Cozumel Diving
Cozumel is where many Americans go to dive. It is easy to get to, relatively inexpensive, and the diving is very good. Although I like Little Cayman and The Belizean atolls a bit better, it ranks right up there with the best diving in the Caribbean.
I have been here a half dozen times, so this review is a bit of an amalgam of several trips. The weather varies a lot from season to season. June and July are my favorite times to dive here when the water is very warm and seas are flat as glass. Hurricanes are an issue here in August (it seems to attract early ones) and we were there once in August a week or so after a medium sized one, so the threat is real. It is perfect in early summer. Was there in late fall and it was very rough and we were quite restricted in where we went. Spring break was good as well, kind of in between.
Our family has stayed in a condo or two in the north part of the island which was great and good value. If you have a couple of kids and want a mixed activity vacation, this worked great. Diving requires a bit of a drive, so you kind of need a car to commute. If you want an all in dive holiday, this is probably not so good. I have stayed at the Presidente which is right by the best dive sites. The boat picked us up right by the hotel peer and you are diving in 10 minutes. You also are south of the cruise ship parking lot.
There are a lot of options in dive operators as well. We have avoided the hotel operators ard selected those that cater to more serious divers. We stay away from those that focus on the cruise trade and fill in with divers when they can't fill up there scuba buses.