Belize is situated on the Caribbean coast of Central America with Mexico to the North and Guatemala to the west and south. It lies between 15º45´ and 18º30´N and 87º30´ and 89º15´W. The terrain is low and flat along coastal areas and in some northern regions of the country while in the central and southern regions low mountains rise gradually to a height of 3,685 feet.
Belize is hot and humid and the weather is characterized by two seasons: a rainy and a dry season. Belize annual rainfall: most of the year's rainfall occurs during the period June to November, that is, the rainy season. The transition from dry to the rainy is very sharp. Belize annual rainfall ranges from 60 inches in the north to 160 inches in the south. Except for the southern regions, the rainfall is variable from year to year.
The onset of the rainy season begins in the early May in Toledo, (where the Belize annual rainfall is highest) progressing north to the Stann Creek, Belize, Cayo and Orange Walk District in late May, followed by Corozal District in early June. The mean temperature varies from 81°F/ 27°C along the coast to 69°F/21°C in the hills. The coldest month is January while the highest temperatures are experienced during the month of May.
For more information about the weather in Belize, check out The Belize government National Meteorological Service site.