Average annual temperature is 26.4 °C
Absolute maximum temperature: 34.5 °C
Absolute minimum temperature: 18.5 °C
Number of sunny days: 74 days
Number of rainy days: 291 days
Look at detailed online map of Guayanilla
* Weather data for Guayanilla 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) | 30.2 | 31.2 | 30.6 | 31.2 | 31.9 | 33.8 | 33.5 | 34.5 | 33.7 | 33.7 | 30.9 | 32.3 |
| Average daytime temperature (°C) | 28.2 | 29.2 | 29.0 | 29.3 | 30.6 | 31.3 | 31.9 | 31.8 | 32.2 | 31.1 | 29.8 | 30.0 |
| Average temperature (°C) | 24.2 | 24.6 | 24.8 | 25.5 | 27.1 | 28.0 | 28.1 | 28.0 | 28.0 | 27.2 | 26.4 | 25.2 |
| Average night temperature (°C) | 21.1 | 20.7 | 21.1 | 22.3 | 24.3 | 25.3 | 24.9 | 24.9 | 24.6 | 24.5 | 23.8 | 21.3 |
| Absolute minimum temperature (°C) | 18.9 | 18.7 | 19.0 | 20.9 | 23.3 | 23.0 | 22.7 | 23.0 | 22.5 | 22.8 | 20.9 | 18.5 |
| 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) | 10.3 | 10.7 | 11.0 | 11.2 | 11.3 | 11.8 | 10.9 | 9.8 | 10.9 | 9.7 | 9.4 | 9.9 |
| Precipitation (mm) | 45 | 23 | 19 | 78 | 69 | 83 | 55 | 115 | 93 | 154 | 56 | 27 |
| Sunny days | 12 | 13 | 12 | 1 | 6 | 2 | 7 | 1 | 2 | 4 | 5 | 9 |
| Rainy days | 19 | 15 | 19 | 29 | 25 | 28 | 24 | 30 | 28 | 27 | 25 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Guayanilla is at