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September Weather in Alstonville, Australia

Last updated: August 22, 2025

The average temperature in Alstonville, Australia during September is a comfortable 18°C (64°F). Expect minimums dipping to 9°C (48°F) and maximums rising to a balmy 32°C (90°F). The month sees about 38 mm (1.5 in) of precipitation spread over 5 days, contributing to an average humidity of 69%.

September Temperature in Alstonville

In September in Alstonville, the average temperature is 18°C (64°F). Maximum temperatures can reach 32°C (90°F), while minimums can drop as low as 9°C (48°F). This makes it an ideal time for travelers who enjoy mild weather with warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Alstonville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alstonville, September typically has an average temperature of 18°C (64°F), with highs reaching up to 32°C (90°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec777674696460596064687175
Data source: Temperature data for Alstonville 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 Alstonville

In Alstonville in September, the total precipitation amount is 38 mm (1.5 in) spread over a duration of 5 days.

September Precipitation Trends in Alstonville

The chart displays monthly precipitation patterns in Alstonville, 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 Alstonville, September typically receives around 38 mm (1.5 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec7519919282618257303813181148
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Alstonville

In Alstonville in September humidity is 69%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making traveling both comfortable and slightly sticky as you explore the scenery.

September Average Humidity in Alstonville

This chart illustrates the average monthly humidity levels in Alstonville, 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 Alstonville is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%80%80%78%74%71%70%71%69%71%76%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Alstonville

In Alstonville in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Alstonville.

Maximum UV Index Levels in Alstonville for September

The chart shows the monthly maximum UV Index (UVI) for Alstonville 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 Alstonville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1515131074579111315
Data source: Alstonville 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 Alstonville Compares to Other Months

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

This table compares monthly weather conditions in Alstonville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)75 mm (2.9 inches)78%extreme
February Weather24°C (76°F)199 mm (7.8 inches)80%extreme
March Weather23°C (74°F)192 mm (7.5 inches)80%extreme
April Weather21°C (69°F)82 mm (3.2 inches)78%very high
May Weather18°C (65°F)61 mm (2.4 inches)73%high
June Weather16°C (60°F)82 mm (3.2 inches)71%moderate
July Weather15°C (59°F)57 mm (2.3 inches)70%moderate
August Weather16°C (61°F)30 mm (1.2 inches)71%high
September Weather18°C (64°F)38 mm (1.5 inches)69%very high
October Weather20°C (69°F)131 mm (5.1 inches)71%extreme
November Weather22°C (71°F)81 mm (3.2 inches)76%extreme
December Weather24°C (75°F)147 mm (5.8 inches)80%extreme

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