20.03
fri
fri
Day

79°F
S 22 mph
Precip.
0%
0%
Night

77°F
S 21 mph
Precip.
0%
0%
21.03
sat
sat
Day

77°F
SW 19 mph
Precip.
0%
0%
Night

77°F
SW 19 mph
Precip.
0%
0%
22.03
sun
sun
Day

75°F
SW 21 mph
Precip.
0%
0%
Night

77°F
W 16 mph
Precip.
0%
0%
23.03
mon
mon
Day

77°F
SW 17 mph
Precip.
0%
0%
Night

77°F
SW 17 mph
Precip.
0%
0%
24.03
tue
tue
Day

77°F
SW 20 mph
Precip.
86%
86%
Night

79°F
SW 19 mph
Precip.
0%
0%
25.03
wed
wed
Day

79°F
W 21 mph
Precip.
0%
0%
Night

79°F
W 18 mph
Precip.
0%
0%
26.03
thu
thu
Day

79°F
W 21 mph
Precip.
25%
25%
Night

79°F
W 16 mph
Precip.
100%
100%
27.03
fri
fri
Day

79°F
W 19 mph
Precip.
100%
100%
Night

79°F
SW 18 mph
Precip.
59%
59%
28.03
sat
sat
Day

79°F
W 19 mph
Precip.
100%
100%
Night

79°F
W 22 mph
Precip.
45%
45%
29.03
sun
sun
Day

79°F
W 17 mph
Precip.
100%
100%
Night

79°F
W 17 mph
Precip.
100%
100%
30.03
mon
mon
Day

79°F
W 12 mph
Precip.
51%
51%
Night

79°F
W 11 mph
Precip.
100%
100%
31.03
tue
tue
Day

79°F
W 16 mph
Precip.
100%
100%
Night

79°F
W 13 mph
Precip.
100%
100%
01.04
wed
wed
Day

79°F
W 14 mph
Precip.
100%
100%
Night

79°F
W 12 mph
Precip.
100%
100%
02.04
thu
thu
Day

79°F
W 21 mph
Precip.
100%
100%
Night

79°F
W 14 mph
Precip.
0%
0%
sea water
temperature
temperature
| Grand Cayman |
monthly
weather
weather
| Grand Cayman |
current
weather
weather
| Grand Cayman |
7 days
forecast
forecast
| Grand Cayman |
Sea water temperature in March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 80.7°F. The highest and lowest sea temperatures during the month were 81.5°F and 79.9°F.
Sea water temperature in April, °F
Show year:
2025
2024
2023
The average sea water temperature in April of 2025 was 82.0°F. The highest and lowest sea temperatures during the month were 82.4°F and 81.7°F.
Air temperature in Grand Cayman, °F
Precipitation total in Grand Cayman, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Grand Cayman
Grand Cayman on a weather map
Places in Cayman Islands:
Name
°F
24 Hours Forecast
Grand Cayman
Local time: 13:28
March 20, friday
1500

81°F
S
22 mph
22 mph
1800

81°F
S
21 mph
21 mph
2100

79°F
S
19 mph
19 mph
March 21, saturday
0000

77°F
S
21 mph
21 mph
0300

77°F
SW
21 mph
21 mph
0600

75°F
SW
24 mph
24 mph
0900

75°F
SW
22 mph
22 mph
1200

77°F
SW
19 mph
19 mph

























