September Weather in Northampton, Australia

Last updated: August 22, 2025

In Northampton, Australia, the average temperature in September is a pleasant 16°C (61°F). Temperatures can vary significantly, with a minimum of 6°C (42°F) and a maximum reaching up to 34°C (93°F). Expect some light precipitation, accumulating to about 9 mm (0.4 in) over just 2 days. The air is relatively humid, with average humidity levels around 67%.

September Temperature in Northampton

In September in Northampton, the average temperature is 16°C (61°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as 6°C (42°F). This variation makes it essential for travelers to pack a range of clothing to accommodate both warm and cooler weather.

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

The chart illustrates September temperature patterns in Northampton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Northampton, September typically has an average temperature of 16°C (61°F), with highs reaching up to 34°C (93°F) and lows dropping to around 6°C (42°F).

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

September Precipitation in Northampton

In Northampton in September, the precipitation amount is 9 mm (0.4 in) over the course of 2 days.

September Precipitation Trends in Northampton

The chart displays monthly precipitation patterns in Northampton, 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 Northampton, September typically receives around 9 mm (0.4 inches) of precipitation spread over approximately 2 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 Northampton

In Northampton in September humidity is 67%. With average temperature 16°C (61°F), this humidity feels like a warm embrace that can make outdoor activities slightly uncomfortable, requiring travelers to stay hydrated and take frequent breaks in shaded areas.

September Average Humidity in Northampton

This chart illustrates the average monthly humidity levels in Northampton, 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 Northampton is approximately 67%, 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 Northampton

In Northampton 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 Northampton.

Maximum UV Index Levels in Northampton for September

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

Data source: Northampton 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 Northampton Compares to Other Months

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

This table compares monthly weather conditions in Northampton, 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)	13 mm (0.5 inches)	73%	extreme
February Weather	26°C (79°F)	30 mm (1.2 inches)	74%	extreme
March Weather	25°C (78°F)	10 mm (0.4 inches)	73%	extreme
April Weather	22°C (71°F)	13 mm (0.5 inches)	75%	very high
May Weather	18°C (64°F)	19 mm (0.8 inches)	69%	high
June Weather	15°C (59°F)	38 mm (1.5 inches)	70%	moderate
July Weather	14°C (57°F)	39 mm (1.5 inches)	66%	high
August Weather	14°C (57°F)	38 mm (1.5 inches)	66%	high
September Weather	16°C (61°F)	9 mm (0.4 inches)	67%	very high
October Weather	18°C (65°F)	13 mm (0.5 inches)	70%	extreme
November Weather	21°C (71°F)	8 mm (0.3 inches)	72%	extreme
December Weather	25°C (77°F)	6 mm (0.2 inches)	73%	extreme