September Weather in Athelstone, Australia

Last updated: August 22, 2025

The average temperature in Athelstone, Australia during September is a mild 12°C (54°F). However, temperatures can range from a chilly 1°C (34°F) at night to a warm 29°C (85°F) during the day. Expect 41 mm (1.6 in) of precipitation spread over 9 days, with an average humidity of 65%. Plan accordingly to make the most of your visit!

September Temperature in Athelstone

In September in Athelstone, the average temperature is 12°C (54°F), with maximums reaching 29°C (85°F) and minimums dipping as low as 1°C (34°F). This diverse weather makes Athelstone an ideal destination for travelers seeking both warmth and the chance to enjoy cooler temperatures.

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

The chart illustrates September temperature patterns in Athelstone, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Athelstone, September typically has an average temperature of 12°C (54°F), with highs reaching up to 29°C (85°F) and lows dropping to around 1°C (34°F).

Data source: Temperature data for Athelstone generated using information from the Copernicus Climate Change Service.

September Precipitation in Athelstone

In Athelstone in September, the precipitation amount is 41 mm (1.6 in) spread over 9 days.

September Precipitation Trends in Athelstone

The chart displays monthly precipitation patterns in Athelstone, 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 Athelstone, September typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Athelstone

In Athelstone in September, humidity is 65%. With an average temperature of 12°C (54°F), this humidity feels like a cool, damp embrace that can make outdoor activities a bit uncomfortable, but offers a refreshing atmosphere for exploring cozy cafes and indoor attractions.

September Average Humidity in Athelstone

This chart illustrates the average monthly humidity levels in Athelstone, 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 Athelstone is approximately 65%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Athelstone

In Athelstone in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Athelstone.

Maximum UV Index Levels in Athelstone for September

The chart shows the monthly maximum UV Index (UVI) for Athelstone 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 Athelstone typically reaches 8, which falls under the very high exposure category.

Data source: Athelstone 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 Athelstone Compares to Other Months

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

This table compares monthly weather conditions in Athelstone, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (73°F)	15 mm (0.6 inches)	41%	extreme
February Weather	21°C (70°F)	18 mm (0.7 inches)	46%	extreme
March Weather	20°C (68°F)	13 mm (0.5 inches)	55%	extreme
April Weather	17°C (62°F)	25 mm (1.0 inches)	66%	very high
May Weather	13°C (55°F)	41 mm (1.6 inches)	73%	moderate
June Weather	10°C (50°F)	44 mm (1.7 inches)	76%	moderate
July Weather	10°C (50°F)	59 mm (2.3 inches)	76%	moderate
August Weather	10°C (50°F)	73 mm (2.9 inches)	70%	moderate
September Weather	12°C (54°F)	41 mm (1.6 inches)	65%	very high
October Weather	15°C (59°F)	37 mm (1.4 inches)	51%	very high
November Weather	18°C (64°F)	37 mm (1.5 inches)	50%	extreme
December Weather	20°C (69°F)	13 mm (0.5 inches)	46%	extreme