October heat before the rains in Zambia, Zimbabwe and Malawi
For much of south-central Africa the hottest weeks of the year come just before the first rains. Here is why, and how to cope.
Published October 5, 2026
For much of south-central Africa the hottest weeks of the year come just before the first rains. Here is why, and how to cope.
By October the sun is climbing high over the Southern Hemisphere, but the rains have not yet arrived. Months of dry season have left the ground bare and parched, so almost all of the sun’s energy goes into heating the land and the air. Once the rains begin in November, cloud cover and wet soil bring temperatures down. That is why Lusaka, Harare and Lilongwe often record their highest temperatures of the year now rather than in midsummer.
The capitals sit on high plateaus, which keeps them in the low thirties on most October days. The low-lying valleys are a different story. Along the Zambezi near Kariba and Chirundu, in the Luangwa valley and in Malawi’s lower Shire valley, afternoon temperatures near or above 40°C are common at this time of year, and nights stay warm, which gives the body little chance to recover.
Drink water before you feel thirsty, and more if you work outdoors. Shift heavy work to early morning and evening, and rest in shade between 11 in the morning and 4 in the afternoon. Watch older relatives, young children and people with heart or kidney conditions closely. Confusion, fainting or hot dry skin are signs of heat stroke, which is a medical emergency. The daily Africa Heat Watch on AfricaMeteo lists the hottest capitals each morning.