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St Lucia weather in September 2026
Expect daytime maximum temperatures of 75°F in St Lucia, South Africa in September based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 3.4 inches of rainfall in the month.
- 75°F max day temperature
75 - 7 hours of sunshine per day
- 9 days with some rainfall
9 - 61°F min night temperature
61 - 12 hours of daylight per day
12 - No heat & humidity
0 - 3.4 inches of monthly rainfall
3.4 - 8 (Very High) UV index
8 - 72°F sea temperature
72
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Recommended for South Africa
The September weather guide for South Africa (St Lucia) 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) | Imperial (°F)
More about South Africa
How hot is it in St Lucia in September?
Daytime temperatures usually reach 75°F in St Lucia in September, falling to 61°F at night.
How sunny is it in St Lucia in September?
There are normally 7 hours of bright sunshine each day in St Lucia in September - that's 62% of daylight hours.
How warm is the sea around St Lucia in September?
The average sea temperature around St Lucia in September is 72°F.
Does it rain in St Lucia in September?
There are usually 9 days with some rain in St Lucia in September and the average monthly rainfall is 3.4 inches.
St Lucia September sunrise & sunset times
Browse the sunrise and sunset times for St Lucia in September 2026. Select a month to view St Lucia sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Tuesday, 1st September 2026 | 06:05 | 17:36 |
| Tuesday, 15th September 2026 | 05:48 | 17:43 |
| Wednesday, 30th September 2026 | 05:31 | 17:51 |
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