Due to its relatively high altitude, the city has a subtropical climate despite lying within the tropics. Under the Köppen climate classification, Bulawayo features a humid subtropical climate (Cwa), though it’s a drier version of the climate. The mean annual temperature is 19.16°C, similar to Pretoria at a similar altitude but almost 600 km farther south. As with much of southern and eastern Zimbabwe, Bulawayo is cooled by a prevailing southeasterly airflow most of the year, and experiences three broad seasons: a dry, cool winter season from May to August; a hot dry period in early summer from late August to early November; and a warm wet period in the rest of the summer, early November to April. The hottest month is October, which is usually the height of the dry season. The average maximum temperature ranges from 21°C in July to 30°C in October. During the rainy season, daytime maxima are around 26°C. Nights are always cool, ranging from 8°C in July to 16°C in January.
The city's average annual rainfall is 590mm, which supports a natural vegetation of open woodland, dominated by Combretum and Terminalia trees. Most rain falls in the December to February period, while June to August is usually rainless. Being close to the Kalahari Desert, Bulawayo is vulnerable to droughts and rainfall tends to vary sharply from one year to another. In 1915, 748mm of rain fell in the three months up to February (December 1914 is the wettest month on record) while in the three months ending February 1983, only 84mm fell
