World Resorts Cayman Islands Grand Cayman Weather

Grand Cayman Sea Temperature in May

Average sea water temperature in May:
+83.2°F
Minimum sea water temperature in May: 86.4°F
Maximum sea water temperature in May: 80.8°F

Daily sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 83.9°F. The highest and lowest sea temperatures during the month were 84.7°F and 82.8°F.

Monthly sea water temperature in Grand Cayman, °F

Which Cayman Islands resorts have warmest sea in May?

Place name May 2026 May 2025
Little Cayman 84.1°F 84.0°F
Grand Cayman 83.9°F 83.8°F
Cayman Brac 83.9°F 83.9°F
George Town 83.9°F 83.8°F

Best time for vacation in Grand Cayman

Sunniest months:
July 11 days
May 10 days
March 10 days
Warmest months:
August 87.1 °F
July 87.0 °F
September 86.9 °F
Warmest sea temp:
September 86.1 °F
August 85.9 °F
October 85.5 °F
Coldest months:
January 80.1 °F
February 80.3 °F
March 80.9 °F
Rainiest months:
October 8 days
May 5 days
November 5 days
Windiest months:
December 16.8 mph
November 16.1 mph
January 15.7 mph

Grand Cayman on a weather map

Current weather
14:38
Grand Cayman
+82°F
NW 11 mph
Feels like: +90°F
Precip.: 100%
Places in Cayman Islands:
Name
°F
Grand Cayman
+82°F
George Town
+82°F
Cayman Brac
+82°F
Little Cayman
+82°F
24 Hours Forecast
Grand Cayman
Local time: 14:38
May 22, friday
1500
82°F
NW
11 mph
1800
82°F
NW
11 mph
2100
82°F
W
11 mph
May 23, saturday
0000
82°F
W
12 mph
0300
82°F
W
11 mph
0600
82°F
W
11 mph
0900
82°F
W
12 mph
1200
82°F
W
15 mph
Units of measurement: °C / °F