I just left on 3/25 and there is no doubt there has been more rain in Negril this March than the statistical average--which is just 21mm. The week I was there was more like May weather in Negril but the good news is the rain dropped off a bit every day until the last 2 days which were sunny and beautiful! The forecast also looks better now than it did when I was stressing before our trip like you are now. In addition, the reports of bugs were thankfully no longer present as we found no need to dig into the spray whatsoever. Enjoy!