Measurements:
°C
°F
CURRENT WEATHER
10:10
Castries
86°F
W 14 mph
Feels like: 94°F
Precip: 8%
World Resorts Saint Lucia Castries Weather

7 Day Weather Forecast

08.19
wed
DAY
88°F
W 14 mph
precip
5%
NIGHT
84°F
W 15 mph
precip
33%
08.20
thu
DAY
86°F
W 19 mph
precip
16%
NIGHT
84°F
W 15 mph
precip
20%
08.21
fri
DAY
88°F
W 16 mph
precip
4%
NIGHT
84°F
W 16 mph
precip
23%
08.22
sat
DAY
88°F
W 15 mph
precip
16%
NIGHT
84°F
W 16 mph
precip
29%
08.23
sun
DAY
88°F
W 17 mph
precip
19%
NIGHT
84°F
W 17 mph
precip
19%
08.24
mon
DAY
88°F
W 19 mph
precip
11%
NIGHT
84°F
SW 16 mph
precip
17%
08.25
tue
DAY
88°F
SW 11 mph
precip
7%
NIGHT
82°F
NW 3 mph
precip
27%

Castries Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Castries was 28.6°F. The maximum and minimum values were 28.4°F and 28.9°F respectively.

Castries on the Weather Map

Best Time to Visit Castries
The most sunny months:
December 4 days
March 4 days
September 4 days
The most warm months:
September 90.9 °F
October 90.0 °F
August 89.8 °F
Warmest sea temperature:
September 88.7 °F
October 88.4 °F
August 87.7 °F
The most cold months:
January 85.3 °F
February 85.4 °F
March 85.7 °F
The most rainy months:
August 7 days
October 5 days
September 5 days
The most windy months:
June 16 mph
February 15 mph
July 15 mph
more details