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September Weather in Armstrong Beach, Australia

Last updated: August 22, 2025

In Armstrong Beach, Australia, the average temperature in September hovers around 20°C (69°F). Expect temperatures to vary from a cool 8°C (46°F) to a warm 32°C (90°F). During this month, anticipate approximately 18 mm (0.7 in) of rainfall spread over 3 days, with an average humidity of 65%.

September Temperature in Armstrong Beach

In September in Armstrong Beach, the average temperature is 20°C (69°F). The maximum can reach 32°C (90°F), and the minimum can be as low as 8°C (46°F). This mild climate makes Armstrong Beach an ideal destination for travelers looking to enjoy pleasant weather during their visit.

September Weather in Armstrong Beach: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Armstrong Beach, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Armstrong Beach, September typically has an average temperature of 20°C (69°F), with highs reaching up to 32°C (90°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec797978746864636468747779
Data source: Temperature data for Armstrong Beach generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Armstrong Beach

In Armstrong Beach in September, the precipitation amount is 18 mm (0.7 in) over a span of 3 days.

September Precipitation Trends in Armstrong Beach

The chart displays monthly precipitation patterns in Armstrong Beach, 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 Armstrong Beach, September typically receives around 18 mm (0.7 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec23516224611864284117185354171
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Armstrong Beach

In Armstrong Beach in September, humidity is 65%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace, creating a sticky atmosphere that can be quite oppressive for traveling, making every step feel heavier and the air thick with moisture.

September Average Humidity in Armstrong Beach

This chart illustrates the average monthly humidity levels in Armstrong Beach, 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 Armstrong Beach is approximately 65%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%77%80%76%73%71%63%71%65%64%66%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Armstrong Beach

In Armstrong Beach in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Armstrong Beach.

Maximum UV Index Levels in Armstrong Beach for September

The chart shows the monthly maximum UV Index (UVI) for Armstrong Beach 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 Armstrong Beach typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161515129771012141616
Data source: Armstrong Beach 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 Armstrong Beach Compares to Other Months

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

This table compares monthly weather conditions in Armstrong Beach, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)235 mm (9.3 inches)73%extreme
February Weather26°C (80°F)162 mm (6.4 inches)77%extreme
March Weather26°C (78°F)246 mm (9.7 inches)80%extreme
April Weather23°C (74°F)118 mm (4.7 inches)76%extreme
May Weather20°C (69°F)64 mm (2.5 inches)72%very high
June Weather18°C (64°F)28 mm (1.1 inches)71%high
July Weather17°C (64°F)41 mm (1.6 inches)63%high
August Weather18°C (65°F)17 mm (0.7 inches)71%very high
September Weather20°C (69°F)18 mm (0.7 inches)65%extreme
October Weather23°C (74°F)53 mm (2.1 inches)64%extreme
November Weather25°C (77°F)54 mm (2.1 inches)66%extreme
December Weather26°C (79°F)171 mm (6.7 inches)70%extreme

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