Tanzania enjoys a tropical climate, which means it can be visited all year round.

However, there are a few seasonal variations to take into account when planning your vacation in Tanzania.

The most popular time to visit Tanzania is during the dry season, from June to October.

These months generally bring sunny days, little rain and pleasant temperatures.  

It's also the best time to see wildlife, especially during the great wildebeest migration in the Serengeti, which takes place from June to August.

To sum up, the ideal time for a vacation in Tanzania depends on your personal preferences. If you prefer to avoid the rains and enjoy the best wildlife viewing, the months of June to October are recommended.  

If you're looking for lush green landscapes and are prepared for a few showers, you might consider visiting during the rainy season.