Weather in Pretoria in September

Prime time. September is about as good as Pretoria gets. Highs average 28.9 °C, lows 10.7 °C, and rain falls on 2 days — nothing in the month is working against you.

September ranks 5 of 12 in Pretoria: past the worst of the year but short of June, which is the month to book if the dates are open.

Rain falls on only 2 days, so an itinerary with no wet-weather fallback is a reasonable risk. Pack for 28.9 °C days and 10.7 °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: 13 days top 30 °C — hot spells arrive, but they break; the day swings 18.2 °C from low to high, which means one bag has to cover both. Across the twenty years measured, the hottest September day reached 35.9 °C and the coldest night fell to 1.4 °C, and the wettest single day dropped 41 mm — roughly 315% of the month's rain in one day.

This is the volatile part. September rainfall has ranged from 0 mm to 57 mm across the twenty years measured — a 57 mm spread around an average of 13 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 9.4 km/h, so the temperature on the page is close to the temperature on your skin, and the air is dry at 35% humidity, which makes the heat far more bearable than the same figure somewhere humid — and dehydrates you faster than you expect.

How September sits in the year

The month is on the way up: 4.3 °C warmer than August, and October adds another 1.7 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short. Rain is the thing that moves: October brings 7 days more of it, so the earlier half of a flexible trip is the safer half.

Daylight in September

11.9 hours of daylight, gaining 0.7 hours across the month. That is between Pretoria's extremes of 13.7 and 10.5 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 26.3 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage. At 1332 m the air is thin enough to matter — sun that burns faster than the temperature suggests, and nights that cool off quickly. Within September itself the daily swing is 18.2 °C, so mornings and afternoons need different clothes.

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 Pretoria versus nearby

If Pretoria is one option among several, the nearby comparison is worth making. Johannesburg is a better bet in September — 3.5 °C cooler, the same number of rain days. Pietermaritzburg is close enough to be a coin toss — 3 °C cooler, 8 days more rain.

So: September works, with June the better month by 10 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Pretoria

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