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
9th Jan
84

77

6

9
Saturday
10th Jan
84

77

6

9
Sunday
11th Jan
84

75

6

9
Monday
12th Jan
82

77

6

9
Tuesday
13th Jan
84

77

6

9

5-day weather forecast updated at 04:00 on Friday 9th 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 9th 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 gentle breeze of 10 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
10
mph wind from E

St Lucia weather for Saturday 10th January 2026

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
9
mph wind from NE

St Lucia weather for Sunday 11th 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 58% chance of some rain and a gentle breeze of 9 mph from the east.

84
°F maximum temperature
75
°F minimum temperature
isolated thunderstorms
6
hours of sunshine
9
UV index (Very High)
58
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
9
mph wind from E

St Lucia weather for Monday 12th January 2026

Expect sunshine and showers in St Lucia with a maximum temperature of 82°F, low 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 48% chance of some rain and a gentle breeze of 8 mph from the east.

82
°F maximum temperature
77
°F minimum temperature
sunshine and showers
6
hours of sunshine
9
UV index (Very High)
48
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
8
mph wind from E

St Lucia weather for Tuesday 13th 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 gentle breeze of 10 mph from the east.