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September Weather in Macarthur, Australia

Last updated: August 22, 2025

In September, the average temperature in Macarthur, Australia hovers around 11°C (52°F), providing a chilly backdrop for your adventures. Expect a variety of weather, with temperatures ranging from a brisk -1°C (31°F) to a pleasant 27°C (80°F). With 72 mm (2.8 in) of precipitation spread over 14 days, it’s wise to prepare for some wet weather. The average humidity stands at a comfortable 76%, making it an intriguing month for exploration!

September Temperature in Macarthur

In September in Macarthur, the average temperature is 11°C (52°F). Maximum temperatures can reach 27°C (80°F), while minimums can drop as low as -1°C (31°F). This varied climate makes Macarthur an intriguing destination for travelers looking to experience a range of weather conditions.

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

The chart illustrates September temperature patterns in Macarthur, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Macarthur, September typically has an average temperature of 11°C (52°F), with highs reaching up to 27°C (80°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec666463585349484851555961
Data source: Temperature data for Macarthur 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 Macarthur

In Macarthur in September, the total precipitation amount is 72 mm (2.8 in) spread over the course of 14 days.

September Precipitation Trends in Macarthur

The chart displays monthly precipitation patterns in Macarthur, 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 Macarthur, September typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec302834487657768672766743
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Macarthur

In Macarthur in September, humidity is 76%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that can make outdoor exploration feel uncomfortable and heavy, often leaving travelers longing for a warm café to escape the cool, moist air.

September Average Humidity in Macarthur

This chart illustrates the average monthly humidity levels in Macarthur, 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 Macarthur is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%75%76%76%79%78%78%77%77%76%76%76%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Macarthur

In Macarthur 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 Macarthur.

Maximum UV Index Levels in Macarthur for September

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

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

This table compares monthly weather conditions in Macarthur, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather19°C (66°F)30 mm (1.2 inches)76%extreme
February Weather18°C (64°F)28 mm (1.1 inches)75%extreme
March Weather17°C (63°F)34 mm (1.3 inches)76%extreme
April Weather14°C (58°F)48 mm (1.9 inches)76%high
May Weather11°C (53°F)76 mm (3.0 inches)79%moderate
June Weather9°C (49°F)57 mm (2.2 inches)78%moderate
July Weather9°C (48°F)76 mm (3.0 inches)78%moderate
August Weather9°C (49°F)85 mm (3.4 inches)77%moderate
September Weather11°C (52°F)72 mm (2.8 inches)76%high
October Weather13°C (55°F)76 mm (3.0 inches)76%very high
November Weather15°C (59°F)67 mm (2.6 inches)76%extreme
December Weather16°C (62°F)43 mm (1.7 inches)76%extreme

Compare Macarthur's Climate with Cities Worldwide