St Lucia weather live forecast

Today's maximum temperature in St Lucia is expected to be 30°C. Select a day from the live weather forecast for St Lucia (Castries) for more weather parameters.

Tuesday
17th Feb
30

25

6

11
Wednesday
18th Feb
29

25

6

9
Thursday
19th Feb
30

25

7

10
Friday
20th Feb
29

25

6

11
Saturday
21st Feb
30

25

7

11

5-day weather forecast updated at 04:01 on Tuesday 17th February 2026 GMT

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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 Tuesday 17th February 2026

Expect broken clouds in 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 0 mm of rainfall expected and a gentle breeze of 18 kph from the east.

30
°C maximum temperature
25
°C minimum temperature
broken clouds
6
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
18
kph wind from E

St Lucia weather for Wednesday 18th February 2026

Expect broken clouds in St Lucia with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the east.

29
°C maximum temperature
25
°C minimum temperature
broken clouds
6
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
16
kph wind from E

St Lucia weather for Thursday 19th February 2026

Expect sunshine and showers in St Lucia with a maximum temperature of 30°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 35% chance of some rain and a gentle breeze of 19 kph from the east.

30
°C maximum temperature
25
°C minimum temperature
sunshine and showers
7
hours of sunshine
10
UV index (Very High)
35
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
19
kph wind from E

St Lucia weather for Friday 20th February 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 21 kph from the east.

29
°C maximum temperature
25
°C minimum temperature
broken clouds
6
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
21
kph wind from E

St Lucia weather for Saturday 21st February 2026

Expect scattered clouds in 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 0 mm of rainfall expected and a moderate breeze of 20 kph from the east.