World Resorts Cayman Islands Grand Cayman Weather

Grand Cayman 7 Days Forecast

16.05
sat
Day
82°F
W 17 mph
Precip.
0%
Night
82°F
W 14 mph
Precip.
0%
17.05
sun
Day
82°F
W 12 mph
Precip.
100%
Night
82°F
W 11 mph
Precip.
0%
18.05
mon
Day
82°F
W 17 mph
Precip.
0%
Night
82°F
W 14 mph
Precip.
0%
19.05
tue
Day
82°F
W 12 mph
Precip.
0%
Night
82°F
W 12 mph
Precip.
0%
20.05
wed
Day
82°F
W 8 mph
Precip.
87%
Night
81°F
NW 9 mph
Precip.
100%
21.05
thu
Day
82°F
W 9 mph
Precip.
77%
Night
82°F
W 9 mph
Precip.
0%
22.05
fri
Day
82°F
W 14 mph
Precip.
71%
Night
82°F
W 13 mph
Precip.
56%

Sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 83.6°F. The highest and lowest sea temperatures during the month were 84.6°F and 82.8°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 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
18:34
Grand Cayman
+82°F
W 10 mph
Feels like: +90°F
Precip.: 0%
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: 18:34
May 16, saturday
2100
82°F
W
7 mph
May 17, sunday
0000
82°F
W
14 mph
0300
82°F
W
13 mph
0600
82°F
W
16 mph
0900
82°F
W
15 mph
1200
82°F
W
12 mph
1500
82°F
W
14 mph
1800
82°F
W
11 mph
Units of measurement: °C / °F