Average annual temperature is 23.3 °C
Absolute maximum temperature: 32.0 °C
Absolute minimum temperature: 15.2 °C
Number of sunny days: 39 days
Number of rainy days: 326 days
Look at detailed online map of Castañer
* Weather data for Castañer 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 | 27.2 | 28.6 | 27.9 | 30.3 | 32.0 | 31.6 | 32.0 | 32.0 | 30.8 | 29.0 | 29.7 |
| Average daytime temperature (°C) | 24.6 | 25.8 | 26.4 | 26.2 | 27.9 | 28.8 | 29.7 | 29.2 | 29.4 | 28.9 | 27.6 | 27.3 |
| Average temperature (°C) | 20.6 | 20.9 | 21.4 | 21.9 | 23.8 | 24.9 | 25.3 | 25.2 | 25.2 | 24.7 | 23.6 | 22.5 |
| Average night temperature (°C) | 17.6 | 17.6 | 17.5 | 18.5 | 20.8 | 22.1 | 22.2 | 22.6 | 22.3 | 22.2 | 21.1 | 19.4 |
| Absolute minimum temperature (°C) | 15.2 | 15.6 | 15.4 | 16.9 | 19.0 | 21.0 | 21.2 | 21.7 | 21.5 | 21.0 | 19.4 | 17.5 |
| 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 | 12.6 | 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) | 10.0 | 10.4 | 10.8 | 11.0 | 11.2 | 11.7 | 10.7 | 9.7 | 10.6 | 9.6 | 9.3 | 9.8 |
| Precipitation (mm) | 48 | 29 | 40 | 119 | 80 | 72 | 89 | 106 | 72 | 82 | 83 | 37 |
| Sunny days | 8 | 8 | 5 | 0 | 4 | 2 | 3 | 1 | 0 | 1 | 2 | 5 |
| Rainy days | 23 | 20 | 26 | 30 | 27 | 28 | 28 | 30 | 30 | 30 | 28 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Castañer is at