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St Lucia weather in September 2019
- 3030°C max day temperature
- 2525 days with some rainfall
- 2424°C min night temperature
- 1212 hours of daylight per day
- VHVery High heat & humidity
- 224224 mm of monthly rainfall
- 1111+ (Extreme) UV index
- 2929°C sea temperature
The September weather guide for St Lucia, represented by Castries, shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
Guide to St Lucia weather in September
The average maximum daytime temperature in St Lucia in September is a hot 30°C (86°F) with very high heat & humidity. The average night-time temperature is usually a warm 24°C (75°F). There are usually 8 hours of bright sunshine each day, which represents 62% of the 12 hours of daylight.
Expect 224mm (8.8 inches) of rainfall across the whole of September with 25 days with some rain falling. Maximum UV levels will be extreme (11+ UV index) at midday when the skies are clear.
The average sea temperature in and around St Lucia in September is 29°C (84°F).
The weather in St Lucia in September is represented by Castries.
St Lucia sunrise & sunset times for September 2019
Browse the sunrise & sunset times for St Lucia in September 2019. Select a month to view St Lucia sunrise & sunset times for the next twelve months. The St Lucia sunrise & sunset times shown below are for Castries.
|Date||Sunrise times||Sunset times|
|Sunday, 1st September 2019||05:52||18:16|
|Sunday, 15th September 2019||05:53||18:05|
|Monday, 30th September 2019||05:53||17:54|
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Discover more about St Lucia
More St Lucia destinations
- Anse la Raye
- Cap Estate
- Choc Bay
- Grand Anse
- Gros Islet
- Morgan Bay
- Reduit Beach
- Rodney Bay
- Vieux Fort
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