Weather will likely play an important role when you plan your trip to Lazaro Cardenas, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and May with an average temp of 81°F, while the coldest months are March and February with an average of 77°F. The rainiest months in Lazaro Cardenas are September, August, June, and October, with each month seeing an average of 9 inches of rainfall.