Mike
Contributor
Is it a occasional rain ? or days of down pours ?
Yes and Yes.
You can expect to count on all of possibility of all of the following - sunny days, calm days, windy days, occasional rain, days of non-stop down pouring.
The problem is you can't predict which ones you'll get and how much of each. Diving could be uneffected or greatly effected to the point of no diving. You could end up with an entire week of perfect weather and the next week it could rain non-stop for a week.
There is a reason that things are cheaper during rainy season, it's because of the very high probability to experience bad weather. If you decide to roll the dice looking for a bargain vacation during rainy season you'll take your chances at seeing if pays off or not.