Current sea water temperature:
+82.2°F
| Minimum sea water temperature in April: | 84.4°F |
| Maximum sea water temperature in April: | 79.9°F |
| Average sea water temperature in April: | 81.7°F |
| more information | |
14 days
forecast
forecast
| Grand Cayman |
monthly
weather
weather
| Grand Cayman |
Sea water temperature for the last 10 days:
| April 9 | 82.2°F | April 4 | 80.4°F |
| April 8 | 81.3°F | April 3 | 80.1°F |
| April 7 | 81.0°F | April 2 | 80.4°F |
| April 6 | 80.8°F | April 1 | 80.4°F |
| April 5 | 80.6°F | March 31 | 80.2°F |
Monthly sea water temperature, °F
When is the warmest sea in Grand Cayman?
Based on the data about daily sea water temperature for the last three years the warmest sea in Grand Cayman was noticed in September, August and October.
Monthly Sea Temperatures in Grand Cayman, °F
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 87.4°F. The highest and lowest sea temperatures during the month were 87.8°F and 86.9°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 86.9°F. The highest and lowest sea temperatures during the month were 87.4°F and 85.8°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 86.6°F. The highest and lowest sea temperatures during the month were 88.3°F and 85.3°F.
current
weather
weather
| Grand Cayman |
weather in
April
April
| Grand Cayman |
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: 23:01
April 10, friday
0000
79°F
SW
9 mph
9 mph
0300
79°F
SW
12 mph
12 mph
0600
79°F
SW
14 mph
14 mph
0900
79°F
SW
14 mph
14 mph
1200
79°F
SW
12 mph
12 mph
1500
79°F
SW
12 mph
12 mph
1800
79°F
SW
12 mph
12 mph
2100
79°F
SW
11 mph
11 mph
