World Resorts Cayman Islands Grand Cayman Weather

Grand Cayman 7 Days Forecast

07.08
fri
Day
84°F
W 14 mph
Precip.
15%
Night
84°F
W 9 mph
Precip.
9%
08.08
sat
Day
84°F
SW 9 mph
Precip.
11%
Night
84°F
W 9 mph
Precip.
48%
09.08
sun
Day
84°F
W 9 mph
Precip.
11%
Night
84°F
SW 6 mph
Precip.
9%
10.08
mon
Day
84°F
W 9 mph
Precip.
13%
Night
84°F
W 14 mph
Precip.
16%
11.08
tue
Day
84°F
W 18 mph
Precip.
46%
Night
86°F
W 12 mph
Precip.
20%
12.08
wed
Day
86°F
SW 12 mph
Precip.
8%
Night
84°F
W 9 mph
Precip.
14%
13.08
thu
Day
84°F
W 11 mph
Precip.
15%
Night
84°F
W 10 mph
Precip.
22%

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.

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

Sunniest months:
July 10 days
March 10 days
September 10 days
Warmest months:
August 87.1 °F
September 86.9 °F
July 86.8 °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
17:00
Grand Cayman
+84°F
W 11 mph
Feels like: +93°F
Precip.: 13%
Places in Cayman Islands:
Name
°F
Grand Cayman
+84°F
George Town
+84°F
Cayman Brac
+84°F
Little Cayman
+84°F
24 Hours Forecast
Grand Cayman
Local time: 17:00
August 07, friday
1800
84°F
W
11 mph
2100
84°F
W
11 mph
August 08, saturday
0000
84°F
W
9 mph
0300
84°F
W
9 mph
0600
84°F
W
11 mph
0900
84°F
SW
12 mph
1200
84°F
SW
9 mph
1500
84°F
SW
11 mph
Units of measurement: °C / °F