Measurements:
°C
°F
CURRENT WEATHER
15:32
Castries
84°F
W 17 mph
Feels like: 90°F
Precip: 100%
World Resorts Saint Lucia Castries Weather

7 Day Weather Forecast

05.25
mon
DAY
84°F
W 17 mph
precip
63%
NIGHT
82°F
W 19 mph
precip
71%
05.26
tue
DAY
86°F
W 18 mph
precip
0%
NIGHT
82°F
W 15 mph
precip
100%
05.27
wed
DAY
86°F
W 16 mph
precip
89%
NIGHT
82°F
W 16 mph
precip
65%
05.28
thu
DAY
88°F
W 14 mph
precip
100%
NIGHT
84°F
W 16 mph
precip
0%
05.29
fri
DAY
88°F
W 17 mph
precip
63%
NIGHT
84°F
W 14 mph
precip
76%
05.30
sat
DAY
88°F
W 17 mph
precip
69%
NIGHT
82°F
W 17 mph
precip
100%
05.31
sun
DAY
86°F
W 17 mph
precip
76%
NIGHT
84°F
W 17 mph
precip
56%

Castries Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Castries was 28.0°F. The maximum and minimum values were 27.7°F and 28.1°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
January 15 mph
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