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September Weather in Adelaide, South Africa

Last updated: August 31, 2025

In September, the average temperature in Adelaide, South Africa hovers around 16°C (60°F). Visitors can expect a range, with lows dipping to -1°C (30°F) and highs soaring to a sizzling 39°C (103°F). The weather brings 39 mm (1.5 in) of precipitation over approximately 7 days, contributing to an average humidity level of 79%. Be prepared for a mix of conditions during your stay!

September Temperature in Adelaide

In September in Adelaide, the average temperature is 16°C (60°F). Maximum temperatures can reach as high as 39°C (103°F), while minimums can drop to as low as -1°C (30°F). Be prepared for a wide range of weather conditions when traveling to Adelaide during this time.

September Weather in Adelaide: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Adelaide, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Adelaide, September typically has an average temperature of 16°C (60°F), with highs reaching up to 39°C (103°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec717169636057565560636568
Data source: Temperature data for Adelaide generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Adelaide

In Adelaide in September, the precipitation amount is 39 mm (1.5 in) over the course of 7 days.

September Precipitation Trends in Adelaide

The chart displays monthly precipitation patterns in Adelaide, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Adelaide, September typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec68916257285122439606070
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Adelaide

In Adelaide in September humidity is 79%. With an average temperature of 16°C (60°F), this humidity feels like a warm, damp blanket enveloping you, making outdoor activities a bit uncomfortable and requiring frequent breaks to stay cool and refreshed while traveling.

September Average Humidity in Adelaide

This chart illustrates the average monthly humidity levels in Adelaide, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Adelaide is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%86%85%84%79%77%72%79%77%78%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Adelaide

In Adelaide in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Adelaide.

Maximum UV Index Levels in Adelaide for September

The chart shows the monthly maximum UV Index (UVI) for Adelaide in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Adelaide typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151412864469111315
Data source: Adelaide September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Adelaide Compares to Other Months

Weather in Adelaide varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Adelaide, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Adelaide, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (71°F)68 mm (2.7 inches)80%extreme
February Weather22°C (71°F)91 mm (3.6 inches)79%extreme
March Weather20°C (69°F)62 mm (2.5 inches)86%extreme
April Weather17°C (63°F)57 mm (2.2 inches)85%very high
May Weather16°C (60°F)28 mm (1.1 inches)84%high
June Weather14°C (58°F)5 mm (0.2 inches)79%moderate
July Weather13°C (56°F)12 mm (0.5 inches)77%moderate
August Weather13°C (55°F)24 mm (1.0 inches)72%high
September Weather16°C (60°F)39 mm (1.5 inches)79%very high
October Weather17°C (63°F)60 mm (2.4 inches)77%extreme
November Weather18°C (65°F)60 mm (2.4 inches)78%extreme
December Weather20°C (68°F)70 mm (2.8 inches)80%extreme

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