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San Juan Weather September
San Juan is located in tropical monsoon climate zone. Typical weather for this zone is vast rainfall during summertime and significant decrease in winter. Thus with insignificant temperature variance we can see big change in precipitation between seasons.
To help you choose the best time to travel, you can find climate data below on the weather in San Juan in September.
 | average daily high | +31.8°C |
 | average daily low | +25.4°C |
 | sea temperature | +29.4°C |
 | daytime | 12.6 h |
 | sunny / overcast hours | 7.8 / 4.8 |
 | average monthly precipitation | 147 mm |
High season with the best weather conditions for the beach leisure in San Juan are typically January, February, December.
Temperature in San Juan
In September the average daily maximum in San Juan is +31.8°C, and the minimum +25.4°C.
The hottest September day on record is +39.5°C, and the coldest +9.3°C.
Most booked hotels in San Juan
Best beach resorts in September:
Barcelona
Spain
Nice
France
Rimini
Italy
Cannes
France
Lisbon
Portugal
Marseille
France
Daylight hours
There are 12.6 hours of daylight in San Juan in September. Out of these, on average 7.8 are sunny, which means there is quite a lot of sun.
Most Popular Destinations in the World
Sea temperature
The average monthly temperature in the Atlantic Ocean on the beaches of San Juan in September is +29.4°C.
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 amount of precipitation in San Juan in September is usually 147 mm, which may ruin part of the trip.