.3 |
| Average daytime temperature (°C) | 28.0 | 28.0 | 29.6 | 30.1 | 32.2 | 33.4 | 32.4 | 32.6 | 33.2 | 32.1 | 30.8 | 29.1 |
| Average temperature (°C) | 23.6 | 23.9 | 24.4 | 24.9 | 26.9 | 28.5 | 28.5 | 28.5 | 28.7 | 27.8 | 27.1 | 25.6 |
| Average night temperature (°C) | 20.2 | 20.7 | 20.2 | 20.7 | 22.6 | 24.7 | 25.5 | 25.6 | 25.3 | 24.6 | 24.2 | 22.9 |
| Absolute minimum temperature (°C) | 18.4 | 17.5 | 17.1 | 18.3 | 21.2 | 23.3 | 23.5 | 23.9 | 24.0 | 23.4 | 22.1 | 20.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.2 | 11.5 | 12.0 | 12.6 | 13.0 | 13.2 | 13.1 | 12.7 | 12.2 | 11.7 | 11.3 | 11.0 |
| 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) | 10.0 | 10.8 | 10.9 | 11.0 | 11.4 | 11.8 | 10.9 | 10.3 | 11.0 | 9.5 | 9.1 | 9.9 |
| Precipitation (mm) | 73 | 43 | 32 | 132 | 88 | 57 | 74 | 105 | 59 | 148 | 67 | 48 |
| Sunny days | 4 | 9 | 6 | 3 | 6 | 8 | 5 | 3 | 1 | 1 | 8 | 8 |
| Rainy days | 27 | 19 | 25 | 27 | 25 | 22 | 26 | 28 | 29 | 30 | 22 | 23 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in St. Just Barrio is at