Tanzania is located near the equator and has a tropical climate, so it does not have a winter season in the traditional sense. Instead, the country has two main seasons: the dry season and the rainy season.

The dry season, which is generally considered the peak tourist season, occurs from June to October. During this time, temperatures are mild to warm, and the weather is mostly dry and sunny.

The rainy season in Tanzania occurs from November to May, and it is further divided into the "short rains" from November to December and the "long rains" from March to May. During the rainy season, temperatures can be quite hot and humid, with occasional heavy rainfall and thunderstorms.

It's important to note that even during the dry season, temperatures in Tanzania can be warm to hot, particularly in low-lying areas. It's always a good idea to check the weather forecast and pack appropriate clothing for the season and location you'll be visiting