The Great Migration: Timing the Wildebeest Journey The wildebeest migration, often referred to as the Great Migration, is a spectacular natural event that occurs annually in East Africa, primarily in the Serengeti National Park in Tanzania and the Maasai Mara National Reserve in Kenya. The best time to witness this migration typically spans from late June to October. During this period, wildebeests, along with zebras and other herbivores, move in search of fresh grazing pastures and water source