DiveMaven
Contributor
Diving Maui the last 2 weeks of August last year, water temperatures were 78-79 degrees. The DMs were telling us that they haven't seen a consistent 80 degree reading in quite a few years. So planning for 79-80 degrees is correct. Personally, I won't dive anything thinner than a 5mm full suit in Hawaii since, like Bill, I get chilly with extended dives....and my dives are rarely less than 60 minutes.