Gros Islet weather live forecast

Today's maximum temperature in Gros Islet is expected to be 31°C. Select a day from the live weather forecast for Gros Islet, St Lucia for more weather parameters.

Tuesday
19th May
31

26

6

UV10
Wednesday
20th May
30

27

7

UV11
Thursday
21st May
31

27

6

UV11
Friday
22nd May
31

27

7

UV11
Saturday
23rd May
31

27

6

UV11

5-day weather forecast updated at 04:02 on Tuesday 19th May 2026 GMT

More about Gros Islet

Gros Islet 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 (Gros Islet) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Gros Islet weather forecast by day

Below are the detailed weather forecasts for Gros Islet for the next 5 days.

Gros Islet weather for Tuesday 19th May 2026

Expect isolated thunderstorms in Gros Islet, St Lucia with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 36% chance of some rain and a moderate breeze of 21 kph from the east.

31
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
UV10
UV index (Very High)
36
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
21
kph wind from E

Gros Islet weather for Wednesday 20th May 2026

Expect isolated thunderstorms in Gros Islet, St Lucia with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 30% chance of some rain and a moderate breeze of 22 kph from the east.

30
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
UV11
UV index (Extreme)
30
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
22
kph wind from E

Gros Islet weather for Thursday 21st May 2026

Expect broken clouds in Gros Islet, St Lucia with a maximum temperature of 31°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 gentle breeze of 19 kph from the east.

31
°C maximum temperature
27
°C minimum temperature
broken clouds
6
hours of sunshine
UV11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
19
kph wind from E

Gros Islet weather for Friday 22nd May 2026

Expect broken clouds in Gros Islet, St Lucia with a maximum temperature of 31°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 gentle breeze of 19 kph from the east.

31
°C maximum temperature
27
°C minimum temperature
broken clouds
7
hours of sunshine
UV11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
19
kph wind from E

Gros Islet weather for Saturday 23rd May 2026

Expect isolated thunderstorms in Gros Islet, St Lucia with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 56% chance of some rain and a moderate breeze of 21 kph from the east.