Grand Cayman Sea Temperature

Looking to find out what the sea water temperature in Grand Cayman is for today and the next few days? Below are data and charts that will give you information about sea temperatures in Grand Cayman and nearby locations.

Analysis and forecast for Grand Cayman water temperatures

The water temperature in Grand Cayman today is higher than the average temperature of 28.47° C (83.24° F) and the temperature on this day last year, 7th June 2023, was 29.23° C (84.61° F).

The chart and table below shows the change in water temperature in Grand Cayman over the last 30 days:

The actual nearshore temperatures may vary by several degrees and this can also be heavily affected by weather. Strong winds can cause cold, deep waters to replace the surface waters that had been warmed by the sun, and heavy rain can also reduce the temperature of the sea surface temperature as well.

Water temperature in Grand Cayman by month

The chart below shows the monthly average water temperature in Grand Cayman.

For more detailed information on how the sea temperature in Grand Cayman changes for each month of the year, choose from the months below.

Grand Cayman map and nearby water temperatures

Locations near Grand Cayman

North Side

Cayman Islands, Central America and the Caribbean

2.89 miles away

Bodden Town

Cayman Islands, Central America and the Caribbean

3.00 miles away

George Town

Cayman Islands, Central America and the Caribbean

8.61 miles away

East End

Cayman Islands, Central America and the Caribbean

8.68 miles away

Seven Mile Beach

Cayman Islands, Central America and the Caribbean

9.22 miles away

West Bay

Cayman Islands, Central America and the Caribbean

10.54 miles away

The highest temperature in Cayman Islands today is 29.56° C (85.21° F) in Little Cayman. The lowest is in Bodden Town, where the temperature of the water is 29.43° C (84.98° F).

Why measure sea surface temperatures (SST) in Grand Cayman?

The ocean covers about 71% of the Earth's surface, and scientists record the sea surface temperature (SST) of locations such as Grand Cayman because they want to understand and learn how the ocean communicates with the atomosphere of Earth.

SST is one measure that provides information on the global climate, and it can be used to predict the weather in Grand Cayman as well as atmospheric model simulations and to study marine ecosystems in the area.

Data source and citation

Raw data for the calculations made to find the sea surface temperature in Grand Cayman comes from the National Oceanic and Atmospheric Administration (NOAA) and their 1/4° daily Optimum Interpolation Sea Surface Temperature.

The water temperature data is constructed by combining observations from different platforms (satellites, ships, buoys, and Argo floats) on a regular global grid. A spatially complete sea surface temperature map is then built by interpolating to fill in gaps in the data.

If you'd like to use any of the information above in the format it is presented, please use the citation tool below.