Weather in Makassar in September

A good month. September is a solid month to be in Makassar. Highs average 32.1 °C, lows 25.6 °C, and rain falls on 4 days — nothing in the month is working against you.

September ranks 3 of 12 in Makassar. Only August scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain falls on only 4 days, so an itinerary with no wet-weather fallback is a reasonable risk. Pack for 32.1 °C days and 25.6 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 29 days top 30 °C, making the heat continuous rather than occasional. Across the twenty years measured, the hottest September day reached 34 °C and the coldest night fell to 23.3 °C, and the wettest single day dropped 45 mm — roughly 173% of the month's rain in one day.

This is the volatile part. September rainfall has ranged from 0 mm to 173 mm across the twenty years measured — a 173 mm spread around an average of 26 mm. The average is real but almost no individual September looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 10.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 69%.

How September sits in the year

Temperatures hold steady either side: 31.2 °C in August, 32.1 here, 32.5 in October. Nothing about the timing within the month matters much. Rain is the thing that moves: October brings 6 days more of it, so the earlier half of a flexible trip is the safer half.

Daylight in September

Makassar sits close enough to the equator that daylight barely moves all year — 12.1 hours in September, against a range of just 0.6 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 28.4 °C in September — warm enough that the water offers no relief from the heat. The sea peaks at 29.9 °C in April and bottoms out at 28 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Busy. Popular without being frantic; book the things you care about, improvise the rest.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

September in Makassar versus nearby

If Makassar is one option among several, the nearby comparison is worth making. Labuan Bajo is close enough to be a coin toss — within a degree on temperature, 4 days more rain. Denpasar is close enough to be a coin toss — 2 °C cooler, 1 day more rain.

So: September works, with August the better month by 9 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Makassar

See all twelve months in Makassar, or where else to go in September.