The 'northern circuit', combining the Great Migration in the Serengeti, the Kleins Camp Ngorongoro Crater, Manyara and Tarangire National Parks, is probably Tanzania’s most famous area for game viewing. It is becoming increasinly busy, and it is worth considering both the weather and tourist numbers at certain times of year when planning a trip here.
In all honesty, there is no bad time to go to the north but if you want to avoid the crowds and get a great experience then the best months are June-August, and December-March.
The Southern parks of Tanzania are generally held as being the Selous Game Reserve and Elephant Ruaha National Park as they are the areas most renowned for game viewing.
There are a few months in the year that they both combine to create a fantastic contrast and some of the best game viewing on offer in Africa.
Due to the large river that runs through the park, the Selous can become relatively waterlogged directly after the main rains in April/May and so tricky to find or see the game. As this water dries off the park moves into its peak months to visit, from mid June until the end of October.
Weather
A tropical climate prevails in Tanzania - although, there are areas where the climate (and particularly microclimates) can differ. Tanzanias highest point is Mount Kilimanjaro, which is always covered in snow but throughout the rest of the country temperatures are generally hot and humidity is high on the coast. The rains follow a very similar pattern to Kenya. There are light rains in November and heavy rains in April and May. The latter two months are really the only time we would not recommend that you go. The November rains are invariably very light and sometimes they do not happen at all. On the coast, the weather is less humid between June and September
