- Save up to £300 on summer holidays in 2022/2023
- Discount varies by booking amount (Travel May - Oct)
- Book holidays online in the TUI Live Happy sale
St Lucia weather in May 2022
- 3030°C max day temperature
- 1515 days with some rainfall
- 2424°C min night temperature
- 1313 hours of daylight per day
- HHigh heat & humidity
- 124124 mm of monthly rainfall
- 1111+ (Extreme) UV index
- 2828°C sea temperature
Below are average maximum temperatures at popular destinations in St Lucia in May. Select a destination to see more weather parameters.
TUI deal finder
Recommended for St Lucia
The May 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 St Lucia in May?
Daytime temperatures usually reach 30°C in Castries, St Lucia in May with high heat and humidity, falling to 24°C at night.
How sunny is it in St Lucia in May?
There are normally 8 hours of bright sunshine each day in Castries, St Lucia in May - that's 64% of daylight hours.
How warm is the sea around St Lucia in May?
The average sea temperature around Castries, St Lucia in May is 28°C.
Does it rain in St Lucia in May?
There are usually 15 days with some rain in Castries, St Lucia in May and the average monthly rainfall is 124mm.
St Lucia May sunrise & sunset times
Browse the sunrise and sunset times for St Lucia in May 2022. 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.
|Date||Sunrise times||Sunset times|
|Sunday, 1st May 2022||05:42||18:20|
|Monday, 16th May 2022||05:37||18:24|
|Tuesday, 31st May 2022||05:35||18:29|
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
Popular travel offers
*affiliate links: find out how we are funded and why this helps us remain free to use.