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September Weather in Swansboro, United States

Last updated: June 24, 2025

In September, the average temperature in Swansboro, United States is a pleasant 25°C (77°F). However, be prepared for a range, as temperatures can dip to a minimum of 11°C (53°F) and soar up to 34°C (94°F). With an average humidity of 80% and precipitation totaling 218 mm (8.6 in) over 14 days, don't forget to pack your umbrella along with your shades!

September Temperature in Swansboro

In September in Swansboro, the average temperature is 25°C (77°F). Maximums can reach 34°C (94°F) and minimums can be as low as 11°C (53°F). It's an ideal time for travelers to enjoy the pleasant weather while exploring the beauty of Swansboro.

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

The chart illustrates September temperature patterns in Swansboro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Swansboro, September typically has an average temperature of 25°C (77°F), with highs reaching up to 34°C (94°F) and lows dropping to around 11°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec485355637277818076695651
Data source: Temperature data for Swansboro 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 Swansboro

In Swansboro in September, the total precipitation amount is 218 mm (8.6 in) over the course of 14 days.

September Precipitation Trends in Swansboro

The chart displays monthly precipitation patterns in Swansboro, 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 Swansboro, September typically receives around 218 mm (8.6 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec701107110511717114218721871100128
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Swansboro

In Swansboro in September humidity is 80%. With an average temperature of 25°C (77°F), this humidity feels like traveling through a warm, tropical rainforest where the air is thick and steamy, making even the simplest stroll feel like a workout.

September Average Humidity in Swansboro

This chart illustrates the average monthly humidity levels in Swansboro, 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 Swansboro is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%81%80%80%81%82%83%83%80%80%83%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Swansboro

In Swansboro 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 Swansboro.

Maximum UV Index Levels in Swansboro for September

The chart shows the monthly maximum UV Index (UVI) for Swansboro 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 Swansboro typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109854
Data source: Swansboro 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 Swansboro Compares to Other Months

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

This table compares monthly weather conditions in Swansboro, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (48°F)69 mm (2.7 inches)84%moderate
February Weather11°C (53°F)110 mm (4.3 inches)81%high
March Weather13°C (56°F)71 mm (2.8 inches)80%very high
April Weather17°C (64°F)105 mm (4.1 inches)80%very high
May Weather22°C (72°F)117 mm (4.6 inches)81%extreme
June Weather25°C (77°F)171 mm (6.7 inches)82%extreme
July Weather27°C (81°F)142 mm (5.6 inches)83%extreme
August Weather27°C (80°F)187 mm (7.4 inches)82%very high
September Weather25°C (77°F)218 mm (8.6 inches)80%very high
October Weather20°C (69°F)71 mm (2.8 inches)79%very high
November Weather13°C (56°F)100 mm (3.9 inches)83%moderate
December Weather11°C (52°F)128 mm (5.0 inches)84%moderate

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