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
31st Dec
29

25

6

9
Thursday
1st Jan
29

25

7

9
Friday
2nd Jan
28

25

7

8
Saturday
3rd Jan
29

25

6

9
Sunday
4th Jan
28

25

6

9

5-day weather forecast updated at 04:00 on Tuesday 30th December 2025 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 31st December 2025

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 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

Castries weather for Thursday 1st January 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 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the east.

29
°C maximum temperature
25
°C minimum temperature
broken clouds
7
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
13
kph wind from E

Castries weather for Friday 2nd January 2026

Expect broken clouds in Castries, St Lucia with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the east.

28
°C maximum temperature
25
°C minimum temperature
broken clouds
7
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
10
kph wind from E

Castries weather for Saturday 3rd January 2026

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
12
kph wind from E

Castries weather for Sunday 4th January 2026

Expect scattered clouds in Castries, St Lucia with a maximum temperature of 28°C, low 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 light breeze of 11 kph from the east.