I dreaded this same topic! My wedding was November 7th, right at the end of hurricane season. I had read some reviews telling people not to go in Nov. b/c of the rain. However, I wanted 4pm because the lighting is BEAUTIFUL at that time of day, and you're the last wedding of the day, so don't have to rush away. Most of the time we were there, it actually did its rain showers at noonish, not later in the afternoon. Stick with your guns about the 4pm, you won't regret it. Just remember, you can't control the weather so if you go with the mentality of "Jamaica no problem" you will have a fantastic wedding, come sprinkles or sunshine!