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Castries weather in August 2025
Expect 30°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Castries in August. Check more long-term weather averages for Castries in August before you book your next holiday to St Lucia in 2025/2026.
- 3030°C max day temperature
- 8 hours of sunshine per day
- 2020 days with some rainfall
- 2424°C min night temperature
- 1313 hours of daylight per day
- VHVery High heat & humidity
- 216216 mm of monthly rainfall
- 1111+ (Extreme) UV index
- 2929°C sea temperature
More about Castries
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Recommended for St Lucia
The August weather guide for St Lucia (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)
More about St Lucia
How hot is it in Castries in August?
Daytime temperatures usually reach 30°C in Castries in August with very high heat and humidity, falling to 24°C at night.
How sunny is it in Castries in August?
There are normally 8 hours of bright sunshine each day in Castries in August - that's 65% of daylight hours.
How warm is the sea around Castries in August?
The average sea temperature around Castries in August is 29°C.
Does it rain in Castries in August?
There are usually 20 days with some rain in Castries in August and the average monthly rainfall is 216mm.
What is the chance of a hurricane in Castries in August?
On average less than 1 day in August in Castries is likely to be affected by the passage of one or more tropical storms.
Castries August sunrise & sunset times
Browse the sunrise and sunset times for Castries in August 2025. Select a month to view Castries sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Friday, 1st August 2025 | 05:48 | 18:32 |
Saturday, 16th August 2025 | 05:51 | 18:25 |
Sunday, 31st August 2025 | 05:52 | 18:16 |
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