Weather is probably a major factor when you plan your trip to Tepic, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually May and April with an average temp of 73°F, while the coldest months are February and January with an average of 68°F. The rainiest months in Tepic are August, July, September, and June, with each month seeing an average of 18 inches of rainfall.