September weather forecast
South Africa

September is the advent of spring in South Africa, bringing increasing temperatures and a shift in rainfall patterns across the country. Inland areas such as Johannesburg and Pretoria experience a noticeable increase in temperatures, with averages ranging between 11°C (51.8°F) to 24°C (75.2°F). Coastal regions like Cape Town and Durban observe a similar warming trend, with temperatures varying from 11°C (51.8°F) to 23°C (73.4°F).

The rainfall in September sees a significant change, marking the transition from dry to wet seasons in various regions. Johannesburg, situated in the Highveld, experiences an increase in precipitation to 30mm (1.18") as the summer rainy season begins. The Western Cape, on the other hand, sees a further reduction in rainfall to 40mm (1.57"), symbolising the end of its winter rainfall period.

Comparing September to August, the transition from winter to spring is clear, with rising temperatures and changing rainfall patterns. This trend continues into October, with temperatures climbing further and the onset of the summer rainy season in the northern and eastern parts of the country.

The favourable weather conditions in September make it an excellent month for outdoor activities. Wildlife viewing remains ideal, especially in the early part of the month. The warming weather also provides the perfect conditions for exploring South Africa's stunning landscapes and embarking on adventurous pursuits, from hiking and cycling to visiting the country's renowned vineyards.

---

• Johannesburg - September »
  The shift into September in Johannesburg brings a slight increase in the average high-temperature, moving from a refreshing 19.4°C (66.9°F) in August to an agreeable 22.8°C (73°F). On the last day of September, in Johannesburg, sunrise is at 05:47 and sunset at 18:07 SAST.
• Cape Town - September »
  July through September, with an average sea temperature of 15.3°C (59.5°F), are months with the coldest seawater in Cape Town. The months with the highest humidity in Cape Town are June, August and September, with an average relative humidity of 74%.
• Pretoria - September »
  September is the least humid month in Pretoria, with an average relative humidity of 35%. The average low-temperature reading in September for Pretoria reflects a significant fall from the daytime highs, stabilizing at a moderate 13°C (55.4°F).
• Durban - September »
  In Durban, South Africa, in September, during 14.1 rainfall days, 34mm (1.34") of precipitation is typically accumulated. In Durban the average seawater temperature in September is 22.1°C (71.8°F).
• Port Elizabeth - September »
  On the first day of September in Port Elizabeth, sunrise is at 06:35 and sunset at 18:00. In Port Elizabeth, in September, during 9.4 rainfall days, 22mm (0.87") of precipitation is typically accumulated.
• Bloemfontein - September »
  September is the least humid month in Bloemfontein with an average relative humidity of 30%. On the last day of September, in Bloemfontein, South Africa, sunrise is at 05:54 and sunset at 18:15 SAST.
• Nelspruit - September »
  In September, in Nelspruit, South Africa, the rain falls for 6.3 days. August and September, with an average relative humidity of 56%, are the least humid months in Nelspruit.
• Kimberley - September »
  With an average relative humidity of 25%, September is the least humid month in Kimberley, South Africa. August and September are months with the least rain in Kimberley when the rain falls for 2.8 days and typically aggregates up to 3mm (0.12") of rain.
• Polokwane - September »
  In Polokwane in September, during 1 rainfall days, 17mm (0.67") of precipitation is typically accumulated. With an average relative humidity of 55%, September is the least humid month in Polokwane.
• Pietermaritzburg - September »
  In Pietermaritzburg in September, it is raining for 10 days, with typically 64mm (2.52") of accumulated precipitation. January through May, September through December, with an average of 7h of sunshine, are months with the least sunshine in Pietermaritzburg, South Africa.
• East London - September »
  On the last day of September, in East London, sunrise is at 05:46 and sunset at 18:10 SAST. In East London, in September, it is raining for 10 days, with typically 18mm (0.71") of accumulated precipitation.
• Rustenburg - September »
  The least humid month in Rustenburg, South Africa, is September, with an average relative humidity of 32%. September is the least humid month in Rustenburg, South Africa, with an average relative humidity of 32%.