St Lucia weather live forecast

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

Friday
23rd Jan
84

77

5

8
Saturday
24th Jan
84

77

4

9
Sunday
25th Jan
84

77

6

9
Monday
26th Jan
84

77

6

9
Tuesday
27th Jan
84

77

6

9

5-day weather forecast updated at 04:00 on Friday 23rd January 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.

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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.

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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 Friday 23rd January 2026

Expect sunshine and showers in St Lucia with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 68% chance of some rain and a light breeze of 7 mph from the east.

84
°F maximum temperature
77
°F minimum temperature
sunshine and showers
5
hours of sunshine
8
UV index (Very High)
68
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
7
mph wind from E

St Lucia weather for Saturday 24th January 2026

Expect isolated thunderstorms in St Lucia with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 62% chance of some rain and a gentle breeze of 11 mph from the east.

84
°F maximum temperature
77
°F minimum temperature
isolated thunderstorms
4
hours of sunshine
9
UV index (Very High)
62
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
11
mph wind from E

St Lucia weather for Sunday 25th January 2026

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

84
°F maximum temperature
77
°F minimum temperature
broken clouds
6
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
12
mph wind from E

St Lucia weather for Monday 26th January 2026

Expect isolated thunderstorms in St Lucia with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 53% chance of some rain and a moderate breeze of 13 mph from the east.

84
°F maximum temperature
77
°F minimum temperature
isolated thunderstorms
6
hours of sunshine
9
UV index (Very High)
53
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
13
mph wind from E

St Lucia weather for Tuesday 27th January 2026

Expect isolated thunderstorms in St Lucia with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 49% chance of some rain and a gentle breeze of 11 mph from the east.