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Puerto Rico Weather September
To help you choose the best time to travel, you can find climate data below on the weather in Puerto Rico in September.
| Puerto Rico Weather September: | San Juan | Mayaguez | |
 | average daily high | +31.8°C | +32.3°C |
 | average daily low | +25.4°C | +21.1°C |
 | sea temperature | +29.4°C | +29.4°C |
 | daylight hours | 12.6h | 12.6h |
 | sunny/overcast hours | 7.8/4.8h | |
 | average monthly precipitation | 147 mm | 259 mm |
Temperature in Puerto Rico
The average daily maximum in September is +31.8 — +32.3°C, and the minimum +25.4 — +21.1°C.
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Sea temperature
The average monthly temperature in the Atlantic Ocean on the beaches of San Juan in September is +29.4 degrees and in the Caribbean Sea on the beaches of Mayaguez +29.4 degrees.
The water is not only warm enough to bathe in, but it is also possible to stay in the water for an extended amount of time.
Precipitation
The normal amount of precipitation for September is from 147 to 259 mm, a very high amount.