Holiday Weather

Grand Cayman: Annual Weather Averages

August is the hottest month in Grand Cayman with an average temperature of 85°F (30°C) and the coldest is January at 77°F (25°C). The wettest month is October with an average of 220mm of rain.

Average Temperature: Grand Cayman

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 25 25 26 26 27 28 29 30 29 28 27 26
°F 77 77 78 79 81 82 83 85 84 82 81 78

Average High/Low Temperature: Grand Cayman

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High °C 29 29 30 30 31 32 33 33 32 32 30 29
High °F 84 84 86 86 88 90 91 91 90 90 86 84
Low °C 21 21 21 22 23 24 24 26 26 23 24 22
Low °F 70 70 70 72 73 75 75 79 79 73 75 72

Average Rainfall: Grand Cayman

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 90 60 20 40 100 140 90 120 130 220 120 90
Days 8 5 6 4 11 11 9 14 13 14 10 11

Average Humidity: Grand Cayman

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  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
% 80 80 80 75 80 80 80 80 80 80 80 80

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