Belize's subtropical climate is hot and humid most of the year. In Belize City, the average daily temperature is 85°F, but the daytime high is often in the 90s between May and October, with uncomfortably high humidity. Dry season runs from January through April. Heavy rains begin in June and can continue through December. Mosquito outbreaks are a perennial result. From March to November, a fairly steady breeze makes the heat in Belize City less intolerable. The coolest period is December to February, when the average daily temperature is only 75°F. During this period, night temperatures can drop into the upper 50s. Tropical storms and hurricanes can occur from June through November. In 1931 and 1961, hurricanes devastated Belize City.