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 Manizales: The hottest months are usually August and September, with an average temperature of 15°C, while the coldest months are January and December, with an average of 15°C. The rainiest months in Manizales are May, April, October and June, with each month seeing an average of 729 mm of rainfall.