If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Temixco: The hottest months are usually April and March with an average temp of 72°F, while the coldest months are January and December with an average of 65°F. The rainiest months in Temixco are September, June, August, and July, with each month seeing an average of 9 inches of rainfall.