Published: Jul 11, 2013 4:01 PM EDT

NAPLES, Fla.- Beach-goers in Naples, beware. Jellyfish are back in the Gulf waters.

Naples city officials say there have been numerous reports of beach-goers getting stung just in the last week. Experts say their arrival to the water is right on schedule, and caused by warm water temperatures, and the winds and water run-off associated with the summer rain storms.