Weather will likely play an important role when you plan your trip to Minatitlán, 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 82°F, while the coldest months are January and February with an average of 73°F. The rainiest months in Minatitlán are September, August, July, and October, with each month seeing an average of 13 inches of rainfall.