Uganda's equatorial climate provides plentiful sunshine, moderated by the relatively high altitude of most areas of the country. Mean annual temperatures range from about 16° C in the southwestern highlands to 25° C in the northwest; but in the northeast, temperatures exceed 30° C about 254 days per year. Daytime temperatures average about eight to ten degrees warmer than nighttime temperatures in the Lake Victoria region, and temperatures are generally about fourteen degrees lower in the southwest.
Except in the northeastern corner of the country, rainfall is well distributed. The southern region has two rainy seasons, usually beginning in early April and again in October. Little rain falls in June and December. In the north, occasional rains occur between April and October, while the period from November to March is often very dry. Mean annual rainfall near Lake Victoria often exceeds 2,100 millimeters, and the mountainous regions of the southeast and southwest receive more than 1,500 millimeters of rainfall yearly. The lowest mean annual rainfall in the northeast measures about 500 millimeters.
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