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September Weather in Merredin, Australia

Last updated: August 22, 2025

In September, the average temperature in Merredin, Australia hovers around 14°C (58°F). Be prepared for a range of temperatures, with minimums dipping to -1°C (31°F) and maximums soaring to 32°C (91°F). Expect about 12 mm (0.5 in) of precipitation spread over 3 days, accompanied by a comfortable average humidity of 53%.

September Temperature in Merredin

In September, in Merredin, the average temperature is 14°C (58°F). Maximum temperatures can reach 32°C (91°F), while minimums can drop as low as -1°C (31°F). This wide range of temperatures makes Merredin an ideal destination for travelers looking to experience both warm and cool weather.

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

The chart illustrates September temperature patterns in Merredin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Merredin, September typically has an average temperature of 14°C (58°F), with highs reaching up to 32°C (91°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec797774675854525257647077
Data source: Temperature data for Merredin 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 Merredin

In Merredin in September, the precipitation amount is 12 mm (0.5 in) during a span of 3 days.

September Precipitation Trends in Merredin

The chart displays monthly precipitation patterns in Merredin, 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 Merredin, September typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec14342217273344361218147
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Merredin

In Merredin in September, humidity is 53%. With an average temperature of 14°C (58°F), this humidity feels like a mild embrace, making it pleasant for traveling as you can comfortably explore without feeling overheated or weighed down by the heat.

September Average Humidity in Merredin

This chart illustrates the average monthly humidity levels in Merredin, 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 Merredin is approximately 53%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec32%40%46%61%68%75%72%66%53%37%32%29%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Merredin

In Merredin in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Merredin.

Maximum UV Index Levels in Merredin for September

The chart shows the monthly maximum UV Index (UVI) for Merredin 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 Merredin typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151513964569111415
Data source: Merredin 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 Merredin Compares to Other Months

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

This table compares monthly weather conditions in Merredin, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)14 mm (0.6 inches)32%extreme
February Weather25°C (77°F)34 mm (1.3 inches)40%extreme
March Weather23°C (74°F)22 mm (0.9 inches)46%extreme
April Weather19°C (67°F)17 mm (0.7 inches)61%very high
May Weather14°C (58°F)27 mm (1.1 inches)68%high
June Weather12°C (54°F)33 mm (1.3 inches)75%moderate
July Weather11°C (53°F)44 mm (1.7 inches)72%moderate
August Weather11°C (53°F)36 mm (1.4 inches)66%high
September Weather14°C (58°F)12 mm (0.5 inches)53%very high
October Weather18°C (64°F)18 mm (0.7 inches)37%extreme
November Weather21°C (70°F)14 mm (0.6 inches)32%extreme
December Weather25°C (77°F)7 mm (0.3 inches)29%extreme

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