September Weather in Westbury, Australia

Last updated: August 22, 2025

In September, the average temperature in Westbury, Australia is a cool 8°C (46°F). Visitors can expect minimum temperatures to dip to -4°C (25°F) and may enjoy pleasant highs of 20°C (68°F). During this time, precipitation averages 78 mm (3.1 in) spread over 13 days, contributing to an average humidity level of 80%. Be prepared for a mix of conditions!

September Temperature in Westbury

In September in Westbury, the average temperature is 8°C (46°F), with maximums reaching up to 20°C (68°F) and minimums dropping as low as -4°C (25°F). This weather makes it a great time for travelers to enjoy outdoor activities while being prepared for chilly evenings.

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

The chart illustrates September temperature patterns in Westbury, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Westbury, September typically has an average temperature of 8°C (46°F), with highs reaching up to 20°C (68°F) and lows dropping to around -4°C (25°F).

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

September Precipitation in Westbury

In Westbury in September, the precipitation amount is 78 mm (3.1 in) spread over 13 days.

September Precipitation Trends in Westbury

The chart displays monthly precipitation patterns in Westbury, 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 Westbury, September typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 13 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 Westbury

In Westbury in September, humidity is 80%. With an average temperature of 8°C (46°F), this humidity feels like traveling through a damp and chilly mist, making even a short walk feel heavy and uncomfortable.

September Average Humidity in Westbury

This chart illustrates the average monthly humidity levels in Westbury, 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 Westbury is approximately 80%, 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 Westbury

In Westbury in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Westbury, you can refer to this Hourly UV Index in Westbury.

Maximum UV Index Levels in Westbury for September

The chart shows the monthly maximum UV Index (UVI) for Westbury 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 Westbury typically reaches 6, which falls under the high exposure category.

Data source: Westbury 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 Westbury Compares to Other Months

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

This table compares monthly weather conditions in Westbury, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	17°C (63°F)	51 mm (2.0 inches)	69%	extreme
February Weather	15°C (60°F)	80 mm (3.1 inches)	68%	extreme
March Weather	15°C (58°F)	72 mm (2.8 inches)	72%	very high
April Weather	11°C (52°F)	68 mm (2.7 inches)	77%	high
May Weather	8°C (48°F)	88 mm (3.5 inches)	83%	moderate
June Weather	6°C (44°F)	63 mm (2.5 inches)	83%	low
July Weather	6°C (43°F)	105 mm (4.1 inches)	84%	low
August Weather	6°C (44°F)	81 mm (3.2 inches)	83%	moderate
September Weather	8°C (46°F)	78 mm (3.1 inches)	80%	high
October Weather	11°C (51°F)	101 mm (4.0 inches)	76%	very high
November Weather	13°C (55°F)	65 mm (2.5 inches)	76%	extreme
December Weather	15°C (59°F)	65 mm (2.6 inches)	71%	extreme