Planning for the weather is a good way to make your trip to Makassar relaxing and enjoyable, especially when you’re splurging. The hottest months are usually October and September with an average temp of 82°F, while the coldest months are August and July with an average of 80°F. The rainiest months in Makassar are January, December, February, and March, with each month seeing an average of 17 inches of rainfall.