Southern Caribbean in September??

Hi - I've looked but cant get any info. I'm looking at doing a 2 week Southern Caribbean cruise in September this year, but just wondering what the weather might be like. Can anyone give me some advice?

Thanks

Helen (Northern Ireland)

MY thought is that the weather will be warm and probably humid, and there is more of a potential for hurricanes or rain and often the ships will change ports to avoid any storms. But the southern Carib is also less prone to being affected than the eastern and western Carib areas too. So You'll want to check the weather before you leave to see what the air and water temps are and if there is any storm activity in the area you are going.