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September Weather in Forest Hill, Australia

Last updated: August 22, 2025

In September, the average temperature in Forest Hill, Australia hovers around 17°C (63°F). Expect a minimum of 4°C (39°F) and a maximum of 34°C (94°F). With an average humidity of 69%, you can anticipate comfortable yet slightly humid conditions. Additionally, prepare for some light rain, with a total precipitation amount of 11 mm (0.4 in) over the course of 3 days.

September Temperature in Forest Hill

In September in Forest Hill, the average temperature is 17°C (63°F). The maximum can reach 34°C (94°F) and the minimum can be as low as 4°C (39°F). This variation in temperature makes Forest Hill a suitable destination for travelers seeking a mix of warm days and cooler evenings.

September Weather in Forest Hill: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Forest Hill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Forest Hill, September typically has an average temperature of 17°C (63°F), with highs reaching up to 34°C (94°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec767572666156555763687175
Data source: Temperature data for Forest Hill 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 Forest Hill

In Forest Hill in September, the precipitation amount is 11 mm (0.4 in) over the course of 3 days.

September Precipitation Trends in Forest Hill

The chart displays monthly precipitation patterns in Forest Hill, 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 Forest Hill, September typically receives around 11 mm (0.4 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec69971303819312711111226196
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Forest Hill

In Forest Hill in September, humidity is 69%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making outdoor activities feel slightly heavier, yet still comfortable for exploring.

September Average Humidity in Forest Hill

This chart illustrates the average monthly humidity levels in Forest Hill, 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 Forest Hill is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%69%75%78%74%76%72%75%69%62%61%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Forest Hill

In Forest Hill 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 Forest Hill.

Maximum UV Index Levels in Forest Hill for September

The chart shows the monthly maximum UV Index (UVI) for Forest Hill 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 Forest Hill typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16151410755810121415
Data source: Forest Hill 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 Forest Hill Compares to Other Months

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

This table compares monthly weather conditions in Forest Hill, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)69 mm (2.7 inches)70%extreme
February Weather24°C (75°F)97 mm (3.8 inches)69%extreme
March Weather22°C (73°F)130 mm (5.1 inches)75%extreme
April Weather19°C (67°F)38 mm (1.5 inches)78%very high
May Weather16°C (61°F)19 mm (0.8 inches)74%high
June Weather13°C (56°F)30 mm (1.2 inches)76%moderate
July Weather13°C (55°F)27 mm (1.1 inches)72%moderate
August Weather14°C (57°F)11 mm (0.4 inches)75%very high
September Weather17°C (63°F)11 mm (0.4 inches)69%very high
October Weather20°C (68°F)122 mm (4.8 inches)62%extreme
November Weather22°C (71°F)61 mm (2.4 inches)61%extreme
December Weather24°C (75°F)96 mm (3.8 inches)70%extreme

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