September Weather in Whyalla, Australia

Last updated: August 22, 2025

In Whyalla, Australia, the average temperature in September hovers around 16°C (61°F). You'll experience a wide range, with minimums dipping to 3°C (38°F) and maximums soaring to 35°C (96°F). During this month, expect 14 mm (0.6 in) of precipitation spread across about 4 days, while the average humidity settles at a comfortable 53%. Enjoy the variability of the season!

September Temperature in Whyalla

In September in Whyalla, the average temperature is 16°C (61°F). The maximum can reach 35°C (96°F), while the minimum can drop to as low as 3°C (38°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates September temperature patterns in Whyalla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Whyalla, September typically has an average temperature of 16°C (61°F), with highs reaching up to 35°C (96°F) and lows dropping to around 3°C (38°F).

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

September Precipitation in Whyalla

In Whyalla in September, the total precipitation amount is 14 mm (0.6 in) spread over a duration of 4 days.

September Precipitation Trends in Whyalla

The chart displays monthly precipitation patterns in Whyalla, 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 Whyalla, September typically receives around 14 mm (0.6 inches) of precipitation spread over approximately 4 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 Whyalla

In Whyalla in September humidity is 53%. With an average temperature of 16°C (61°F), this humidity feels like a gentle embrace, making it a pleasant experience for traveling, as you can enjoy outdoor activities without feeling overly muggy or sticky.

September Average Humidity in Whyalla

This chart illustrates the average monthly humidity levels in Whyalla, 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 Whyalla is approximately 53%, 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 Whyalla

In Whyalla 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 Whyalla.

Maximum UV Index Levels in Whyalla for September

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

Data source: Whyalla 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 Whyalla Compares to Other Months

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

This table compares monthly weather conditions in Whyalla, 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)	16 mm (0.6 inches)	31%	extreme
February Weather	24°C (75°F)	19 mm (0.7 inches)	36%	extreme
March Weather	23°C (73°F)	6 mm (0.3 inches)	47%	extreme
April Weather	19°C (67°F)	18 mm (0.7 inches)	58%	very high
May Weather	15°C (59°F)	16 mm (0.6 inches)	66%	high
June Weather	12°C (53°F)	21 mm (0.8 inches)	70%	moderate
July Weather	12°C (53°F)	16 mm (0.6 inches)	70%	moderate
August Weather	12°C (55°F)	23 mm (0.9 inches)	63%	high
September Weather	16°C (61°F)	14 mm (0.6 inches)	53%	very high
October Weather	19°C (66°F)	21 mm (0.8 inches)	39%	extreme
November Weather	21°C (70°F)	38 mm (1.5 inches)	42%	extreme
December Weather	23°C (74°F)	17 mm (0.7 inches)	38%	extreme