Water temperatures in Cape Town tend to vary between 7-10 degrees celcius on the Atlantic side, and 12-22 degrees in False Bay. This is chilly, I admit, but the rewards for braving the cold are huge. We have an incredible selection of reefs, wrecks and kelp forests to explore here, and an astonishing variety of marine life. The way to deal with the cold is to wear the right gear. Two wetsuits (a shortie on top), thick gloves and booties, and – most essential – a hoodie – will keep you toasty warm and will enable you to enjoy leisurely dives in our rich waters.
(This information also appears on my website, here.)