Tanzania is generally a warm country, so there are no extremely cold places in the country. However, the temperatures can vary depending on the location and the time of year.

The coldest areas in Tanzania are typically found in the highlands, such as the Usambara and Uluguru Mountains. The temperatures in these areas can drop to around 10-15 degrees Celsius (50-59 degrees Fahrenheit) at night, especially during the dry season from June to October.

In addition, some of the higher-altitude regions of Tanzania can also experience cooler temperatures. For example, the summit of Mount Kilimanjaro, which is the highest peak in Africa, can have temperatures as low as -20 degrees Celsius (-4 degrees Fahrenheit) at night.

Overall, while Tanzania does not have an extremely cold place, it's important to be prepared for cooler temperatures if you plan to visit the highland areas or summit Mount Kilimanjaro