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September Weather in Frankston, United States

Last updated: June 24, 2025

In Frankston, United States, the average temperature in September typically hovers around 26°C (80°F). However, be prepared for a range of conditions, as the temperature can dip to a chilly 11°C (51°F) or soar to a sweltering 39°C (102°F). During this month, rainfall averages 83 mm (3.3 in) over approximately 10 days, contributing to an average humidity of 69%. Embrace the warmth while staying mindful of the occasional downpour!

September Temperature in Frankston

In September in Frankston, the average temperature is 26°C (80°F). Maximums can reach 39°C (102°F), while minimums can be as low as 11°C (51°F). This makes it an ideal time for travelers to enjoy warm days, but it's wise to pack layers for cooler evenings.

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

The chart illustrates September temperature patterns in Frankston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Frankston, September typically has an average temperature of 26°C (80°F), with highs reaching up to 39°C (102°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec495161667581858580705853
Data source: Temperature data for Frankston 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 Frankston

In Frankston in September, the total precipitation amount is 83 mm (3.3 in) over a span of 10 days.

September Precipitation Trends in Frankston

The chart displays monthly precipitation patterns in Frankston, 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 Frankston, September typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec1051391191331629579818311470112
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Frankston

In Frankston in September, humidity is 69%. With an average temperature of 26°C (80°F), this humidity feels like a warm, steamy embrace, making outdoor activities slightly sweaty and requiring frequent breaks for hydration but still inviting for leisurely strolls or exploring local attractions.

September Average Humidity in Frankston

This chart illustrates the average monthly humidity levels in Frankston, 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 Frankston is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%80%78%79%81%77%71%67%69%73%82%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Frankston

In Frankston 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 Frankston.

Maximum UV Index Levels in Frankston for September

The chart shows the monthly maximum UV Index (UVI) for Frankston 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 Frankston typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478111111111110864
Data source: Frankston 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 Frankston Compares to Other Months

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

This table compares monthly weather conditions in Frankston, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)105 mm (4.1 inches)79%moderate
February Weather11°C (52°F)138 mm (5.5 inches)80%high
March Weather16°C (62°F)119 mm (4.7 inches)78%very high
April Weather19°C (66°F)133 mm (5.2 inches)79%extreme
May Weather24°C (75°F)162 mm (6.4 inches)81%extreme
June Weather27°C (81°F)95 mm (3.7 inches)77%extreme
July Weather29°C (85°F)79 mm (3.1 inches)71%extreme
August Weather29°C (85°F)81 mm (3.2 inches)67%extreme
September Weather26°C (80°F)83 mm (3.3 inches)69%very high
October Weather21°C (70°F)114 mm (4.5 inches)73%very high
November Weather14°C (58°F)70 mm (2.8 inches)82%high
December Weather12°C (53°F)112 mm (4.4 inches)87%moderate

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