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September Weather in Hay, Australia

Last updated: August 22, 2025

In Hay, Australia, the average temperature for September hovers around 14°C (57°F). Temperatures can range from a chilly -1°C (31°F) to a sweltering 38°C (100°F), showcasing the weather's variability. Expect modest precipitation of about 17 mm (0.7 in) over just 2 days, while the average humidity remains comfortable at 66%.

September Temperature in Hay

In September in Hay, the average temperature is 14°C (57°F). Maximum temperatures can reach up to 38°C (100°F), while minimum temperatures can drop as low as -1°C (31°F). It's advisable to pack for a wide range of temperatures when traveling during this time.

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

The chart illustrates September temperature patterns in Hay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hay, September typically has an average temperature of 14°C (57°F), with highs reaching up to 38°C (100°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec817672645449495057647076
Data source: Temperature data for Hay 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 Hay

In Hay in September, the precipitation amount is 17 mm (0.7 in) over a span of 2 days.

September Precipitation Trends in Hay

The chart displays monthly precipitation patterns in Hay, 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 Hay, September typically receives around 17 mm (0.7 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec221524312626202517353526
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hay

In Hay in September humidity is 66%. With an average temperature of 14°C (57°F), this humidity feels like a warm, enveloping hug, making it pleasant for strolling through the streets, though a light jacket might be needed to stay comfortable while exploring.

September Average Humidity in Hay

This chart illustrates the average monthly humidity levels in Hay, 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 Hay is approximately 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec35%42%53%64%73%77%78%73%66%52%47%40%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hay

In Hay 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 Hay.

Maximum UV Index Levels in Hay for September

The chart shows the monthly maximum UV Index (UVI) for Hay 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 Hay typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141312853458111315
Data source: Hay 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 Hay Compares to Other Months

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

This table compares monthly weather conditions in Hay, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (81°F)21 mm (0.8 inches)35%extreme
February Weather25°C (77°F)15 mm (0.6 inches)42%extreme
March Weather22°C (72°F)24 mm (0.9 inches)53%extreme
April Weather18°C (64°F)31 mm (1.2 inches)64%very high
May Weather12°C (55°F)26 mm (1.0 inches)73%moderate
June Weather9°C (49°F)26 mm (1.0 inches)77%moderate
July Weather9°C (49°F)20 mm (0.8 inches)78%moderate
August Weather10°C (50°F)24 mm (1.0 inches)73%moderate
September Weather14°C (57°F)17 mm (0.7 inches)66%very high
October Weather18°C (64°F)35 mm (1.4 inches)52%extreme
November Weather21°C (70°F)35 mm (1.4 inches)47%extreme
December Weather24°C (76°F)26 mm (1.0 inches)39%extreme

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