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December Weather in South Wilmington, United States

Last updated: June 24, 2025

In December, the average temperature in South Wilmington, United States hovers around 1°C (34°F), with a minimum of -21°C (-5°F) and a maximum of 19°C (67°F). Expect about 56 mm (2.2 in) of precipitation over 7 days, and prepare for high humidity levels averaging 84%.

December Temperature in South Wilmington

In December in South Wilmington, the average temperature is 1°C (34°F). The maximum can reach 19°C (67°F), while the minimum can drop as low as -21°C (-5°F). It's important to pack for a range of temperatures if you're planning to travel during this month.

December Weather in South Wilmington: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in South Wilmington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Wilmington, December typically has an average temperature of 1°C (34°F), with highs reaching up to 19°C (67°F) and lows dropping to around -21°C (-5°F).
JanFebMarAprMayJunJulAugSepOctNovDec272841506373767469554034
Data source: Temperature data for South 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.

December Precipitation in South Wilmington

In South Wilmington in December, the total precipitation amount is 56 mm (2.2 in) over a period of 7 days.

December Precipitation Trends in South Wilmington

The chart displays monthly precipitation patterns in South Wilmington, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In South Wilmington, December typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec65689312116413510084841385956
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in South Wilmington

In South Wilmington in December humidity is 84%. With an average temperature of 1°C (34°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and requiring extra layers to keep warm while navigating the damp air.

December Average Humidity in South Wilmington

This chart illustrates the average monthly humidity levels in South Wilmington, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in South Wilmington is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%84%85%79%82%80%81%80%82%88%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in South Wilmington

In South Wilmington in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in South Wilmington, you can visit Hourly UV Index in South Wilmington.

Maximum UV Index Levels in South Wilmington for December

The chart shows the monthly maximum UV Index (UVI) for South Wilmington in December, 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 December, the maximum UV index in South Wilmington typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689101098642
Data source: South Wilmington December 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 December Weather in South Wilmington Compares to Other Months

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

This table compares monthly weather conditions in South Wilmington, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)65 mm (2.6 inches)82%moderate
February Weather-2°C (29°F)68 mm (2.7 inches)83%moderate
March Weather5°C (41°F)93 mm (3.6 inches)84%high
April Weather10°C (50°F)121 mm (4.8 inches)85%very high
May Weather17°C (63°F)164 mm (6.4 inches)79%very high
June Weather23°C (73°F)135 mm (5.3 inches)82%very high
July Weather24°C (76°F)100 mm (4.0 inches)80%very high
August Weather23°C (74°F)84 mm (3.3 inches)81%very high
September Weather20°C (69°F)84 mm (3.3 inches)80%very high
October Weather13°C (56°F)138 mm (5.4 inches)82%high
November Weather4°C (40°F)59 mm (2.3 inches)88%moderate
December Weather1°C (34°F)56 mm (2.2 inches)84%low

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