18.08
tue
tue
Day

84°F
W 12 mph
Precip.
21%
21%
Night

84°F
SW 9 mph
Precip.
12%
12%
19.08
wed
wed
Day

84°F
W 12 mph
Precip.
19%
19%
Night

84°F
SW 7 mph
Precip.
22%
22%
20.08
thu
thu
Day

84°F
W 9 mph
Precip.
8%
8%
Night

84°F
W 12 mph
Precip.
6%
6%
21.08
fri
fri
Day

86°F
W 12 mph
Precip.
7%
7%
Night

84°F
SW 6 mph
Precip.
18%
18%
22.08
sat
sat
Day

84°F
W 6 mph
Precip.
6%
6%
Night

84°F
SW 5 mph
Precip.
7%
7%
23.08
sun
sun
Day

84°F
SW 11 mph
Precip.
7%
7%
Night

84°F
NW 6 mph
Precip.
7%
7%
24.08
mon
mon
Day

84°F
W 6 mph
Precip.
5%
5%
Night

84°F
W 7 mph
Precip.
11%
11%
25.08
tue
tue
Day

84°F
W 8 mph
Precip.
8%
8%
Night

84°F
NW 10 mph
Precip.
17%
17%
26.08
wed
wed
Day

84°F
W 13 mph
Precip.
18%
18%
Night

84°F
SW 16 mph
Precip.
8%
8%
27.08
thu
thu
Day

86°F
W 12 mph
Precip.
15%
15%
Night

84°F
W 12 mph
Precip.
20%
20%
28.08
fri
fri
Day

86°F
W 14 mph
Precip.
6%
6%
Night

84°F
W 9 mph
Precip.
8%
8%
29.08
sat
sat
Day

84°F
SW 11 mph
Precip.
12%
12%
Night

84°F
NW 9 mph
Precip.
16%
16%
30.08
sun
sun
Day

84°F
SW 10 mph
Precip.
27%
27%
Night

84°F
NW 11 mph
Precip.
66%
66%
31.08
mon
mon
Day

84°F
W 9 mph
Precip.
9%
9%
Night

84°F
NW 6 mph
Precip.
10%
10%
sea water
temperature
temperature
| Cayman Brac |
monthly
weather
weather
| Cayman Brac |
current
weather
weather
| Cayman Brac |
7 days
forecast
forecast
| Cayman Brac |
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 87.3°F. The highest and lowest sea temperatures during the month were 87.8°F and 86.4°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 87.6°F. The highest and lowest sea temperatures during the month were 88.2°F and 87.1°F.
Air temperature in Cayman Brac, °F
Precipitation total in Cayman Brac, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Cayman Brac
Cayman Brac on a weather map
Places in Cayman Islands:
Name
°F
24 Hours Forecast
Cayman Brac
Local time: 06:17
August 18, tuesday
0900

84°F
SW
14 mph
14 mph
1200

84°F
W
12 mph
12 mph
1500

86°F
W
10 mph
10 mph
1800

84°F
W
5 mph
5 mph
2100

84°F
W
2 mph
2 mph
August 19, wednesday
0000

84°F
SW
9 mph
9 mph
0300

84°F
SW
12 mph
12 mph
0600

84°F
SW
16 mph
16 mph


























