I have dived a 7mm in Ontario with the water temp at 46 degrees and the air temp at 60 degrees. Two dives, 30 minutes each. That was what convinced me to switch to a dry suit. Plus, I can dive more of the year, and I'm toasty between dives.
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I would strongly recommend you NOT to do ice diving with a wetsuit. Believe me, the difference between 45F and 32F is VERY noticable.Akona-matata:Im also an Ontario Cdn diver. I like the odd refreshing dive to 43-45F. I use a farmer John 7mm. I put my hood on over my neck but dont use it until under 48F or so. I usually hop in the water with the wetsuit than get back on the boat and let the sun bake the suit and water before gearing up. I plan do some ice dives the same way. Usually its my mouth/lips that freeze the worst anyhow.
Swimming underwater and being wet is my favourite part of diving.
Wetsuits are better for emergency urination....make a warm spot.
Tigerman:I would strongly recommend you NOT to do ice diving with a wetsuit. Believe me, the difference between 45F and 32F is VERY noticable.
At 32F youll have a life expectancy of under 15 minutes before youre exhausted and/or unconcious and up to 45 before youre dead.
At 45F youll probably have 3 times as much!
Now that is of course without a wetsuit, but at 32F.. Its not going to be anywhere near plesant..