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September Weather in Wilmington Island, United States

Last updated: June 24, 2025

In September, the average temperature in Wilmington Island, United States is a warm 26°C (79°F), with temperatures ranging from a comfortable 17°C (63°F) to a sizzling 33°C (92°F). During this month, expect 131 mm (5.2 in) of rainfall, typically over 14 days, and maintain a high average humidity of 83%, making for a lush and vibrant atmosphere.

September Temperature in Wilmington Island

In September in Wilmington Island, the average temperature is 26°C (79°F), with maximums reaching 33°C (92°F) and minimums dropping to 17°C (63°F). This pleasant climate makes it an ideal destination for travelers seeking both warmth and comfort.

September Weather in Wilmington Island: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Wilmington Island, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wilmington Island, September typically has an average temperature of 26°C (79°F), with highs reaching up to 33°C (92°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec535761677479828179736156
Data source: Temperature data for Wilmington Island 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 Wilmington Island

In Wilmington Island in September, the precipitation amount is 131 mm (5.2 in) spread over the course of 14 days.

September Precipitation Trends in Wilmington Island

The chart displays monthly precipitation patterns in Wilmington Island, 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 Wilmington Island, September typically receives around 131 mm (5.2 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec62846678931211541681318891129
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Wilmington Island

In Wilmington Island in September, humidity is 83%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making travel an exercise in endurance as the air clings to your skin and saps your energy.

September Average Humidity in Wilmington Island

This chart illustrates the average monthly humidity levels in Wilmington Island, 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 Wilmington Island is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%79%78%73%72%74%82%82%83%79%82%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Wilmington Island

In Wilmington Island 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 Wilmington Island.

Maximum UV Index Levels in Wilmington Island for September

The chart shows the monthly maximum UV Index (UVI) for Wilmington Island 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 Wilmington Island typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479101111111110864
Data source: Wilmington Island 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 Wilmington Island Compares to Other Months

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

This table compares monthly weather conditions in Wilmington Island, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (53°F)62 mm (2.4 inches)84%moderate
February Weather14°C (57°F)84 mm (3.3 inches)79%high
March Weather16°C (61°F)66 mm (2.6 inches)78%very high
April Weather19°C (67°F)78 mm (3.1 inches)72%very high
May Weather23°C (74°F)93 mm (3.7 inches)72%extreme
June Weather26°C (79°F)120 mm (4.7 inches)74%extreme
July Weather28°C (82°F)154 mm (6.1 inches)82%extreme
August Weather27°C (82°F)168 mm (6.6 inches)82%extreme
September Weather26°C (79°F)131 mm (5.2 inches)83%very high
October Weather23°C (73°F)88 mm (3.5 inches)79%very high
November Weather16°C (61°F)91 mm (3.6 inches)82%high
December Weather13°C (56°F)129 mm (5.1 inches)85%moderate

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