Weather is probably a major factor when you plan your trip to M'banza Congo, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and September, with an average temperature of 24°C, while the coldest months are July and June, with an average of 24°C. The rainiest months in M'banza Congo are November, April, December and March, with each month seeing an average of 261 mm of rainfall.