Current sea water temperature:
+81.5°F
| Minimum sea water temperature in January: | 82.8°F |
| Maximum sea water temperature in January: | 79.5°F |
| Average sea water temperature in January: | 81.0°F |
| more information | |
14 days
forecast
forecast
| Castries |
monthly
weather
weather
| Castries |
Sea water temperature for the last 10 days:
| January 15 | 81.5°F | January 10 | 81.3°F |
| January 14 | 81.3°F | January 9 | 81.3°F |
| January 13 | 81.3°F | January 8 | 81.5°F |
| January 12 | 81.5°F | January 7 | 81.3°F |
| January 11 | 81.5°F | January 6 | 81.3°F |
Monthly sea water temperature, °F
When is the warmest sea in Castries?
Based on the data about daily sea water temperature for the last three years the warmest sea in Castries was noticed in September, October and August.
Monthly Sea Temperatures in Castries, °F
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 85.5°F. The highest and lowest sea temperatures during the month were 85.8°F and 84.9°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.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 84.5°F. The highest and lowest sea temperatures during the month were 85.1°F and 83.8°F.
current
weather
weather
| Castries |
weather in
January
January
| Castries |
Best time for vacation in Castries
Castries on a weather map
24 Hours Forecast
Castries
Local time: 10:25
January 15, thursday
1200
82°F
W
17 mph
17 mph
1500
81°F
W
17 mph
17 mph
1800
79°F
W
17 mph
17 mph
2100
79°F
W
16 mph
16 mph
January 16, friday
0000
77°F
W
15 mph
15 mph
0300
77°F
W
16 mph
16 mph
0600
79°F
W
15 mph
15 mph
0900
81°F
W
18 mph
18 mph
