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St Lucia climate guide
|Maximum daytime temperature °C|
|Hours of sunshine (daily)|
|Days with some rainfall|
|Sea temperature °C|
Below are average maximum temperatures at popular destinations in St Lucia for next month - September. Select a destination to see the climate guide for all months of the year.
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The climate guide for St Lucia (Castries) shows long term monthly 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)
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