well, I go every June, usually into July. It is hot but I like it. I think that it is hotter in Cali when I am in Jamaica as it can get over 100 in Cali during the summer. Others can chime in, but I don't remember it getting that hot when I am there in June, meaning over 100 but I don't pay much attention to the temp. Rain, well I guess so but not all the time and usually in the afternoon is what I found, it is classified as the rainy season (or hurricane season). It might rain for 20 minutes and then again it might rain for a few hours, then again, it might not rain at all. Love how hard it can rain and it can be quite refreshing. Also like the thunderstorms!! Never so much though that I didn't have a good time or find something to do while it was raining. I like it in June/July.
