Like the rest of the Persian Gulf, Oman generally has one of the hottest climates in the world—with summer temperatures in Muscat and northern Oman averaging  . Oman receives little rainfall, with annual rainfall in Muscat averaging , occurring mostly in January. In the south, the Dhofar Mountains area near Salalah has a tropical-like climate and receives seasonal rainfall from late June to late September as a result of monsoon winds from the Indian Ocean, leaving the summer air saturated with cool moisture and heavy fog. Summer temperatures in Salalah range from —relatively cool compared to northern Oman.