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Grand Cayman, Cayman Islands Weather Averages

August is the hottest month in Grand Cayman with an average temperature of 30°C (85°F) and the coldest is January at 25°C (77°F) with the most daily sunshine hours at 11 in July. The wettest month is October with an average of 220mm of rain. The best month to swim in the sea is in September when the average sea temperature is 30°C (86°F).

Average Temperature Grand Cayman

What is Average Temperature?
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month
What is Average Temperature?
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month
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Average High Low Temperature Grand Cayman

What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
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Average Rainfall Grand Cayman

What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years
What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years
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Average Daily Sunshine Hours Grand Cayman

What are Average Daily Sunshine Hours?
Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer
What are Average Daily Sunshine Hours?
Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer
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Average Sea Temperature Grand Cayman

What is Average Sea Temperature?
Average daily sea temperatures and divided by the number of days in the month. Sea Temperatures are taken from buoys, ships and even satellites can calculate sea temperature based on energy that is radiated from the sea's surface
What is Average Sea Temperature?
Average daily sea temperatures and divided by the number of days in the month. Sea Temperatures are taken from buoys, ships and even satellites can calculate sea temperature based on energy that is radiated from the sea's surface
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Grand Cayman : Next 24-Hour Weather

Today - 30th December 2024

Sunrise 06:59

Sunrise

Sunset 17:58

Sunset
0:00
Overcast
27°C (80°F)
1:00
Overcast
27°C (80°F)
2:00
Overcast
27°C (80°F)
3:00
Overcast
27°C (80°F)
4:00
Overcast
27°C (80°F)
5:00
Overcast
27°C (80°F)
6:00
Cloudy
27°C (80°F)
7:00
Overcast
27°C (80°F)
8:00
Overcast
27°C (80°F)
9:00
Overcast
27°C (79°F)
10:00
Cloudy
27°C (80°F)
11:00
Partly cloudy
27°C (79°F)
12:00
Partly cloudy
26°C (79°F)
13:00
Cloudy
26°C (79°F)
14:00
Overcast
26°C (78°F)
15:00
Overcast
26°C (78°F)
16:00
Overcast
26°C (78°F)
17:00
Overcast
26°C (79°F)
18:00
Overcast
26°C (79°F)
19:00
Overcast
26°C (79°F)
20:00
Overcast
26°C (78°F)
21:00
Overcast
26°C (78°F)
22:00
Overcast
26°C (79°F)
23:00
Cloudy
26°C (78°F)