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September Weather in Southport, United States

Last updated: June 24, 2025

In September, the average temperature in Southport, United States hovers around 17°C (64°F), with daily variations that can drop to a chilly 0°C (32°F) or soar to a warm 32°C (90°F). You can expect 94 mm (3.7 in) of rain spread over approximately 9 days, contributing to an average humidity of 66%. Enjoy the mild climate and prepare for occasional showers!

September Temperature in Southport

In September in Southport, the average temperature is 17°C (64°F). The maximum can reach 32°C (90°F), while the minimum can drop as low as 0°C (32°F). This range makes it an ideal time for travelers to experience a blend of warm and cooler weather, perfect for outdoor activities and city exploration.

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

The chart illustrates September temperature patterns in Southport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Southport, September typically has an average temperature of 17°C (64°F), with highs reaching up to 32°C (90°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec262936465867727063533932
Data source: Temperature data for Southport 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 Southport

In Southport in September, the precipitation amount reaches 94 mm (3.7 in) over the course of 9 days.

September Precipitation Trends in Southport

The chart displays monthly precipitation patterns in Southport, 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 Southport, September typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec6787811121269212487941288183
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Southport

In Southport in September, humidity is 66%. With an average temperature of 17°C (64°F), this humidity feels like a gentle embrace, making it quite comfortable for traveling as long as you stay hydrated and wear light clothing.

September Average Humidity in Southport

This chart illustrates the average monthly humidity levels in Southport, 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 Southport is approximately 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%85%83%75%74%65%62%66%79%87%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Southport

In Southport 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 Southport.

Maximum UV Index Levels in Southport for September

The chart shows the monthly maximum UV Index (UVI) for Southport 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 Southport typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098642
Data source: Southport 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 Southport Compares to Other Months

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

This table compares monthly weather conditions in Southport, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)67 mm (2.6 inches)87%moderate
February Weather-2°C (29°F)87 mm (3.4 inches)85%moderate
March Weather2°C (36°F)81 mm (3.2 inches)85%high
April Weather8°C (47°F)112 mm (4.4 inches)83%very high
May Weather15°C (58°F)126 mm (5.0 inches)75%very high
June Weather19°C (67°F)92 mm (3.6 inches)73%very high
July Weather22°C (72°F)124 mm (4.9 inches)65%very high
August Weather21°C (70°F)87 mm (3.4 inches)62%very high
September Weather17°C (64°F)94 mm (3.7 inches)66%very high
October Weather12°C (54°F)128 mm (5.0 inches)79%high
November Weather4°C (39°F)81 mm (3.2 inches)87%moderate
December Weather0°C (32°F)83 mm (3.2 inches)85%low

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