Average annual temperature is 23.3 °C
Absolute maximum temperature: 31.2 °C
Absolute minimum temperature: 14.9 °C
Number of sunny days: 38 days
Number of rainy days: 327 days
Look at detailed online map of Cayey
* Weather data for Cayey 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) | 26.0 | 27.4 | 28.1 | 28.6 | 29.6 | 30.6 | 30.2 | 30.7 | 31.2 | 30.6 | 28.9 | 28.3 |
| Average daytime temperature (°C) | 24.9 | 25.3 | 26.4 | 26.7 | 28.0 | 28.7 | 28.9 | 28.8 | 29.5 | 28.6 | 27.2 | 26.3 |
| Average temperature (°C) | 21.0 | 21.0 | 21.5 | 22.3 | 23.8 | 24.9 | 25.0 | 25.0 | 25.0 | 24.5 | 23.5 | 22.1 |
| Average night temperature (°C) | 18.5 | 18.4 | 18.1 | 19.0 | 20.5 | 22.2 | 22.3 | 22.4 | 22.1 | 21.9 | 21.1 | 19.5 |
| Absolute minimum temperature (°C) | 16.9 | 16.7 | 14.9 | 17.3 | 18.6 | 20.7 | 20.4 | 21.4 | 20.9 | 20.5 | 19.5 | 16.5 |
| 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) | 10.2 | 10.6 | 10.6 | 10.9 | 10.8 | 11.0 | 10.1 | 9.3 | 10.6 | 8.8 | 9.0 | 9.6 |
| Precipitation (mm) | 45 | 32 | 25 | 92 | 105 | 98 | 89 | 117 | 117 | 199 | 52 | 44 |
| Sunny days | 6 | 4 | 7 | 2 | 3 | 0 | 6 | 0 | 1 | 1 | 5 | 3 |
| Rainy days | 25 | 24 | 24 | 28 | 28 | 30 | 25 | 31 | 29 | 30 | 25 | 28 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Cayey is at