The Cayman Islands is in the northeast trade wind belt of the Caribbean and enjoys a stable climate. Cool Cayman winter nights and hot summer days are the year-round norm, influenced only occasionally by winter storms known through the Cayman Island as Nor'westers. Summer humidity is often higher, but the cool sea breezes at night usually bring relief. In the daytime, a sun hat or cap is a good idea to have when at the Seven Mile Beach which is a major Cayman tourist attraction because it’s such a great place for Cayman diving.
To view current weather conditions in the Cayman Islands, please Click Here.
Wear cool clothing for your visit to the Cayman Islands. Summer temperatures peak in July and August with daytime highs in the upper 80's to low 90's and nighttime lows in the low 80's. High humidity in the summer months can often make the days and nights feel hotter. A favorite time to visit Cayman is December through end of April.
Rainfall is generally seasonal, from May to November, with May/June and September/October usually being the wettest months. The Cayman Islands Pirates Week has only been postponed twice due to rainfall in the past 28 years. Rainfall can be heavy during rainy season, however it often doesn’t last long and clears up quickly.
On September 11th and 12th in 2004, Hurricane Ivan caused major damage to Grand Cayman. Thankfully the island is now recovering very well and many of the Seven Mile Beach condos and resorts have had lovely ‘facelifts’ because of Ivan. The visitor need not fear about being trapped in the Cayman Islands during a hurricane as evacuation plans are in place. Check out hurricane tracking websites for more information and view our page on Hurricane Preparedness.
In the case of severe weather potentially affecting the Cayman Islands, local bulletins are based on information issued by the National Hurricane Center in Miami, Florida. If no land is threatened, the Center issues bulletins every six hours. It issues bulletins every three hours if land is threatened, and every two hours if the US is threatened and the storm is being picked up by US land-based radar.
Cayman's Met Service releases a bulletin to local media within 15 minutes of receiving information from the National Hurricane Center. The Met service also issues bulletins more frequently if conditions warrant. These bulletins are posted on this site, also. The tracking map carried on this site is also immediately updated with this information by the Met Service.
The local Meteorological Service then adds information on local weather conditions in and around the Cayman Islands. The Chairman of Cayman's National Hurricane Committee is responsible for declaring all or any of the three islands to be under an Alert, Watch or Warning. Once the declaration has been made, the local Met Service issues bulletins on the following schedule:
Alert: "Take Precautions"
In the early stages of the formation of potentially severe weather that could affect the Caribbean, the Met Service issues bulletins every six hours at 4am, 10am, 4pm, and 10pm.
Watch: "Batten Down"
The Met Service issues bulletins every three hours at 1am, 4am, 7am, 10am, 1pm, 4pm, 7pm, and 10pm.
Warning: "Take Refuge"
Bulletins are issued every two hours, on even-numbered hours, 2, 4, 6, etc. These times follow approximately the release of information by the National Hurricane Center in Miami. Go to: www.weather.gov.ky and www.weather.com (tropical storm update)