Unless you literally want to soak up the atmosphere, the only time that is not ideal for visiting Rwanda is when the long rains descend from mid-March to mid-May.

Weather

There are four discernible seasons: the long rains from mid-March to mid-May; the long dry from mid-May to mid-October; the short rains from mid-October to mid-December; and the short dry from mid-December to mid-March. At medium altitudes, temperatures are consistent with little seasonal change for most of the year.

The average daytime temperature is 24°C (75°F), except in the mountainous regions where the daytime range is kept down by the altitude to between 12°C (54°F) and 15°C (59°F). Rainfall is moderate but frequent between September and June. It rains more frequently and heavily in the northeast, where the volcanoes are blanketed by rainforest.