I know nothing is fool proof but does one side of the island get more rain in May than the other? We were in Negril in May and it only really rained 1 day. We had two small 15 min showers on another day but it was gone in a flash and the sun came out. We talked with a couple at the airport that had been in Ocho Rios that week and they said it rained every day for long periods of time. We are having a hard time deciding between CSA and CTI but if it's more likely rain all week at CTI it will make our decision a lot easier. Is the weather better in April? We may be able to bump our vacation up a month if it will make a big difference.