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.

Sunday
16th Aug
31

28

6

9
Monday
17th Aug
30

27

6

11
Tuesday
18th Aug
32

27

6

9
Wednesday
19th Aug
32

28

7

11
Thursday
20th Aug
31

27

7

11

5-day weather forecast updated at 04:02 on Sunday 16th August 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 Sunday 16th August 2026

Expect isolated thunderstorms in Gros Islet, St Lucia with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 36% chance of some rain and a moderate breeze of 20 kph from the east.

31
°C maximum temperature
28
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
9
UV index (Very High)
36
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
20
kph wind from E

Gros Islet weather for Monday 17th August 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 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 75% chance of some rain and a gentle breeze of 16 kph from the east.

30
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
75
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
16
kph wind from E

Gros Islet weather for Tuesday 18th August 2026

Expect isolated thunderstorms in Gros Islet, St Lucia with a maximum temperature of 32°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 64% chance of some rain and a light breeze of 9 kph from the east.

32
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
9
UV index (Very High)
64
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
9
kph wind from E

Gros Islet weather for Wednesday 19th August 2026

Expect isolated thunderstorms in Gros Islet, St Lucia with a maximum temperature of 32°C, high levels of heat & humidity, maximum UV of 11+ (Extreme) and 7 hours of bright sunshine. There are 20-30 mm of rainfall expected with 72% chance of some rain and a gentle breeze of 15 kph from the east.

32
°C maximum temperature
28
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
11
UV index (Extreme)
72
% chance of some rain
<30
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from E

Gros Islet weather for Thursday 20th August 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 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 44% chance of some rain and a moderate breeze of 20 kph from the east.