Average annual temperature is 25.5 °C
Absolute maximum temperature: 34.7 °C
Absolute minimum temperature: 17.3 °C
Number of sunny days: 43 days
Number of rainy days: 322 days
Look at detailed online map of San Sebastián Municipio
* Weather data for San Sebastián Municipio 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) | 30.9 | 30.3 | 32.3 | 31.5 | 33.4 | 34.7 | 34.3 | 34.5 | 33.7 | 34.3 | 32.9 | 31.3 |
| Average daytime temperature (°C) | 27.6 | 28.2 | 29.5 | 29.5 | 31.5 | 32.5 | 32.2 | 31.9 | 32.1 | 31.8 | 30.2 | 29.2 |
| Average temperature (°C) | 23.0 | 23.4 | 23.9 | 24.1 | 25.6 | 27.2 | 27.4 | 27.2 | 27.1 | 26.6 | 25.7 | 24.6 |
| Average night temperature (°C) | 19.8 | 20.1 | 19.7 | 20.1 | 21.3 | 23.4 | 24.1 | 24.1 | 23.7 | 23.2 | 22.6 | 21.4 |
| Absolute minimum temperature (°C) | 17.8 | 18.0 | 17.3 | 18.2 | 19.1 | 21.9 | 22.3 | 23.1 | 20.4 | 20.6 | 19.8 | 19.0 |
| 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) | 10.2 | 10.6 | 11.0 | 11.2 | 11.1 | 11.8 | 10.6 | 9.6 | 10.7 | 10.0 | 9.4 | 10.1 |
| Precipitation (mm) | 67 | 31 | 42 | 118 | 161 | 111 | 155 | 233 | 134 | 171 | 123 | 33 |
| Sunny days | 6 | 9 | 7 | 1 | 0 | 1 | 2 | 3 | 0 | 1 | 4 | 9 |
| Rainy days | 25 | 19 | 24 | 29 | 31 | 29 | 29 | 28 | 30 | 30 | 26 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Sebastián Municipio is at