St Lucia weather live forecast

Today's maximum temperature in St Lucia is expected to be 29°C. Select a day from the live weather forecast for St Lucia (Castries) for more weather parameters.

Sunday
3rd May
29

26

7

11
Monday
4th May
29

26

8

11
Tuesday
5th May
28

26

8

11
Wednesday
6th May
29

26

6

11
Thursday
7th May
28

26

6

11

5-day weather forecast updated at 04:00 on Saturday 2nd May 2026 GMT

More about St Lucia

St Lucia by month

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

Recommended for St Lucia

TUI: Top deals & discounts on 2026/2027 holidays

Sale

Explore latest special offers & online deals from TUI
Free child places & £0 deposits with direct debit available
Book summer & winter sun holidays in 2026/2027

Go to TUI deal >>

View all TUI offers

TUI deal finder

Destination

The 5-day weather forecast for St Lucia (Castries) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Top St Lucia destinations

Below are temperatures expected today at popular countries, regions and places in St Lucia. Select a destination to see the detailed weather forecast for today, tomorrow and the outlook for the next five days.

All St Lucia destinations

St Lucia weather forecast by day

Below are the detailed weather forecasts for St Lucia for the next 5 days. The forecasts shown are for Castries and may not represent the whole of St Lucia. Browse more destinations in St Lucia to view more weather forecasts.

St Lucia weather for Sunday 3rd May 2026

Expect broken clouds in St Lucia with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the east.

29
°C maximum temperature
26
°C minimum temperature
broken clouds
7
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
22
kph wind from E

St Lucia weather for Monday 4th May 2026

Expect broken clouds in St Lucia with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the east.

29
°C maximum temperature
26
°C minimum temperature
broken clouds
8
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
24
kph wind from E

St Lucia weather for Tuesday 5th May 2026

Expect broken clouds in St Lucia with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 11+ (Extreme) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the east.

28
°C maximum temperature
26
°C minimum temperature
broken clouds
8
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
L
low heat & humidity
24
kph wind from E

St Lucia weather for Wednesday 6th May 2026

Expect broken clouds in St Lucia with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the east.

29
°C maximum temperature
26
°C minimum temperature
broken clouds
6
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
23
kph wind from E

St Lucia weather for Thursday 7th May 2026

Expect broken clouds in St Lucia with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the east.