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St Lucia
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St Lucia Weather September

St Lucia is located in wet tropical or so-called equatorial climate zone, which is known for hot, humid weather and lack of apparent seasonal fluctuation.

To help you choose the best time to travel, you can find climate data below on the weather in St Lucia in September.

day temperatureaverage daily high+31.6°C
night temperatureaverage daily low+24.8°C
sea temperaturesea temperature+29.5°C
day lengthdaytime12.6 h
average monthly precipitationaverage monthly precipitation155 mm

High season with the best weather conditions for the beach leisure in St Lucia are typically January, February, March, April, December.

Best places in September


Temperature in St Lucia

In September the average daily maximum in St Lucia is +31.6°C, and the minimum +24.8°C.

The hottest September day on record is +33.8°C, and the coldest +20.6°C.

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Best beach resorts in September:

Barcelona
Spain

Nice
France

Rimini
Italy

Cannes
France

Lisbon
Portugal

Marseille
France


Algarve
Portugal

Marbella
Spain

Naples
Italy

Split
Croatia

Jeju
South Korea

Dubrovnik
Croatia


Daylight hours

There are 12.6 hours of daylight in St Lucia in September.

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Sea temperature

The average monthly temperature in the Caribbean Sea on the beaches of Saint Lucia in September is +29.5°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.

St Lucia climate by month


Precipitation

The amount of precipitation in St Lucia in September is usually 155 mm, a very high amount.