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September Weather in Wallan, Australia

Last updated: August 22, 2025

In Wallan, Australia, the average temperature in September hovers around 10°C (51°F). Expect a minimum drop to -1°C (31°F) and a maximum rise to 27°C (80°F) throughout the month. Be prepared for a bit of rain, as 55 mm (2.2 in) of precipitation is likely over 11 days. With an average humidity of 72%, it's a time when you might feel both the chill and the moisture in the air.

September Temperature in Wallan

In September in Wallan, the average temperature is 10°C (51°F). Maximum temperatures can reach 27°C (80°F), while minimums can drop to as low as -1°C (31°F). Be prepared for a wide range of temperatures when traveling, so pack accordingly!

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

The chart illustrates September temperature patterns in Wallan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wallan, September typically has an average temperature of 10°C (51°F), with highs reaching up to 27°C (80°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec686664575147464751556064
Data source: Temperature data for Wallan 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 Wallan

In Wallan, in September, the total precipitation amount is 55 mm (2.2 in) over the course of 11 days.

September Precipitation Trends in Wallan

The chart displays monthly precipitation patterns in Wallan, 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 Wallan, September typically receives around 55 mm (2.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec434537506053435355745774
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Wallan

In Wallan in September, humidity is 72%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less comfortable and requiring extra layers to stay warm while exploring.

September Average Humidity in Wallan

This chart illustrates the average monthly humidity levels in Wallan, 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 Wallan 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 Wallan

In Wallan 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 Wallan.

Maximum UV Index Levels in Wallan for September

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

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

This table compares monthly weather conditions in Wallan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (69°F)43 mm (1.7 inches)43%extreme
February Weather19°C (66°F)45 mm (1.8 inches)49%extreme
March Weather18°C (64°F)36 mm (1.4 inches)60%extreme
April Weather14°C (58°F)50 mm (2.0 inches)71%high
May Weather11°C (51°F)60 mm (2.4 inches)79%moderate
June Weather8°C (47°F)53 mm (2.1 inches)81%moderate
July Weather8°C (47°F)43 mm (1.7 inches)83%moderate
August Weather8°C (47°F)53 mm (2.1 inches)79%moderate
September Weather10°C (51°F)55 mm (2.2 inches)72%high
October Weather13°C (56°F)74 mm (2.9 inches)61%very high
November Weather16°C (60°F)57 mm (2.3 inches)59%extreme
December Weather18°C (64°F)74 mm (2.9 inches)50%extreme

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