World Resorts Cayman Islands Grand Cayman Weather

Grand Cayman Sea Temperature in January

Average sea water temperature in January:
+81.0°F
Minimum sea water temperature in January: 82.9°F
Maximum sea water temperature in January: 77.7°F

Daily sea water temperature in January, °F

Show year:
2026
2025
2024

The average sea water temperature in January of 2026 was 81.5°F. The highest and lowest sea temperatures during the month were 82.0°F and 81.1°F.

Monthly sea water temperature in Grand Cayman, °F

Which Cayman Islands resorts have warmest sea in January?

Place name January 2026 January 2025
George Town 81.6°F 81.6°F
Grand Cayman 81.5°F 81.5°F
Little Cayman 81.4°F 81.2°F
Cayman Brac 81.3°F 81.1°F

Best time for vacation in Grand Cayman

Sunniest months:
March 11 days
July 11 days
May 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 80.5 °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
15:43
Grand Cayman
+79°F
SE 14 mph
Feels like: +84°F
Precip.: 0%
Places in Cayman Islands:
Name
°F
Grand Cayman
+79°F
George Town
+79°F
Cayman Brac
+75°F
Little Cayman
+75°F
24 Hours Forecast
Grand Cayman
Local time: 15:43
January 15, thursday
1800
79°F
SE
17 mph
2100
77°F
S
14 mph
January 16, friday
0000
77°F
S
15 mph
0300
77°F
S
19 mph
0600
75°F
SW
24 mph
0900
75°F
SW
23 mph
1200
79°F
SW
21 mph
1500
77°F
SW
19 mph
Units of measurement: °C / °F