If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Lazaro Cardenas: 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.