Castries weather live forecast

Today's maximum temperature in Castries is expected to be 86°F. Select a day from the live weather forecast for Castries, St Lucia for more weather parameters.

Monday
6th Apr
86

79

4

11
Tuesday
7th Apr
86

79

5

11
Wednesday
8th Apr
86

79

6

11
Thursday
9th Apr
86

77

7

11
Friday
10th Apr
86

77

5

11

5-day weather forecast updated at 04:00 on Monday 6th April 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 Monday 6th April 2026

Expect isolated thunderstorms in Castries, St Lucia with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 26% chance of some rain and a moderate breeze of 14 mph from the east.

86
°F maximum temperature
79
°F minimum temperature
isolated thunderstorms
4
hours of sunshine
11
UV index (Extreme)
26
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
14
mph wind from E

Castries weather for Tuesday 7th April 2026

Expect isolated thunderstorms in Castries, St Lucia with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 31% chance of some rain and a moderate breeze of 13 mph from the east.

86
°F maximum temperature
79
°F minimum temperature
isolated thunderstorms
5
hours of sunshine
11
UV index (Extreme)
31
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
13
mph wind from E

Castries weather for Wednesday 8th April 2026

Expect isolated thunderstorms 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 0-2 mm of rainfall expected with 26% chance of some rain and a gentle breeze of 12 mph from the east.

86
°F maximum temperature
79
°F minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
26
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
12
mph wind from E

Castries weather for Thursday 9th April 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 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the east.

86
°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
11
mph wind from E

Castries weather for Friday 10th April 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 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the east.