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August Weather in Wilmington, United States

Last updated: June 24, 2025

In August, the average temperature in Wilmington, United States hovers around 23°C (74°F). You can expect a range from a cool 12°C (54°F) to a warm 33°C (91°F), offering a delightful climate. However, be prepared for some rain, with an average precipitation of 86 mm (3.4 in) over approximately 13 days of the month. With an average humidity of 73%, the air will feel pleasantly inviting throughout your stay!

August Temperature in Wilmington

In August in Wilmington, the average temperature is 23°C (74°F). Maximums can reach 33°C (91°F) and minimums can be as low as 12°C (54°F). This climate makes Wilmington an ideal destination for travelers looking to enjoy warm days and cool evenings.

August Weather in Wilmington: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Wilmington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wilmington, August typically has an average temperature of 23°C (74°F), with highs reaching up to 33°C (91°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec313543536472767369584237
Data source: Temperature data for Wilmington 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.

August Precipitation in Wilmington

In Wilmington, in August, the precipitation amount is 86 mm (3.4 in) over the course of 13 days.

August Precipitation Trends in Wilmington

The chart displays monthly precipitation patterns in Wilmington, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Wilmington, August typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec7910612812012412913386849796108
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Wilmington

In Wilmington in August, humidity is 73%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping blanket, making traveling a bit sweaty and heavy, but still pleasant if you stay hydrated and take breaks in the shade.

August Average Humidity in Wilmington

This chart illustrates the average monthly humidity levels in Wilmington, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Wilmington is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%85%81%82%81%73%73%78%89%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Wilmington

In Wilmington in August, 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 Wilmington.

Maximum UV Index Levels in Wilmington for August

The chart shows the monthly maximum UV Index (UVI) for Wilmington in August, 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 August, the maximum UV index in Wilmington typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098643
Data source: Wilmington August 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 August Weather in Wilmington Compares to Other Months

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

This table compares monthly weather conditions in Wilmington, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)79 mm (3.1 inches)88%moderate
February Weather2°C (35°F)106 mm (4.2 inches)88%moderate
March Weather6°C (44°F)128 mm (5.0 inches)87%high
April Weather11°C (53°F)120 mm (4.7 inches)85%very high
May Weather18°C (65°F)124 mm (4.9 inches)81%very high
June Weather22°C (72°F)129 mm (5.1 inches)82%very high
July Weather24°C (76°F)133 mm (5.2 inches)81%very high
August Weather23°C (74°F)86 mm (3.4 inches)73%very high
September Weather21°C (69°F)84 mm (3.3 inches)73%very high
October Weather14°C (58°F)97 mm (3.8 inches)78%high
November Weather6°C (43°F)96 mm (3.8 inches)89%moderate
December Weather3°C (37°F)108 mm (4.2 inches)87%moderate

Compare Wilmington's Climate with Cities Worldwide