Average annual temperature is 25.7 °C
Absolute maximum temperature: 30.9 °C
Absolute minimum temperature: 20.5 °C
Number of sunny days: 54 days
Number of rainy days: 311 days
Look at detailed online map of Isabela
* Weather data for Isabela 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) | 26.4 | 25.6 | 26.9 | 26.8 | 28.5 | 30.9 | 29.3 | 30.8 | 30.4 | 30.4 | 30.8 | 27.9 |
| Average daytime temperature (°C) | 25.2 | 25.0 | 25.2 | 25.6 | 27.5 | 28.5 | 28.6 | 29.0 | 29.1 | 28.9 | 28.2 | 26.5 |
| Average temperature (°C) | 23.6 | 23.6 | 23.8 | 24.1 | 25.6 | 26.9 | 27.3 | 27.3 | 27.4 | 27.0 | 26.4 | 25.1 |
| Average night temperature (°C) | 22.1 | 22.0 | 22.0 | 22.4 | 23.9 | 25.4 | 25.9 | 25.8 | 25.8 | 25.3 | 24.9 | 23.6 |
| Absolute minimum temperature (°C) | 20.8 | 20.5 | 20.6 | 20.6 | 22.7 | 24.1 | 23.8 | 24.5 | 23.7 | 23.8 | 23.7 | 22.1 |
| 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) | 10.3 | 10.6 | 11.0 | 11.3 | 11.3 | 11.9 | 10.9 | 9.8 | 10.7 | 10.0 | 9.4 | 10.0 |
| Precipitation (mm) | 62 | 34 | 24 | 32 | 103 | 82 | 85 | 113 | 64 | 136 | 95 | 61 |
| Sunny days | 5 | 3 | 12 | 8 | 3 | 3 | 4 | 3 | 0 | 1 | 7 | 5 |
| Rainy days | 26 | 25 | 19 | 22 | 28 | 27 | 27 | 28 | 30 | 30 | 23 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Isabela is at