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.

Friday
18th Sep
31

27

7

11
Saturday
19th Sep
31

27

7

11
Sunday
20th Sep
32

27

7

10
Monday
21st Sep
31

27

6

11
Tuesday
22nd Sep
31

27

7

11

5-day weather forecast updated at 04:03 on Friday 18th September 2026 GMT

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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 Friday 18th September 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 13 kph from the east.

31
°C maximum temperature
27
°C minimum temperature
broken clouds
7
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
13
kph wind from E

Gros Islet weather for Saturday 19th September 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 34% chance of some rain and a light breeze of 9 kph from the south-east.

31
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
11
UV index (Extreme)
34
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
9
kph wind from SE

Gros Islet weather for Sunday 20th September 2026

Expect isolated thunderstorms in Gros Islet, St Lucia with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 34% chance of some rain and a light breeze of 10 kph from the south-east.

32
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
10
UV index (Very High)
34
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
10
kph wind from SE

Gros Islet weather for Monday 21st September 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 light breeze of 12 kph from the east.

31
°C maximum temperature
27
°C minimum temperature
broken clouds
6
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
12
kph wind from E

Gros Islet weather for Tuesday 22nd September 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 gentle breeze of 14 kph from the east.