World Resorts Cayman Islands Grand Cayman

Grand Cayman Monthly Weather Averages

Please click on any column to get detailed information about Grand Cayman weather in that particular month. You will get daily weather information for that month for the last several years.

Day & Night air temperature, °F

The warmest month in Grand Cayman is july. The average daily temp is 86.9°F. The average nightly temp is 83.8°F.

Sea water temperature, °F

The warmest sea temperature usually observed in September. Average daily sea water temperature during this month is 85.9°F.

Precipitation total, in.

April is the month with least precipitations during the year. The average precipitation totals for this month is 1.0 in. The month with most precipitation total is October.

Number of rainy days

This chart shows averages for the last three years. It shows medium and heavy rains only, it doesn't show light rains.

Wind speed, mph
Sunny, partly cloudy and cloudy days
Average sunny hours

Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.

* Charts above show average data for the last 3 years.

Best time for vacation in Grand Cayman

Sunniest months:
July 11 days
September 10 days
March 10 days
Warmest months:
August 87.3 °F
July 87.3 °F
September 86.9 °F
Warmest sea temp:
September 85.9 °F
August 85.7 °F
October 85.4 °F
Coldest months:
January 80.2 °F
February 80.4 °F
March 80.8 °F
Rainiest months:
October 9 days
May 6 days
November 6 days
Windiest months:
December 16.7 mph
November 16.0 mph
January 15.6 mph

Grand Cayman on a weather map

Grand Cayman
+81°F
W 16 mph
Feels like: +86°F
Precip.: 0%
Places in Cayman Islands:
Name
°F
+81°F
+81°F
+81°F
+81°F
24 Hours Forecast
Grand Cayman
Local time: 22:53
April 29, monday
0000
81°F
W
16 mph
0300
81°F
W
18 mph
0600
81°F
W
19 mph
0900
81°F
W
21 mph
1200
81°F
W
18 mph
1500
81°F
W
17 mph
1800
81°F
W
16 mph
2100
81°F
W
14 mph
Units of measurement: °C / °F