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September Weather in Ballan, Australia

Last updated: August 22, 2025

In September, the average temperature in Ballan, Australia hovers around 9°C (48°F). Expect a chilly minimum of -2°C (28°F), giving way to a comfortable maximum of 24°C (76°F). With 58 mm (2.3 in) of precipitation spread over 13 days, it's advisable to be prepared for some rain. Additionally, the average humidity sits at a moderate 72%, making the air feel crisp.

September Temperature in Ballan

In September in Ballan, the average temperature is 9°C (48°F), with maximums reaching up to 24°C (76°F) and minimums dropping as low as -2°C (28°F). This variation makes it essential for travelers to pack layers to stay comfortable throughout the day.

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

The chart illustrates September temperature patterns in Ballan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ballan, September typically has an average temperature of 9°C (48°F), with highs reaching up to 24°C (76°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec656260544844434448525760
Data source: Temperature data for Ballan 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 Ballan

In Ballan in September, the total precipitation amount is 58 mm (2.3 in), occurring over the course of 13 days.

September Precipitation Trends in Ballan

The chart displays monthly precipitation patterns in Ballan, 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 Ballan, September typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec374439496752476858797563
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ballan

In Ballan in September, humidity is 72%. With an average temperature of 9°C (48°F), this humidity feels like a chilly dampness that clings to your skin, making it essential to dress in layers for traveling, as the cold and moisture can be quite uncomfortable for prolonged outdoor activities.

September Average Humidity in Ballan

This chart illustrates the average monthly humidity levels in Ballan, 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 Ballan is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec43%49%60%71%79%82%83%79%72%61%59%50%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ballan

In Ballan in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Ballan.

Maximum UV Index Levels in Ballan for September

The chart shows the monthly maximum UV Index (UVI) for Ballan 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 Ballan typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec14121174335791214
Data source: Ballan 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 Ballan Compares to Other Months

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

This table compares monthly weather conditions in Ballan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)37 mm (1.5 inches)43%extreme
February Weather17°C (62°F)44 mm (1.7 inches)49%extreme
March Weather16°C (61°F)39 mm (1.5 inches)60%extreme
April Weather12°C (54°F)49 mm (1.9 inches)71%high
May Weather9°C (48°F)67 mm (2.6 inches)79%moderate
June Weather7°C (44°F)52 mm (2.0 inches)81%moderate
July Weather6°C (44°F)47 mm (1.8 inches)83%moderate
August Weather7°C (44°F)68 mm (2.7 inches)79%moderate
September Weather9°C (48°F)58 mm (2.3 inches)72%high
October Weather11°C (52°F)79 mm (3.1 inches)61%very high
November Weather14°C (57°F)75 mm (3.0 inches)59%extreme
December Weather16°C (61°F)63 mm (2.5 inches)50%extreme

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