Average annual temperature is 26.7 °C
Absolute maximum temperature: 34.5 °C
Absolute minimum temperature: 19.6 °C
Number of sunny days: 54 days
Number of rainy days: 311 days
Look at detailed online map of Costa Sur
* Weather data for Costa Sur 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) | 29.4 | 30.1 | 29.9 | 30.6 | 31.1 | 32.3 | 32.3 | 33.5 | 33.4 | 34.5 | 30.4 | 30.7 |
| Average daytime temperature (°C) | 27.8 | 28.2 | 28.8 | 29.0 | 29.8 | 30.6 | 31.1 | 31.0 | 31.6 | 30.8 | 29.6 | 29.1 |
| Average temperature (°C) | 24.7 | 24.7 | 25.1 | 25.8 | 27.2 | 28.0 | 28.2 | 28.2 | 28.4 | 27.6 | 27.0 | 25.7 |
| Average night temperature (°C) | 22.5 | 22.3 | 22.3 | 23.0 | 24.7 | 25.8 | 25.9 | 25.9 | 25.8 | 25.4 | 25.0 | 23.2 |
| Absolute minimum temperature (°C) | 21.2 | 21.0 | 19.6 | 20.4 | 23.1 | 23.4 | 23.2 | 24.1 | 24.6 | 23.7 | 23.4 | 20.5 |
| 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 | 10.8 | 10.9 | 11.2 | 11.1 | 11.4 | 10.6 | 10.1 | 11.0 | 9.5 | 9.4 | 10.1 |
| Precipitation (mm) | 28 | 21 | 18 | 36 | 72 | 99 | 97 | 98 | 55 | 169 | 58 | 35 |
| Sunny days | 8 | 9 | 8 | 1 | 4 | 4 | 4 | 1 | 3 | 2 | 3 | 7 |
| Rainy days | 23 | 19 | 23 | 29 | 27 | 26 | 27 | 30 | 27 | 29 | 27 | 24 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Costa Sur is at