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Puerto Rico Monthly Climate Averages
To help you choose the best time to travel, you can find climate data below on the weather in Puerto Rico .
| Month | San Juan | Mayaguez | ||
| day | night | day | night | |
| January | +28.4°C | +22.2°C | +29.5°C | +18.3°C |
| February | +28.7°C | +22.2°C | +29.9°C | +18.1°C |
| March | +29.4°C | +22.7°C | +30.6°C | +18.4°C |
| April | +30.1°C | +23.6°C | +31.1°C | +19.2°C |
| May | +30.8°C | +24.6°C | +31.7°C | +20.2°C |
| June | +31.6°C | +25.4°C | +32.3°C | +20.7°C |
| July | +31.5°C | +25.6°C | +32.4°C | +20.9°C |
| August | +31.8°C | +25.7°C | +32.4°C | +21.2°C |
| September | +31.8°C | +25.4°C | +32.3°C | +21.1°C |
| October | +31.3°C | +24.9°C | +31.9°C | +21°C |
| November | +29.9°C | +24°C | +30.9°C | +20.3°C |
| December | +28.8°C | +23°C | +29.9°C | +19.3°C |
Temperature in Puerto Rico
The table shows that the hottest months in Puerto Rico are September and August, during which the average daytime temperature reaches 32.3°C and the nighttime temperature falls to 25.4°C.
The coldest months are January and February, when the daily average temperature falls to 28.4°C, and drops to + 18.3°C during the night.
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Sea temperature
The highest average monthly temperature in the Atlantic Ocean on the beaches of San Juan is in September and August and is 29.1-29.4°C.
The highest average monthly temperature in the Caribbean Sea on the beaches of Mayaguez is in September and October and equals 29.1 29.4°C.
in Puerto Rico climate by month
Precipitation
The largest amount of rain falls on average in November and May, up to 161mm, and the least in March and February — up to 64mm.