- Compare car hire prices to find lowest rate
- Free cancellation up to 48 hours before pick up
- Book car hire for over 20,000 destinations worldwide
St Lucia weather in September 2026
Expect daytime maximum temperatures of 24°C 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 87 mm of rainfall in the month.
- 24°C max day temperature
24 - 7 hours of sunshine per day
- 9 days with some rainfall
9 - 16°C min night temperature
16 - 12 hours of daylight per day
12 - No heat & humidity
0 - 87 mm of monthly rainfall
87 - 8 (Very High) UV index
8 - 22°C sea temperature
22
More about St Lucia
- Best time to visit
- Weather by month
- 5-day weather forecast
- Destinations
- Travel guide
- Deals & discounts
St Lucia by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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 / mm) | Imperial (°F / inches)
More about South Africa
How hot is it in St Lucia in September?
Daytime temperatures usually reach 18°C in St Lucia in September, falling to 9°C 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 15°C.
Does it rain in St Lucia in September?
There are usually 11 days with some rain in St Lucia in September and the average monthly rainfall is 96mm.
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 |
Be inspired
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Related posts
Popular travel offers
Explore holiday destinations
- Beach holidays
- City breaks
- Family holidays
- Half term holidays
- Spring holidays
- Summer holidays
- Autumn holidays
- Winter sun holidays
- Honeymoons
- Coolcations
- Compare places
- Ski resorts
Save with latest deals & discounts
- Holiday offers
- Top travel brands
- Airlines & flights
- Discount hotels
- TUI
- Jet2holidays
- Neilson
- Marella Cruises
- Roamless eSIMs
- Confused.com
- Pierre & Vacances
- Caledonian Travel
Airport parking
- Manchester Airport
- Stansted Airport
- Bristol Airport
- Luton Airport
- Birmingham Airport
- Edinburgh Airport
- Gatwick Airport
- Glasgow Airport
- Newcastle Airport
Airport lounges
- Manchester Airport
- Birmingham Airport
- Bristol Airport
- Edinburgh Airport
- Glasgow Airport
- Heathrow Airport
- Newcastle Airport
- Stansted Airport
- Gatwick Airport