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Yeah, one thing to consider is that there are fewer daylight hours in the winter than in the summer. What would be a late afternoon dive in June is at best a twilight dive at the same clock time in December.I have not dived Cozumel in years, but my practice always was to do 2-tank dives in the morning. My experience in an exception to that rule may interest you because we did 2 tanks in the afternoon in November, when you will be there.
Our problem was that bad weather had canceled our morning dives, and the port did not open until time for the afternoon dives. We did do two dives, but the second one was cut a bit short. Because it was so late, they took us directly to the marina and got taxis to take us back to our hotels. When we got off the boat, it was dark.
First dive is typically 80' +/- 20', Second dive is typically 60' +/- 20'When you guys say the dives are "deep" what are you referring to? 80ft? 120ft?
For you, maybe, but I doubt that diving to over a hundred feet is typical of most Cozumel dive ops on most trips. At Punta Sur, sure, and Maracaibo, of course, but around 80' to 90' max on the first dive is what I have experienced much more often.I would adjust that to 100' +/- 20' for the first dive, i.e. a max depth between 80 and 120 feet has been pretty typical for my first dives there.