nomadseason

September Weather in Alton Downs, Australia

Last updated: August 22, 2025

In September, the average temperature in Alton Downs, Australia is a comfortable 21°C (70°F). Expect a minimum of 9°C (48°F) and a maximum soaring to 37°C (98°F). With precipitation averaging just 8 mm (0.3 in) over 1 day, the month typically sees a pleasant humidity level of 68%. Perfect for enjoying what this vibrant location has to offer!

September Temperature in Alton Downs

In September in Alton Downs, the average temperature is 21°C (70°F). Maximums can reach 37°C (98°F) and minimums can be as low as 9°C (48°F). This makes Alton Downs an ideal destination for travelers seeking warm days and cooler evenings.

September Weather in Alton Downs: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Alton Downs, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alton Downs, September typically has an average temperature of 21°C (70°F), with highs reaching up to 37°C (98°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec828280756963636470767881
Data source: Temperature data for Alton Downs generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Alton Downs

In Alton Downs in September, the precipitation amount is 8 mm (0.3 in) over the course of 1 day.

September Precipitation Trends in Alton Downs

The chart displays monthly precipitation patterns in Alton Downs, 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 Alton Downs, September typically receives around 8 mm (0.3 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec47811164931163598586082
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Alton Downs

In Alton Downs in September humidity is 68%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making the air feel slightly heavy and sticky, which can be quite exhausting for travelers.

September Average Humidity in Alton Downs

This chart illustrates the average monthly humidity levels in Alton Downs, 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 Alton Downs is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%80%82%79%75%72%69%74%68%71%72%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Alton Downs

In Alton Downs in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Alton Downs.

Maximum UV Index Levels in Alton Downs for September

The chart shows the monthly maximum UV Index (UVI) for Alton Downs 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 Alton Downs typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151514118671011131515
Data source: Alton Downs 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 Alton Downs Compares to Other Months

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

This table compares monthly weather conditions in Alton Downs, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather28°C (82°F)47 mm (1.9 inches)77%extreme
February Weather28°C (82°F)81 mm (3.2 inches)79%extreme
March Weather27°C (80°F)116 mm (4.6 inches)82%extreme
April Weather24°C (75°F)49 mm (1.9 inches)79%extreme
May Weather20°C (69°F)31 mm (1.2 inches)75%very high
June Weather17°C (64°F)16 mm (0.6 inches)72%high
July Weather17°C (63°F)35 mm (1.4 inches)69%high
August Weather18°C (65°F)9 mm (0.4 inches)74%very high
September Weather21°C (70°F)8 mm (0.3 inches)68%extreme
October Weather24°C (76°F)58 mm (2.3 inches)71%extreme
November Weather26°C (79°F)60 mm (2.4 inches)72%extreme
December Weather27°C (81°F)82 mm (3.2 inches)75%extreme

Compare Alton Downs's Climate with Cities Worldwide