Planning for the weather is a good way to make your trip to Cocoyoc relaxing and enjoyable, especially when you're splurging. The hottest months are usually April and May with an average temp of 74°F, while the coldest months are January and December with an average of 65°F. The rainiest months in Cocoyoc are September, August, July, and June, with each month seeing an average of 13 inches of rainfall.