Tanzania’s climate varies based on region and altitude, so it's important to plan your visit according to the activities you want to experience. The best time for wildlife viewing, including the Great Migration in the Serengeti, is during the dry season from June to October when animals gather around water sources.
If you're planning a beach holiday on Zanzibar, the dry season is also ideal, offering warm, sunny weather and calm seas perfect for diving and snorkeling. The rainy season from March to May sees fewer tourists and lower prices, but some roads and parks may be harder to access due to flooding.
For climbing Mount Kilimanjaro, the best months are January to March and June to October, as these offer the most stable weather conditions. Be prepared for cold nights at higher altitudes, even during these months.