Areas south of the Tropic of Cancer with elevations up to  (the southern parts of both coastal plains as well as the Yucatán Peninsula), have a yearly median temperature between . Temperatures here remain high throughout the year, with only a  difference between winter and summer median temperatures. Both Mexican coasts, except for the south coast of the Bay of Campeche and northern Baja, are also vulnerable to serious hurricanes during the summer and fall. Although low-lying areas north of the Tropic of Cancer are hot and humid during the summer, they generally have lower yearly temperature averages (from ) because of more moderate conditions during the winter.