The climate of the region is semi-humid tropical, with frequent summer rains. In the northern and southern extremes of the region, the average annual temperature is 22ºC and in the plateaus ranges from 20º to 22ºC.
In spring / summer, high temperatures are common, and the warmest month ranges from 24º to 26ºC.
The average of the hottest month highs is between 30º and 36ºC. In winter, due to polar invasion, lower temperatures are common. In the coldest month, the average temperature fluctuates between 15º and 24ºC, while the average minimum is between 8º and 18ºC.
The average annual rainfall is 2,000 to 3,000 mm north of Mato Grosso, while in the Pantanal of Mato Grosso it is 1,250 mm. Despite this, the Midwest region is well stocked with rainfall, with over 70% of total rainfall occurring from November to March, which makes winter quite dry.