Weather is probably a major factor when you plan your trip to Macas, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually October and November with an average temp of 52°F, while the coldest months are August and September with an average of 50°F. The rainiest months in Macas are April, March, February, and January, with each month seeing an average of 22 inches of rainfall.