Neat trick, go to Scuba Earth on the tool bar and enter the area you want to dive, click on a dive site and it will show you the water temps and if there are logged dives what wetsuite they were wearing :)
For those of you wondering what a wetsuite is, that’s a wetsuit plus hood, gloves, boots.
For Cabo they say 71-75 this time of year, at 71 I could wear a 3 mil but I would be chilled on the 2nd dive so are you doing shore dives or boats? Maybe I’d add a hooded vest. I dove just north of there offshore and they said a 5 mil but I got chilled in a 7 mil because we were not swimming much