If you have an interest in determining what the ocean water temp. is where you may be going diving, N.O.A.A. has a website you can explore. It’s NOAA National Data Buoy Center. When you go to that website, you will see a map of the globe, along with many, many, many, red and yellow triangles. Enlarge the image for the area you want to check and click on one of the yellow triangles. Many of those buoys give the water temp., along with other information.