Castries weather live forecast

Today's maximum temperature in Castries is expected to be 84°F. Select a day from the live weather forecast for Castries, St Lucia for more weather parameters.

Thursday
19th Feb
84

77

6

11
Friday
20th Feb
84

77

7

11
Saturday
21st Feb
86

77

6

11
Sunday
22nd Feb
84

77

7

11
Monday
23rd Feb
86

77

6

11

5-day weather forecast updated at 04:01 on Thursday 19th 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 Thursday 19th February 2026

Expect broken clouds in Castries, St Lucia with a maximum temperature of 84°F, 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 12 mph from the east.

84
°F maximum temperature
77
°F minimum temperature
broken clouds
6
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
12
mph wind from E

Castries weather for Friday 20th February 2026

Expect broken clouds in Castries, St Lucia with a maximum temperature of 84°F, 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 12 mph from the east.

84
°F maximum temperature
77
°F minimum temperature
broken clouds
7
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
12
mph wind from E

Castries weather for Saturday 21st February 2026

Expect broken clouds in Castries, St Lucia with a maximum temperature of 86°F, 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 13 mph from the east.

86
°F maximum temperature
77
°F minimum temperature
broken clouds
6
hours of sunshine
11
UV index (Extreme)
0
mm of rainfall expected
M
moderate heat & humidity
13
mph wind from E

Castries weather for Sunday 22nd February 2026

Expect scattered clouds in Castries, St Lucia with a maximum temperature of 84°F, 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 12 mph from the east.