If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Makassar: The hottest months are usually October and September, with an average temperature of 28°C, while the coldest months are August and July, with an average of 27°C. The rainiest months in Makassar are January, December, February and March, with each month seeing an average of 421 mm of rainfall.