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September Weather in Port Austin, United States

Last updated: June 24, 2025

In September, the average temperature in Port Austin, United States hovers around 18°C (64°F), offering a comfortable climate for exploration. Expect lows of 7°C (45°F) and highs reaching up to 29°C (85°F). Be prepared for the possibility of rain, as 82 mm (3.2 in) of precipitation can fall over approximately 11 days. With an average humidity of 80%, a light jacket is recommended for those cooler, moist evenings!

September Temperature in Port Austin

In September in Port Austin, the average temperature is 18°C (64°F). Maximum temperatures can reach 29°C (85°F), while the minimum can drop as low as 7°C (45°F). This makes Port Austin a comfortable destination for travelers looking to enjoy a pleasant climate.

September Weather in Port Austin: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Port Austin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Austin, September typically has an average temperature of 18°C (64°F), with highs reaching up to 29°C (85°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec262632415264717064533932
Data source: Temperature data for Port Austin 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 Port Austin

In Port Austin in September, the precipitation amount is 82 mm (3.2 in) over the course of 11 days.

September Precipitation Trends in Port Austin

The chart displays monthly precipitation patterns in Port Austin, 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 Port Austin, September typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec6363598985977675821107166
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Port Austin

In Port Austin in September humidity is 80%. With an average temperature of 18°C (64°F), this humidity feels like a warm, damp blanket wrapping around you, making travel a bit more exhausting as the air thickens and the heat clings to your skin.

September Average Humidity in Port Austin

This chart illustrates the average monthly humidity levels in Port Austin, 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 Port Austin is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Port Austin

In Port Austin in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Port Austin.

Maximum UV Index Levels in Port Austin for September

The chart shows the monthly maximum UV Index (UVI) for Port Austin 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 Port Austin typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Port Austin 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 Port Austin Compares to Other Months

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

This table compares monthly weather conditions in Port Austin, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)62 mm (2.5 inches)88%low
February Weather-3°C (26°F)63 mm (2.5 inches)87%moderate
March Weather0°C (33°F)59 mm (2.3 inches)85%moderate
April Weather5°C (41°F)89 mm (3.5 inches)86%very high
May Weather11°C (53°F)85 mm (3.3 inches)80%very high
June Weather18°C (64°F)97 mm (3.8 inches)80%very high
July Weather22°C (71°F)76 mm (3.0 inches)80%very high
August Weather21°C (71°F)75 mm (3.0 inches)80%very high
September Weather18°C (64°F)82 mm (3.2 inches)80%high
October Weather12°C (53°F)110 mm (4.3 inches)84%moderate
November Weather4°C (39°F)71 mm (2.8 inches)89%moderate
December Weather0°C (32°F)66 mm (2.6 inches)86%low

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