If you're hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Maringá: The hottest months are usually December and November, with an average temperature of 24°C, while the coldest months are July and June, with an average of 19°C. The rainiest months in Maringá are January, February, December and October, with each month seeing an average of 226 mm of rainfall.