05.09
sat
sat
Day
88°F
W 14 mph
Precip.
15%
15%
Night
82°F
W 12 mph
Precip.
28%
28%
06.09
sun
sun
Day
86°F
W 15 mph
Precip.
5%
5%
Night
82°F
W 15 mph
Precip.
21%
21%
07.09
mon
mon
Day
86°F
W 16 mph
Precip.
4%
4%
Night
82°F
W 17 mph
Precip.
22%
22%
08.09
tue
tue
Day
86°F
W 18 mph
Precip.
15%
15%
Night
81°F
W 15 mph
Precip.
22%
22%
09.09
wed
wed
Day
86°F
W 18 mph
Precip.
15%
15%
Night
81°F
W 16 mph
Precip.
36%
36%
10.09
thu
thu
Day
82°F
W 17 mph
Precip.
36%
36%
Night
81°F
W 17 mph
Precip.
52%
52%
11.09
fri
fri
Day
82°F
W 19 mph
Precip.
65%
65%
Night
79°F
NW 13 mph
Precip.
68%
68%
12.09
sat
sat
Day
81°F
W 17 mph
Precip.
33%
33%
Night
81°F
W 17 mph
Precip.
50%
50%
13.09
sun
sun
Day
82°F
W 17 mph
Precip.
36%
36%
Night
81°F
W 16 mph
Precip.
27%
27%
14.09
mon
mon
Day
82°F
W 15 mph
Precip.
37%
37%
Night
81°F
W 16 mph
Precip.
44%
44%
15.09
tue
tue
Day
81°F
W 14 mph
Precip.
65%
65%
Night
81°F
W 15 mph
Precip.
63%
63%
16.09
wed
wed
Day
79°F
NW 13 mph
Precip.
66%
66%
Night
79°F
W 16 mph
Precip.
56%
56%
17.09
thu
thu
Day
77°F
SW 10 mph
Precip.
86%
86%
Night
75°F
W 11 mph
Precip.
55%
55%
18.09
fri
fri
Day
81°F
W 13 mph
Precip.
22%
22%
Night
81°F
W 17 mph
Precip.
23%
23%
sea water
temperature
temperature
| Castries |
monthly
weather
weather
| Castries |
current
weather
weather
| Castries |
7 days
forecast
forecast
| Castries |
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.
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
Castries on a weather map
24 Hours Forecast
Castries
Local time: 03:34
September 05, saturday
0600
81°F
NW
9 mph
9 mph
0900
84°F
W
12 mph
12 mph
1200
88°F
W
14 mph
14 mph
1500
86°F
W
13 mph
13 mph
1800
82°F
W
12 mph
12 mph
2100
82°F
W
12 mph
12 mph
September 06, sunday
0000
82°F
W
12 mph
12 mph
0300
81°F
W
12 mph
12 mph
