Given its location in the middle of the Mediterranean, the weather of the Maltese Islands is highly dependent upon the wind and the sea. In July and August, the days are long, sunny, and dry, making summer the perfect time to sunbathe on the archipelago's rocky shores and dive in one of its many grottoes or caves. Fall and spring tend to be cooler but more humid. Winters are mild, but never outright cold, with temperatures averaging around 55 degrees. In fact, those with sea legs—or flippers, as it were—have been known to sneak in a swim come December. Early June or late September are often the best times to visit: There are fewer crowds on either end of the European vacation season, and the temperate weather is perfect for strolling the limestone-walled cities and rocky shores.