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September Weather in Bonnie Doon, Australia

Last updated: August 22, 2025

In September, the average temperature in Bonnie Doon, Australia hovers around 9°C (49°F), with fluctuations that can see lows of -4°C (26°F) and highs reaching 24°C (76°F). Expect about 73 mm (2.9 in) of precipitation over 11 days, with humidity levels averaging 73%.

September Temperature in Bonnie Doon

In September in Bonnie Doon, the average temperature is 9°C (49°F). Maximum can reach 24°C (76°F) and minimum can be as low as -4°C (26°F). This variability in temperatures makes it essential for travelers to pack layers to stay comfortable throughout the day.

September Weather in Bonnie Doon: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Bonnie Doon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bonnie Doon, September typically has an average temperature of 9°C (49°F), with highs reaching up to 24°C (76°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec706663564844444448545964
Data source: Temperature data for Bonnie Doon 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 Bonnie Doon

In Bonnie Doon in September, the precipitation amount is 73 mm (2.9 in), spread over 11 days.

September Precipitation Trends in Bonnie Doon

The chart displays monthly precipitation patterns in Bonnie Doon, 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 Bonnie Doon, September typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec465153708874879873987676
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bonnie Doon

In Bonnie Doon in September, humidity is 73%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill in the air, making outdoor activities slightly uncomfortable and requiring extra layers for warmth while traveling.

September Average Humidity in Bonnie Doon

This chart illustrates the average monthly humidity levels in Bonnie Doon, 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 Bonnie Doon is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec45%52%61%72%79%82%84%80%73%60%58%51%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bonnie Doon

In Bonnie Doon 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 Bonnie Doon.

Maximum UV Index Levels in Bonnie Doon for September

The chart shows the monthly maximum UV Index (UVI) for Bonnie Doon 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 Bonnie Doon typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec14121175335791215
Data source: Bonnie Doon 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 Bonnie Doon Compares to Other Months

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

This table compares monthly weather conditions in Bonnie Doon, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (70°F)46 mm (1.8 inches)45%extreme
February Weather19°C (66°F)51 mm (2.0 inches)52%extreme
March Weather17°C (63°F)52 mm (2.1 inches)61%extreme
April Weather13°C (56°F)70 mm (2.8 inches)72%high
May Weather9°C (49°F)88 mm (3.5 inches)79%moderate
June Weather7°C (44°F)74 mm (2.9 inches)82%moderate
July Weather6°C (44°F)87 mm (3.4 inches)84%moderate
August Weather7°C (45°F)98 mm (3.8 inches)80%moderate
September Weather9°C (49°F)73 mm (2.9 inches)73%high
October Weather12°C (55°F)98 mm (3.9 inches)60%very high
November Weather15°C (60°F)76 mm (3.0 inches)58%extreme
December Weather18°C (65°F)76 mm (3.0 inches)51%extreme

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