In my experience, September and October can be 2 of the best diving and snorkeling months. Because the water is usually so calm, visibility is excellent. No one can predict a storm until it happens. Hotels and guesthouses on Caye Caulker are very aware of incoming weather via the Weather Channel on Cable TV and Internet. The property owners act responsibly if there is a storm threat, by immediately evacuating their guests to the mainland. September and October are known as hurricane season months, and any big storms we've had, have come during that time. Rest assured, if bad weather is coming our way, we know about it several days in advance.