knucklebusted
Contributor
Rain should not be as big an issue as wind and thunder/lightening. We dive in the rain all the time. There would have to be very heavy rain squalls severely limiting vis to cancel a boat dive.
Yes, I don't fear rain on a diving trip as much as my wife, the non-diver, does. She'll get by.

I don't pay much heed to advanced forecasts, especially for rain. Rain forecast in GC can mean rain somewhere on the island - many times it's very localized and beautiful everywhere else!
That's what I'm telling my wife, hoping they are mostly just pop up showers.