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St Lucia weather in January 2025
Expect 28°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in St Lucia in January. Check more long-term weather averages for St Lucia in January before you book your next holiday to St Lucia in 2025/2026.
- 2828°C max day temperature
- 1717 days with some rainfall
- 2222°C min night temperature
- 1111 hours of daylight per day
- MModerate heat & humidity
- 113113 mm of monthly rainfall
- 99 (Very High) UV index
- 2727°C sea temperature
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Recommended for St Lucia
The January 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.
Top St Lucia destinations
Below are average maximum temperatures at popular destinations in St Lucia in January. Select a destination to see more weather parameters.
All St Lucia destinations
- Anse la Raye
- Cap Estate
- Choc Bay
- Grand Anse
- Gros Islet
- Marigot Bay
- Morgan Bay
- Reduit Beach
- Rodney Bay
- Vieux Fort
Metric (°C / mm) | Imperial (°F / inches)
More about St Lucia
How hot is it in St Lucia in January?
Daytime temperatures usually reach 28°C in Castries, St Lucia in January with moderate heat and humidity, falling to 22°C at night.
How sunny is it in St Lucia in January?
There are normally 8 hours of bright sunshine each day in Castries, St Lucia in January - that's 72% of daylight hours.
How warm is the sea around St Lucia in January?
The average sea temperature around Castries, St Lucia in January is 27°C.
Does it rain in St Lucia in January?
There are usually 17 days with some rain in Castries, St Lucia in January and the average monthly rainfall is 113mm.
St Lucia January sunrise & sunset times
Browse the sunrise and sunset times for St Lucia in January 2025. Select a month to view St Lucia sunrise and sunset times for the next 12 months. The St Lucia sunrise and sunset times shown below are for Castries.
|Wednesday, 1st January 2025
|Thursday, 16th January 2025
|Friday, 31st January 2025
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