What September feels like in Johannesburg
For Johannesburg, September is early spring on the calendar (Johannesburg is in the southern hemisphere, so the seasons run opposite to Europe and North America). Days are warm enough for short sleeves, and time outdoors is easy. Temperatures fall sharply after dark — a swing of roughly 14.9°C (26.8°F) — and nights are cool. The heat is dry rather than muggy, so drink more than you think you need.
Rain in Johannesburg in September
September is a dry month in Johannesburg; rain falls about one day in 10. A rainy day brings about 5.4 mm (0.2 in) on average — steady rain rather than a passing shower. That is lighter than the city's yearly norm of about 7.1 mm per rainy day.
Daylight and sunshine in September
Mid-month, Johannesburg gets 11 h 54 min of daylight, from sunrise near 6:06 am to sunset near 6:00 pm. Since mid-August the day has gained 44 min. The sun is out for roughly 94% of those daylight hours, so skies are mostly clear.
How September compares to the rest of the year
September is the 6th warmest month of the year in Johannesburg. Compared with August, afternoons are 4.3°C (7.7°F) warmer, with 9 mm more rain. Temperatures keep climbing into October. By October, typical highs are 25.3°C (77.5°F).
Who September suits
- Sightseeing: a good fit — the weather rarely gets in the way of a city walk.
- Parks & outdoor: a good fit — good conditions for sitting outside.
Tips for visiting Johannesburg in September
Versatile Layers
Days are noticeably warmer than nights — layers you can add or remove.
Sunglasses
Plenty of sun, so bring sunglasses and a cap.
Quick questions
How warm is Johannesburg in September?
It feels warm: typical highs are 24.4°C (75.9°F), with lows near 9.5°C (49.1°F).
Does it rain a lot in Johannesburg in September?
No — September is one of the drier times, with about 3 rainy days and 16 mm in total.
What should I wear in Johannesburg in September?
Pack versatile layers and sunglasses. Add a layer for after dark.
Is September or October better for visiting Johannesburg?
On our 12-month climate ranking, September comes out ahead (#2 of 12 vs #7). October has more rainy days.