Lake Manyara is consistently good as a soft game viewing park at anytime of the year. There is a seasonal migration pattern in the region which means that Manyara is officially at its peak from July to October. However, since it is such a small park, season is not the deciding factor to go here, it is whether you are in the area and have the time.
The Serengeti National Park itself covers about 15,000km² of mostly flat or gently rolling grasslands, interspersed with the occasional rock outcrops, or kopjes. But this is just the centre of a whole ecosystem which covers more than double that area, and includes Grumeti Reserve, Ikorongo Game Reserve, Loliondo Controlled Area, Maswa Game Reserve, part of the Ngorongoro Conservation Area and also Kenya's relatively small Maasai Mara Game Reserve. This combined area is often referred to as the Greater Serengeti area, or the Serengeti-Mara ecosystem.
The stunning landscape of Ngorongoro Crater combined with its spectacular concentration of wildlife is one of the greatest natural wonders of the planet. Spectacular wildebeest numbers (well over 1 million animals) pass through the property as part of the annual migration of wildebeest across the Serengeti ecosystem and calve in the short grass plains which straddle the Ngorongoro Conservation Area/Serengeti National Park boundary. This constitutes a truly superb natural phenomenon.