December Weather in Bluffton, United States

Last updated: June 24, 2025

In Bluffton, United States, the average temperature during December hovers around 13°C (55°F). You can expect temperatures to dip as low as -1°C (30°F) and rise up to a pleasant 23°C (73°F). Prepare for 125 mm (4.9 in) of precipitation spread over 10 days, and don't forget about the high average humidity of 87%—a hallmark of the season!

December Temperature in Bluffton

In December in Bluffton, the average temperature is 13°C (55°F). Maximums can reach 23°C (73°F), and minimums can be as low as -1°C (30°F). This varied climate makes Bluffton an ideal destination for travelers seeking both cool and warm experiences.

December Weather in Bluffton: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Bluffton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bluffton, December typically has an average temperature of 13°C (55°F), with highs reaching up to 23°C (73°F) and lows dropping to around -1°C (30°F).

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

December Precipitation in Bluffton

In Bluffton in December, the precipitation amount is 125 mm (4.9 in) spread over a period of 10 days.

December Precipitation Trends in Bluffton

The chart displays monthly precipitation patterns in Bluffton, 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 Bluffton, December typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 10 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 Bluffton

In Bluffton in December, humidity is 87%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making travel sluggish and slightly uncomfortable, as each step seems to cling to the damp air.

December Average Humidity in Bluffton

This chart illustrates the average monthly humidity levels in Bluffton, 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 Bluffton 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 Bluffton

In Bluffton 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 Bluffton for better planning.

Maximum UV Index Levels in Bluffton for December

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

Data source: Bluffton 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 Bluffton Compares to Other Months

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

This table compares monthly weather conditions in Bluffton, 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 (53°F)	61 mm (2.4 inches)	86%	moderate
February Weather	14°C (57°F)	80 mm (3.1 inches)	81%	high
March Weather	16°C (61°F)	68 mm (2.7 inches)	81%	very high
April Weather	19°C (67°F)	85 mm (3.4 inches)	79%	very high
May Weather	23°C (74°F)	89 mm (3.5 inches)	75%	extreme
June Weather	26°C (79°F)	122 mm (4.8 inches)	75%	extreme
July Weather	28°C (82°F)	156 mm (6.1 inches)	80%	extreme
August Weather	27°C (82°F)	180 mm (7.1 inches)	81%	extreme
September Weather	26°C (79°F)	127 mm (5.0 inches)	83%	very high
October Weather	23°C (73°F)	88 mm (3.5 inches)	78%	very high
November Weather	16°C (61°F)	90 mm (3.5 inches)	85%	high
December Weather	13°C (55°F)	125 mm (4.9 inches)	87%	moderate