The Cayman Islands lay in the far Western Caribbean, closer to the equator then a lot of people realise, lying between latitudes 19° and 20° North. They are nicely cooled by prevailing trade winds, but the sun is HOT and we advise always to wear sun cream, a shady hat and sunglasses. Please take the sun in small doses to avoid sunburn.
As a guide, the following outlines our range of temperature through winter and summer.
Winter - November to April
72°F to 86°F during the day.
64°F to 72°F at night
Water temperature ranges between 78°F and 82°F
Summer - May to October
85°F to 90°F during the day.
73°F to 85°F at night
Water temperature ranges between 82°F to 86°F
Relative humidity varies from 68% to 92%.
The rainy season starts in May and lasts through October, the two rainiest months being May and October and March and April are usually the driest months.
The average annual rainfall is about 46 inches.
You can call the Cayman Islands National Meteorological Service in George Town, Grand Cayman for a current weather report at (345) 949-4528.
What to Wear
Visitors should remember that the Cayman Islands remains a "proper" British Crown Colony and our people are conservative by nature. Also note that the Cayman Islands Government strictly prohibits all forms of public nudity so please do not wear bathing suits or scanty beach wear beyond the beach or cruise ship - and cover up when in public areas elsewhere.As we say in Cayman, Please keep your shell on!
Neat, casual and comfortable tropical attire are appropriate throughout the Cayman Islands. Visitors will want to bring smart casual wear for evenings out at our restaurants. When attending church services, "Sunday dress" is appropriate - shorts and T-shirts are not considered acceptable, especially for ladies. However, ties are not expected!
Many of us say "Always Hot" when asked about the weather in Cozumel. That is what the weather is like most of the year around this island. With a subtropical climate the average temperature is about 27°C - 80°F, and because Cozumel is surrounded by water the climate is always humid often around 90%. But we can say normally all year long you will be able to find sunny days with the usually warm waters.
During the spring we get warm waters and very little rain, and nights can get a little bit cool. The summer in Cozumel is very hot, and sometimes you will get some heavy rains in the afternoon after the warm day. The water is warm and very clear and the sun will go down around 8 or even 9 PM. The Fall season is when we are most likely to get some tropical storms, but when that does not occur the days are usually warm and sunny. In Winter (November, December and January) is the time of the year where the coolest days are found, BUT REMEMBER THAT A VERY COLD DAY FOR US AVERAGES 54 °F
AVERAGE TEMPERATURE TABLE OF COZUMEL
Month Temperature F ° Temperature C °
January 74 23
February 75 23
March 78 25
April 80 26
May 82 27
June 84 29
July 84 29
August 84 29
September 83 28
October 81 27
November 78 25
December 76 24
We were on the Conquest in mid-Nov. last year....
It was HOT, I was sweating in Montegao Bay & Cozmul... Take plenty of bottled water with you.... We also ran into 7 foot plus seas & it was hard to walk a straight line... we all looked like drunken sailors weaving around.... was fun though...
__________________ Bob & Kathy
Littleton, Colorado (near Denver)
Conquest .... Nov /03 (New Orleans)
Conquest .... Dec /05 (Galveston)
Celebration.. Sept /06 (Jacksonville)
Fantasy....... Dec/07 (New Orleans)
Splendor...... Nov. 29th, 2009