Castries weather live forecast

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

Wednesday
18th Feb
29

26

6

9
Thursday
19th Feb
30

25

7

11
Friday
20th Feb
30

25

8

11
Saturday
21st Feb
29

25

7

11
Sunday
22nd Feb
29

25

6

11

5-day weather forecast updated at 04:01 on Wednesday 18th February 2026 GMT

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

Castries weather forecast by day

Below are the detailed weather forecasts for Castries for the next 5 days.

Castries weather for Wednesday 18th February 2026

Expect broken clouds in Castries, 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 15 kph from the east.

29
°C maximum temperature
26
°C minimum temperature
broken clouds
6
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from E

Castries weather for Thursday 19th February 2026

Expect broken clouds in Castries, 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 gentle breeze of 18 kph from the east.

30
°C maximum temperature
25
°C minimum temperature
broken clouds
7
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
18
kph wind from E

Castries weather for Friday 20th February 2026

Expect broken clouds in Castries, St Lucia with a maximum temperature of 30°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 22 kph from the east.

30
°C maximum temperature
25
°C minimum temperature
broken clouds
8
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
22
kph wind from E

Castries weather for Saturday 21st February 2026

Expect scattered clouds in Castries, 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 20 kph from the east.

29
°C maximum temperature
25
°C minimum temperature
scattered clouds
7
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
20
kph wind from E

Castries weather for Sunday 22nd February 2026

Expect sunshine and showers in Castries, 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 0-2 mm of rainfall expected with 22% chance of some rain and a gentle breeze of 19 kph from the east.