The best of all besties time to visit the West Serengeti Greatest Wildebeest Migration Safari in the Serengeti National Park is from May to June, when millions of wildebeest, zebras, and gazelles move through the Western Corridor and gather at the legendary Grumeti River, creating one of the world’s most dramatic wildlife spectacles. From Arusha, Moshi, Karatu, Mwanza, Zanzibar, Dar es Salaam, Nairobi, Kilimanjaro International Airport, and Arusha Airport, you can book either private luxury or private mid-range safari packages and enjoy this eye-catching safari during the very best months of May and June.