World Resorts Saint Lucia Castries Weather

Castries 14 Days Forecast

25.09
fri
Day
86°F
W 17 mph
Precip.
18%
Night
82°F
W 16 mph
Precip.
23%
26.09
sat
Day
86°F
W 16 mph
Precip.
19%
Night
81°F
W 15 mph
Precip.
18%
27.09
sun
Day
86°F
W 14 mph
Precip.
25%
Night
81°F
W 14 mph
Precip.
71%
28.09
mon
Day
86°F
W 15 mph
Precip.
26%
Night
82°F
W 14 mph
Precip.
17%
29.09
tue
Day
86°F
W 15 mph
Precip.
5%
Night
81°F
W 13 mph
Precip.
27%
30.09
wed
Day
86°F
W 15 mph
Precip.
14%
Night
81°F
W 14 mph
Precip.
23%
01.10
thu
Day
86°F
W 17 mph
Precip.
14%
Night
82°F
W 16 mph
Precip.
20%
02.10
fri
Day
82°F
W 14 mph
Precip.
21%
Night
81°F
W 11 mph
Precip.
22%
03.10
sat
Day
86°F
W 15 mph
Precip.
17%
Night
81°F
W 12 mph
Precip.
20%
04.10
sun
Day
86°F
W 15 mph
Precip.
11%
Night
81°F
W 14 mph
Precip.
31%
05.10
mon
Day
86°F
W 13 mph
Precip.
14%
Night
81°F
W 11 mph
Precip.
46%
06.10
tue
Day
86°F
W 12 mph
Precip.
12%
Night
81°F
W 9 mph
Precip.
15%
07.10
wed
Day
86°F
W 11 mph
Precip.
4%
Night
81°F
W 10 mph
Precip.
19%
08.10
thu
Day
86°F
W 14 mph
Precip.
23%
Night
82°F
W 14 mph
Precip.
13%

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 84.9°F. The highest and lowest sea temperatures during the month were 85.3°F and 84.4°F.

Sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 85.3°F. The highest and lowest sea temperatures during the month were 86.2°F and 84.6°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 85.7 °F
Warmest sea temp:
September 84.9 °F
October 84.6 °F
August 83.9 °F
Coldest months:
January 81.8 °F
February 81.9 °F
March 82.1 °F
Rainiest months:
August 7 days
October 5 days
September 5 days
Windiest months:
June 15.8 mph
February 15.4 mph
July 15.0 mph

Castries on a weather map

Current weather
09:43
Castries
+84°F
W 16 mph
Feels like: +91°F
Precip.: 24%
Places in Saint Lucia:
Name
°F
Vieux Fort
+82°F
Castries
+84°F
24 Hours Forecast
Castries
Local time: 09:43
September 25, friday
1200
86°F
W
17 mph
1500
86°F
W
14 mph
1800
82°F
W
14 mph
2100
82°F
W
14 mph
September 26, saturday
0000
82°F
W
16 mph
0300
82°F
W
14 mph
0600
81°F
W
14 mph
0900
84°F
W
16 mph
Units of measurement: °C / °F