I returned from cozumel on October 12th 2009. I also checked the weather on weather.com it said rain for that whole weekend, there was no rain in sight when we arrived on October 10th it was beautiful. The sun was bright , it was very "hot" and humid so bring lots of water and gatorade. Most importantly bring sun block or you will burn. Oh! Don't Drink The Water In Mexico It Will Make You Sick!!!!!!!! Bonvoyage!