In Nicaragua, the temperature does not vary greatly with the seasons and is largely a function of elevation. From sea level to 750 meters (2,460 ft) daytime temperatures average 86°F to 91°F, and night temperatures fall to 69°F to 75°F for most of the year. The central highlands of Nicaragua, which range in elevation from 750 to 1,600 meters (2,460-5,250 ft.) have daytime temperatures ranging from 75°F to 80°F and nights are cool (59° F to 68° F). The highest peaks of the central highlands, above 1,600 meters (5,250 ft.), have daytime averages of 71°F to 75°F, with night time lows below 59°F.
Rainfall is seasonal. The wettest months are May through to October and the driest December to April. Different parts of the country experience widely different rainfall levels. The Caribbean lowlands are the wettest section of the country, receiving between 2,500 and 6,500 millimeters (98-255 inches) of rain annually. The western slopes of the central highlands and the Pacific lowlands receive considerably less annual rainfall, being protected from moisture-laden Caribbean trade winds by the central highlands. Mean annual precipitation for the rift valley and western slopes of the highlands ranges from 1,000 to 1,500 millimeters (39-59 inches). During the rainy season, eastern Nicaragua can be subject to heavy flooding and tropical storms particularly from July through October. The Western side of the country is drier and less subject to flooding and heavy weather.