Planning for the weather is an important factor for making your trip to Cuiaba a success, especially when you’re splurging. The hottest months are usually September and October, with an average temperature of 29°C, while the coldest months are July and June, with an average of 25°C. The rainiest months in Cuiaba are January, February, March and December, with each month seeing an average of 246 mm of rainfall.