Annual average weather for Cayman Islands

Annual Temperature for Cayman Islands

The hottest month in Cayman Islands is August when the average maximum temperature is 32°, average temperature is 29° and average minimum temperature is 27°.

The coolest month in Cayman Islands is January when the average maximum temperature is 28°, average temperature is 26° and average minimum temperature is 24°.

Annual Sunshine for Cayman Islands

The longest days in Cayman Islands are in June, with an average of 13.3 hours of daylight per day. December has the shortest days with an average of 11 hours of daylight per day.

The sunniest days in Cayman Islands are in February which has the most hours of sunshine per day with an average of 7.8 hours of sunshine per day, making it a quite sunny month with some cloud cover. October has the least sunshine with an average of 5.9 hours of sunshine per day, making it a sunny month that is overcast at times.

The ultraviolet index is the highest in April when it reaches 13.4 and lowest in December when it reaches 7.2.

An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Annual Sea Temperature for Cayman Islands

The warmest sea water temperatures in Cayman Islands are found in September when they peak at 30° and lowest in February when they dip to 27°.

The sea is excellent for swimming all year round as the water temperature is very warm and ideal for relaxing and swimming for the whole day.

Annual Rainfall for Cayman Islands

The wettest month in Cayman Islands is August with 2.8cm of rain and October has the most days of rain with 15.3 days with some rain, a wet time to visit the beach.

The driest month in Cayman Islands is March with 0.1cm of rain and February has the fewest days of rain with 5.2 days with some rain, a dry time to visit the beach.

Annual Humidity for Cayman Islands

The most humid month in Cayman Islands is August with a dew point (an indicator of humidity) of 27° which is extremely humid and uncomfortable unless you are on a beach. At night you would most likely require airconditioning.

The least humid month in Cayman Islands is January with a dew point of 23° which is very humid and quite uncomfortable for most unless you are on a beach. At night you would most likely require a fan.

Annual Wind Speed for Cayman Islands

The most windy month in Cayman Islands is November when the average maximum windspeed is 28kmh and the average wind speed is 19kmh.

The least windy month in Cayman Islands is September when the average maximum windspeed is 21kmh and the average wind speed is 11kmh.

Monthly Averages

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