Snorkling and water temps?

[Jscatricks]

I will be going to Kauai and the Big Island for some diving. Will also be snorkeling with my wife when not diving. I am wondering how the water temp has been for snorkeling and playing at the beach in general?
9 days until Hawaii

 

[Shaka Doug]

The water has been in the mid seventies here on Maui. I'd expect the same throughout all the islands. It's nice when it's sunny but could feel really cold if it's cloudy or windy. I'd suggest a light wetsuit if you really want to extend your snorkeling time and enjoyment.