Average annual temperature is 26.2 °C
Absolute maximum temperature: 35.5 °C
Absolute minimum temperature: 17.2 °C
Number of sunny days: 57 days
Number of rainy days: 308 days
Look at detailed online map of Sierra Bayamon
* Weather data for Sierra Bayamon 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) | 29.8 | 29.9 | 32.5 | 31.8 | 34.0 | 35.5 | 34.3 | 34.5 | 34.7 | 34.2 | 32.3 | 31.6 |
| Average daytime temperature (°C) | 28.0 | 28.3 | 29.9 | 30.2 | 32.5 | 33.8 | 32.3 | 32.5 | 32.8 | 31.7 | 30.3 | 28.8 |
| Average temperature (°C) | 23.3 | 23.6 | 24.3 | 24.8 | 27.0 | 28.7 | 28.1 | 28.1 | 28.1 | 27.3 | 26.3 | 24.9 |
| Average night temperature (°C) | 19.9 | 20.0 | 19.9 | 20.7 | 22.7 | 24.6 | 24.7 | 25.0 | 24.5 | 24.1 | 23.3 | 22.0 |
| Absolute minimum temperature (°C) | 18.2 | 18.2 | 17.2 | 18.6 | 21.2 | 23.5 | 23.1 | 23.5 | 23.1 | 22.8 | 21.6 | 19.2 |
| 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 | 10.7 | 11.0 | 11.0 | 11.5 | 11.8 | 11.0 | 10.3 | 10.9 | 9.5 | 9.1 | 10.0 |
| Precipitation (mm) | 80 | 42 | 31 | 119 | 87 | 66 | 106 | 168 | 92 | 155 | 85 | 52 |
| Sunny days | 4 | 9 | 8 | 1 | 5 | 8 | 3 | 1 | 1 | 5 | 6 | 6 |
| Rainy days | 27 | 19 | 23 | 29 | 26 | 22 | 28 | 30 | 29 | 26 | 24 | 25 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sierra Bayamon is at