Planning for the weather is a good way to make your trip to Huambo relaxing and enjoyable, especially when you're splurging. The hottest months are usually September and August, with an average temperature of 20°C, while the coldest months are June and July, with an average of 18°C. The rainiest months in Huambo are December, November, March and January, with each month seeing an average of 278 mm of rainfall.