September Weather in Northam, Australia

Last updated: August 22, 2025

The average temperature in Northam, Australia during September is a pleasant 13°C (56°F). Temperatures can vary, with minimums dipping to 1°C (34°F) and maximums soaring to 30°C (86°F). Expect some precipitation, totaling 22 mm (0.9 in) over approximately 4 days. The average humidity is around 61%, making for a comfortable atmosphere.

September Temperature in Northam

In September in Northam, the average temperature is 13°C (56°F). The maximum can reach 30°C (86°F) and the minimum can be as low as 1°C (34°F). It's a perfect time for travelers to experience a diverse range of weather conditions, so pack accordingly!

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

The chart illustrates September temperature patterns in Northam, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Northam, September typically has an average temperature of 13°C (56°F), with highs reaching up to 30°C (86°F) and lows dropping to around 1°C (34°F).

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

September Precipitation in Northam

In Northam in September, the precipitation amount is 22 mm (0.9 in) over a duration of 4 days.

September Precipitation Trends in Northam

The chart displays monthly precipitation patterns in Northam, 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 Northam, September typically receives around 22 mm (0.9 inches) of precipitation spread over approximately 4 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 Northam

In Northam in September humidity is 61%. With an average temperature of 13°C (56°F), this humidity feels like an uncomfortable blanket surrounding you, making outdoor activities slightly sticky and the air a bit heavier, which might dampen the joy of exploring for travelers.

September Average Humidity in Northam

This chart illustrates the average monthly humidity levels in Northam, 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 Northam 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 Northam

In Northam 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 Northam.

Maximum UV Index Levels in Northam for September

The chart shows the monthly maximum UV Index (UVI) for Northam 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 Northam typically reaches 9, which falls under the very high exposure category.

Data source: Northam 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 Northam Compares to Other Months

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

This table compares monthly weather conditions in Northam, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (77°F)	22 mm (0.9 inches)	40%	extreme
February Weather	24°C (76°F)	49 mm (1.9 inches)	44%	extreme
March Weather	22°C (73°F)	27 mm (1.1 inches)	50%	extreme
April Weather	19°C (66°F)	14 mm (0.5 inches)	65%	very high
May Weather	14°C (58°F)	31 mm (1.2 inches)	69%	high
June Weather	12°C (54°F)	52 mm (2.0 inches)	75%	moderate
July Weather	12°C (53°F)	58 mm (2.3 inches)	74%	moderate
August Weather	11°C (53°F)	55 mm (2.2 inches)	70%	high
September Weather	13°C (56°F)	22 mm (0.9 inches)	61%	very high
October Weather	17°C (62°F)	24 mm (1.0 inches)	50%	extreme
November Weather	20°C (68°F)	13 mm (0.5 inches)	45%	extreme
December Weather	24°C (75°F)	4 mm (0.2 inches)	40%	extreme