If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Coyhaique: The hottest months are usually February and January with an average temp of 50°F, while the coldest months are July and June with an average of 35°F. The rainiest months in Coyhaique are June, August, May, and July, with each month seeing an average of 10 inches of rainfall.