If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Quimixto: The hottest months are usually May and June with an average temp of 79°F, while the coldest months are February and January with an average of 71°F. The rainiest months in Quimixto are August, September, July, and June, with each month seeing an average of 10 inches of rainfall.