Uganda has a typically tropical climate with little variation in temperature throughout the year. Distinctive wet and dry seasons characterise the climate of most of the country, except in the semi-arid north east. The dry season, generally from December to February and mid-June to mid-August, is the best time to visit. The two rainy seasons are from March to May, and September to November. In the south the rainiest month is April. The mountainous areas in western and eastern Uganda can be cold at night.