World Resorts Cayman Islands Grand Cayman Weather

Grand Cayman sea water temperature

Current sea water temperature:
+82.4°F
Minimum sea water temperature in December: 84.7°F
Maximum sea water temperature in December: 80.6°F
Average sea water temperature in December: 82.4°F

Sea water temperature for the last 10 days:

December 21 82.4°F December 16 82.8°F
December 20 82.4°F December 15 83.1°F
December 19 82.4°F December 14 83.3°F
December 18 82.8°F December 13 82.9°F
December 17 82.6°F December 12 82.8°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:
2024
2023
2022

The average sea water temperature in September of 2024 was 86.9°F. The highest and lowest sea temperatures during the month were 87.6°F and 86.0°F.

Sea water temperature in August, °F

Show year:
2024
2023
2022

The average sea water temperature in August of 2024 was 86.9°F. The highest and lowest sea temperatures during the month were 87.6°F and 86.2°F.

Sea water temperature in October, °F

Show year:
2024
2023
2022

The average sea water temperature in October of 2024 was 85.6°F. The highest and lowest sea temperatures during the month were 86.5°F and 84.7°F.

Best time for vacation in Grand Cayman

Sunniest months:
July 11 days
September 10 days
March 10 days
Warmest months:
August 87.1 °F
July 87.1 °F
September 86.9 °F
Warmest sea temp:
September 86.0 °F
August 85.8 °F
October 85.5 °F
Coldest months:
January 80.2 °F
February 80.4 °F
March 80.8 °F
Rainiest months:
October 8 days
August 5 days
June 5 days
Windiest months:
December 16.7 mph
November 16.1 mph
January 15.6 mph

Grand Cayman on a weather map

Grand Cayman
+77°F
SW 19 mph
Feels like: +82°F
Precip.: 0%
Places in Cayman Islands:
Name
°F
+77°F
+77°F
+75°F
+75°F
24 Hours Forecast
Grand Cayman
Local time: 09:59
December 21, saturday
1200
77°F
S
17 mph
1500
77°F
S
18 mph
1800
77°F
S
19 mph
2100
77°F
S
18 mph
December 22, sunday
0000
77°F
S
16 mph
0300
77°F
S
17 mph
0600
77°F
S
17 mph
0900
77°F
S
19 mph
Units of measurement: °C / °F