mr_v
Contributor
I am in Thailand right now. The water temperature is around 32°C. I guess I should not dive then !
I might understand you don't really want to start your dive with very warm temperature and finish with very cold one but staying warm all your dive, what's the problem ? That's what do hundred of thousend of divers in the tropic...
The OP inquired about heated undergarments and diving in 7C degree water. My advice was in that context.