The best time to visit Rubondo Island National Park for most travelers is the main dry season, from about June to August, often stretching into September. Rain is usually light, forest trails are drier and easier to walk, and the weather is pleasant for boat trips, fishing and chimpanzee tracking. This season also lines up well with the Serengeti's popular dry months, making it easy to combine the two.
That said, Rubondo can be visited year-round, and each season has its own appeal. The short rains, usually around November and December, bring fresh green scenery and the arrival of migrant birds. January and February often offer a drier break with good conditions and fewer visitors. The long rains, generally from about March to May, are the wettest period, when some trails become muddy and heavy downpours can disrupt activities, but the forest is at its lushest and the island is at its most peaceful. Because Rubondo sits on Lake Victoria, showers can occur in any month, so flexibility and a light rain jacket are always useful.