nomadseason

September Weather in Melbourne, United States

Last updated: June 24, 2025

In September, the average temperature in Melbourne, United States hovers around 20°C (68°F), creating a pleasant atmosphere for outdoor activities. However, temperatures can fluctuate between a minimum of 3°C (38°F) and a maximum of 33°C (92°F). With an average precipitation of 113 mm (4.5 in) spread over 9 days, it’s wise to pack an umbrella. Additionally, expect a comfortable average humidity level of 73%, adding to the allure of this unique locale.

September Temperature in Melbourne

In September, in Melbourne, the average temperature is 20°C (68°F). Maximum temperatures can reach up to 33°C (92°F), while minimums can drop to as low as 3°C (38°F). This makes Melbourne an ideal destination for travelers seeking pleasant weather and a chance to experience both warm days and cool nights.

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

The chart illustrates September temperature patterns in Melbourne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Melbourne, September typically has an average temperature of 20°C (68°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec212238486273767367523730
Data source: Temperature data for Melbourne generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Melbourne

In Melbourne in September, the precipitation amount is 113 mm (4.5 in) over a span of 9 days.

September Precipitation Trends in Melbourne

The chart displays monthly precipitation patterns in Melbourne, 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 Melbourne, September typically receives around 113 mm (4.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec4045758315412182611131374536
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Melbourne

In Melbourne in September, humidity is 73%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making outdoor activities somewhat sticky, yet the atmosphere remains pleasant for leisurely strolls and sightseeing.

September Average Humidity in Melbourne

This chart illustrates the average monthly humidity levels in Melbourne, 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 Melbourne is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%80%77%78%77%81%81%77%73%75%85%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Melbourne

In Melbourne 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 Melbourne.

Maximum UV Index Levels in Melbourne for September

The chart shows the monthly maximum UV Index (UVI) for Melbourne 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 Melbourne typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689111098643
Data source: Melbourne 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 Melbourne Compares to Other Months

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

This table compares monthly weather conditions in Melbourne, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)40 mm (1.6 inches)78%moderate
February Weather-6°C (22°F)45 mm (1.8 inches)80%moderate
March Weather3°C (38°F)75 mm (2.9 inches)77%high
April Weather9°C (48°F)83 mm (3.3 inches)77%very high
May Weather16°C (62°F)154 mm (6.1 inches)77%very high
June Weather23°C (73°F)121 mm (4.8 inches)81%extreme
July Weather24°C (76°F)82 mm (3.2 inches)81%very high
August Weather23°C (73°F)61 mm (2.4 inches)77%very high
September Weather20°C (68°F)113 mm (4.5 inches)73%very high
October Weather11°C (52°F)137 mm (5.4 inches)75%high
November Weather3°C (38°F)45 mm (1.8 inches)85%moderate
December Weather-1°C (30°F)36 mm (1.4 inches)83%moderate

Compare Melbourne's Climate with Cities Worldwide