Generally, Tanzania has a comfortable climate year round. The coastal areas have a tropical and humid climates, the highlands regions in the north have a temperature climate due to altitude and the vast central plateau is hot arid.
While Tanzania does not have distinct seasonal changes due to its proximity to the equator, there are some subtle climatic variations at different times of the year.
Mid-March through May
This season is normally characterized by heavy, intermittent rains and high humidity. In many recent years, however there has been more rain in January than in April and May.
June, July & August
Tanzania’s weather is coolest during these months, with low of about 45 ͦ
F or 7 ͦ C and highs of about 75 ͦ F or 24 ͦ C, During this time the country is refreshingly green.
September, October and November
This is delightful time to visit Tanzania, comparable to springtime in North America and Europe. These days are warmer with low of about 65 ͦ F or 18 ͦ C and high about 85 ͦ F or 29 ͦ C. Short scattered rains fall in November.
December, January and February
These are the warmest months of the year (Tanzania’s summertime) Temperature do not often exceed 90 ͦ F or 32 ͦ C and morning and evening temperature are refreshingly cool with low humidity.
At any time of year the temperature on the Ngorongoro Crater rim can be decidedly cooler than on the crater floor and in the Serengeti (Especially from mid-may through August