The hottest time of year in Botswana is also the wettest. The rainy season occurs in summer between October and April. Dry and cool weather, with cold and often frosty nights, occurs between May and September, when the average daytime temperature is a pleasant 77ºF (25ºC). The months between April and October are ideal for tourists in terms of weather and game viewing. This is the time when the wildlife is most prolific and easily spotted around the natural waterholes and dams.

The climate of Gaborone is semi-arid, meaning it is hot and dry for most of the year. There is little distinction between average summer and winter temperatures, although in winter months it can be chilly at night. Rain is erratic, but falls mostly in summer in heavy localised downpours that are followed quickly by a return of strong sunshine. Summers are extremely hot with high humidity in the mornings. The best time to visit Gaborone is during spring or autumn when the weather is warm and dry.