Weather will likely play an important role when you plan your trip to Charnay-les-Macon, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and July with an average temp of 67°F, while the coldest months are January and February with an average of 41°F. Average annual precipitation for Charnay-les-Macon is 45 inches.