Johannesburg Weather in September

What's the weather like in Johannesburg (Gauteng) in September 2023?

The climate in Johannesburg during September can be summarized as mild and dry.

September is in the spring in Johannesburg and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a comfortable 23°C (74°F), whilst at night 9°C (49°F) is normal.

Johannesburg weather averages (imperial / metric)
Daytime temperature 23.2°C 73.8°F
Nightly temperature 9.2°C 48.6°F
Average temperature 16.2°C 61.2°F
Daily sunshine 10.3 hrs
Avg rainfall 28 mm 1.1 ins
Rainy days 3 days
Sea temperature 20.6°C 69°F
Humidity 47%
Windspeed 12.2kph 8 mph

On average September is the 5th driest month of the year in Johannesburg with around 28mm 1.1 inches of rain making it a dry time to visit. This rainfall is typically spread over 3 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.3 hours of sunshine per day.

September temperatures in Johannesburg

Johannesburg average temperature in September

September rainfall

Johannesburg average rain in September

September hourly sunshine

Johannesburg average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Johannesburg in September 2023.

Other monthly averages

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Johannesburg weather stats

Johannesburg weather statistics
Hottest month: January 26.1°C 79°F
Driest month: July 4mm 0.2ins
Sunniest month: July 10hrs
Coldest month: June 16.4°C 61.5°F
Wettest month: January 135mm 5.3ins
Map showing location of Johannesburg (-26.20227, 28.04363) Johannesburg map pin © Google

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