St Lucia weather in May 2025

Expect 25°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in St Lucia in May. Check more long-term weather averages for St Lucia in May before you book your next holiday to South Africa in 2025/2026.

  • 25°C maximum daytime temperature in May in St Lucia25
    25°C max day temperature
  • 8 hours of sunshine per day
  • 8 days with some rainfall in May in St Lucia8
    8 days with some rainfall
  • 16°C minimum night-time temperature in May in St Lucia16
    16°C min night temperature
  • 11 hours of daylight per day in May in St Lucia11
    11 hours of daylight per day
  • Low heat & humidity in May in St LuciaL
    Low heat & humidity
  • 91 mm monthly rainfall in May in St Lucia91
    91 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in St Lucia5
    5 (Moderate) UV index
  • 25°C sea temperature in May in St Lucia25
    25°C sea temperature

More about St Lucia

St Lucia by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for South Africa

  • Book online with TUI & save up to 7% on holidays
  • FREE child places available for select holidays
  • Pay £0 deposits with direct debit & spread the cost

TUITUI deal finder

The May 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)

Back to top

More about South Africa

How hot is it in St Lucia in May?

Daytime temperatures usually reach 25°C in St Lucia in May with low heat and humidity, falling to 16°C at night.

How sunny is it in St Lucia in May?

There are normally 8 hours of bright sunshine each day in St Lucia in May - that's 70% of daylight hours.

How warm is the sea around St Lucia in May?

The average sea temperature around St Lucia in May is 25°C.

Does it rain in St Lucia in May?

There are usually 8 days with some rain in St Lucia in May and the average monthly rainfall is 91mm.

St Lucia May sunrise & sunset times

Browse the sunrise and sunset times for St Lucia in May 2025. Select a month to view St Lucia sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 06:17 17:17
Friday, 16th May 2025 06:26 17:07
Saturday, 31st May 2025 06:34 17:02

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^