Climate averages 1991–2020
Weather in Puerto Rico in August
In August, average daytime highs across the 7 cities listed in Puerto Rico range from 30.3°C in Caguas to 31.7°C in Arecibo. Monthly rainfall ranges from 67 mm in Mayagüez to 127 mm in Caguas.
Long-term climate patterns, not a forecast for a particular trip.
City by city
August in Puerto Rico
| City | Average highHigh / low | Average low | Rainfall mm | Rain days |
|---|---|---|---|---|
| San Juan | 31.5°C24.7°C | 24.7°C | 95 | 18.7 |
| Bayamón | 31.6°C24.8°C | 24.8°C | 79 | 17.4 |
| Carolina | 31.1°C24.9°C | 24.9°C | 95 | 18.7 |
| Ponce | 30.5°C24.8°C | 24.8°C | 77 | 15.4 |
| Arecibo | 31.7°C24.7°C | 24.7°C | 101 | 19.6 |
| Caguas | 30.3°C24.8°C | 24.8°C | 127 | 23.9 |
| Mayagüez | 31.3°C25.8°C | 25.8°C | 67 | 16.7 |
A rain day is a local calendar day with at least 1 mm of precipitation.