World Resorts Saint Lucia Castries Weather

Castries 14 Days Forecast

29.12
mon
Day
79°F
SW 17 mph
Precip.
60%
Night
77°F
SW 16 mph
Precip.
85%
30.12
tue
Day
79°F
W 17 mph
Precip.
100%
Night
77°F
W 15 mph
Precip.
100%
31.12
wed
Day
81°F
W 17 mph
Precip.
65%
Night
77°F
W 14 mph
Precip.
0%
01.01
thu
Day
81°F
W 16 mph
Precip.
60%
Night
77°F
W 14 mph
Precip.
100%
02.01
fri
Day
81°F
W 14 mph
Precip.
23%
Night
77°F
W 12 mph
Precip.
41%
03.01
sat
Day
81°F
W 14 mph
Precip.
100%
Night
77°F
W 12 mph
Precip.
59%
04.01
sun
Day
81°F
W 16 mph
Precip.
21%
Night
75°F
W 8 mph
Precip.
74%
05.01
mon
Day
81°F
W 11 mph
Precip.
30%
Night
75°F
W 8 mph
Precip.
81%
06.01
tue
Day
81°F
W 13 mph
Precip.
49%
Night
77°F
W 7 mph
Precip.
0%
07.01
wed
Day
81°F
W 7 mph
Precip.
100%
Night
75°F
W 7 mph
Precip.
100%
08.01
thu
Day
81°F
W 12 mph
Precip.
100%
Night
77°F
W 14 mph
Precip.
65%
09.01
fri
Day
81°F
W 14 mph
Precip.
76%
Night
79°F
W 17 mph
Precip.
69%
10.01
sat
Day
81°F
W 19 mph
Precip.
74%
Night
77°F
W 19 mph
Precip.
100%
11.01
sun
Day
81°F
W 21 mph
Precip.
100%
Night
77°F
W 21 mph
Precip.
100%

Sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 82.3°F. The highest and lowest sea temperatures during the month were 82.9°F and 81.7°F.

Sea water temperature in January, °F

Show year:
2025
2024
2023

The average sea water temperature in January of 2025 was 82.2°F. The highest and lowest sea temperatures during the month were 82.8°F and 81.7°F.

Air temperature in Castries, °F

Precipitation total in Castries, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Castries

Sunniest months:
December 4 days
March 4 days
September 4 days
Warmest months:
September 86.8 °F
October 86.0 °F
August 85.8 °F
Warmest sea temp:
September 84.8 °F
October 84.6 °F
August 84.0 °F
Coldest months:
January 81.9 °F
February 81.9 °F
March 82.2 °F
Rainiest months:
August 7 days
October 5 days
September 5 days
Windiest months:
June 15.7 mph
February 15.4 mph
January 15.1 mph

Castries on a weather map

Current weather
10:47
Castries
+79°F
SW 17 mph
Feels like: +82°F
Precip.: 60%
Places in Saint Lucia:
Name
°F
Vieux Fort
+81°F
Castries
+79°F
24 Hours Forecast
Castries
Local time: 10:47
December 29, monday
1200
79°F
SW
17 mph
1500
79°F
SW
17 mph
1800
79°F
W
16 mph
2100
79°F
SW
16 mph
December 30, tuesday
0000
77°F
SW
16 mph
0300
77°F
SW
15 mph
0600
77°F
SW
16 mph
0900
79°F
W
17 mph
Units of measurement: °C / °F