September Weather in Denham, Australia

Last updated: August 22, 2025

In September, the average temperature in Denham, Australia hovers around 19°C (67°F), making it a pleasant time to visit. The temperature can dip to a minimum of 13°C (56°F) and soar to a maximum of 31°C (87°F). You can expect light precipitation of about 3 mm (0.1 in) over just 1 day, while average humidity sits at a comfortable 61%.

September Temperature in Denham

In September in Denham, the average temperature is 19°C (67°F). The maximum can reach 31°C (87°F) and the minimum can be as low as 13°C (56°F). This mild climate makes Denham an ideal destination for travelers seeking pleasant weather and outdoor activities during this time of year.

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

The chart illustrates September temperature patterns in Denham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Denham, September typically has an average temperature of 19°C (67°F), with highs reaching up to 31°C (87°F) and lows dropping to around 13°C (56°F).

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

September Precipitation in Denham

In Denham in September, the precipitation amount is 3 mm (0.1 in) over the course of 1 day.

September Precipitation Trends in Denham

The chart displays monthly precipitation patterns in Denham, 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 Denham, September typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 1 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Denham

In Denham in September, humidity is 61%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls and outdoor activities, though a slight stickiness may encourage travelers to stay hydrated and seek occasional shade.

September Average Humidity in Denham

This chart illustrates the average monthly humidity levels in Denham, 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 Denham is approximately 61%, 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 Denham

In Denham in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Denham.

Maximum UV Index Levels in Denham for September

The chart shows the monthly maximum UV Index (UVI) for Denham 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 Denham typically reaches 10, which falls under the very high exposure category.

Data source: Denham 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 Denham Compares to Other Months

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

This table compares monthly weather conditions in Denham, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	6 mm (0.2 inches)	63%	extreme
February Weather	26°C (79°F)	33 mm (1.3 inches)	66%	extreme
March Weather	26°C (80°F)	1 mm (0.0 inches)	68%	extreme
April Weather	24°C (76°F)	8 mm (0.3 inches)	71%	very high
May Weather	21°C (71°F)	18 mm (0.7 inches)	68%	very high
June Weather	19°C (66°F)	30 mm (1.2 inches)	69%	moderate
July Weather	18°C (64°F)	17 mm (0.7 inches)	66%	high
August Weather	18°C (64°F)	20 mm (0.8 inches)	65%	very high
September Weather	19°C (67°F)	3 mm (0.1 inches)	61%	very high
October Weather	20°C (69°F)	5 mm (0.2 inches)	62%	extreme
November Weather	22°C (72°F)	3 mm (0.1 inches)	63%	extreme
December Weather	25°C (76°F)	2 mm (0.1 inches)	62%	extreme