We typically visit the island in April and November but I think we’ve actually been there every month except June, July and August and I have NEVER seen a jellyfish there of any variety. That said, my granddaughter was stung by one sometime between Christmas and New Years, and I wish I could tell you where it happened. While I wasn’t there to see it, I was told she was in a great deal of discomfort and did ultimately require medical attention.