December Weather in North Charleston, United States

Last updated: June 24, 2025

In December, the average temperature in North Charleston, United States hovers around 12°C (54°F). Temperatures can dip as low as -3°C (28°F) and peak at a pleasant 25°C (77°F). Expect some moisture in the air, with an average precipitation of 127 mm (5.0 in) spread over 9 days, contributing to a high humidity level of 87%.

December Temperature in North Charleston

In December in North Charleston, the average temperature is 12°C (54°F), with maximums reaching 25°C (77°F) and minimums dropping as low as -3°C (28°F). This variation makes it essential to pack layers for your travels.

December Weather in North Charleston: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in North Charleston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In North Charleston, December typically has an average temperature of 12°C (54°F), with highs reaching up to 25°C (77°F) and lows dropping to around -3°C (28°F).

Data source: Temperature data for North Charleston generated using information from the Copernicus Climate Change Service.

December Precipitation in North Charleston

In North Charleston in December, the precipitation amount is 127 mm (5.0 in) over a span of 9 days.

December Precipitation Trends in North Charleston

The chart displays monthly precipitation patterns in North Charleston, 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 North Charleston, December typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in North Charleston

In North Charleston in December humidity is 87%. With an average temperature of 12°C (54°F), this humidity feels like a damp embrace, making it quite uncomfortable for traveling, as the air feels heavy and can quickly sap your energy as you explore the sights.

December Average Humidity in North Charleston

This chart illustrates the average monthly humidity levels in North Charleston, 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 North Charleston is approximately 87%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in North Charleston

In North Charleston in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in North Charleston for better planning.

Maximum UV Index Levels in North Charleston for December

The chart shows the monthly maximum UV Index (UVI) for North Charleston 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 North Charleston typically reaches 4, which falls under the moderate exposure category.

Data source: North Charleston 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 North Charleston Compares to Other Months

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

This table compares monthly weather conditions in North Charleston, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (52°F)	59 mm (2.3 inches)	86%	moderate
February Weather	14°C (57°F)	78 mm (3.1 inches)	81%	high
March Weather	15°C (60°F)	60 mm (2.4 inches)	81%	very high
April Weather	19°C (66°F)	101 mm (4.0 inches)	79%	very high
May Weather	23°C (74°F)	87 mm (3.4 inches)	75%	extreme
June Weather	26°C (79°F)	150 mm (5.9 inches)	75%	extreme
July Weather	28°C (82°F)	187 mm (7.4 inches)	80%	extreme
August Weather	27°C (81°F)	183 mm (7.2 inches)	81%	extreme
September Weather	26°C (78°F)	176 mm (6.9 inches)	83%	very high
October Weather	22°C (72°F)	79 mm (3.1 inches)	78%	very high
November Weather	15°C (59°F)	92 mm (3.6 inches)	85%	high
December Weather	12°C (54°F)	127 mm (5.0 inches)	87%	moderate