Warm and humid, showing little seasonal variation, the average day in Cayman is tropically pleasant. Prevailing tradewinds are delightfully cool in the winter months, and a light sweater may be necessary in those evenings to remain comfortable. The Cayman Islands lay in the far Western Caribbean, closer to the equator then some people realise, lying between latitudes 19° and 20° North. When enjoying outdoor activities, the sun can be HOT and best advise is to always to wear sun screen, 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 & 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
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!