December Weather in Seabrook Island, United States

Last updated: June 24, 2025

In December, the average temperature in Seabrook Island, United States hovers around 13°C (56°F). You can expect a minimum temperature of 1°C (33°F) and a pleasant maximum of 21°C (70°F). However, be prepared for some rain, as 145 mm (5.7 in) of precipitation typically falls over 11 days. With an average humidity level of 87%, this month brings a refreshing yet damp atmosphere.

December Temperature in Seabrook Island

In December in Seabrook Island, the average temperature is 13°C (56°F). The maximum can reach 21°C (70°F), and the minimum can be as low as 1°C (33°F). It's a great time for travelers to enjoy mild weather with a chance to experience a range of outdoor activities.

December Weather in Seabrook Island: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Seabrook Island, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Seabrook Island, December typically has an average temperature of 13°C (56°F), with highs reaching up to 21°C (70°F) and lows dropping to around 1°C (33°F).

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

December Precipitation in Seabrook Island

In Seabrook Island, in December, the precipitation amount is 145 mm (5.7 in) over a span of 11 days.

December Precipitation Trends in Seabrook Island

The chart displays monthly precipitation patterns in Seabrook Island, 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 Seabrook Island, December typically receives around 145 mm (5.7 inches) of precipitation spread over approximately 11 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 Seabrook Island

In Seabrook Island in December humidity is 87%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making it challenging to explore comfortably.

December Average Humidity in Seabrook Island

This chart illustrates the average monthly humidity levels in Seabrook Island, 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 Seabrook Island 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 Seabrook Island

In Seabrook Island 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 Seabrook Island for better planning.

Maximum UV Index Levels in Seabrook Island for December

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

Data source: Seabrook Island 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 Seabrook Island Compares to Other Months

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

This table compares monthly weather conditions in Seabrook Island, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (53°F)	66 mm (2.6 inches)	86%	moderate
February Weather	13°C (56°F)	87 mm (3.4 inches)	81%	high
March Weather	15°C (60°F)	72 mm (2.8 inches)	81%	very high
April Weather	19°C (66°F)	94 mm (3.7 inches)	79%	very high
May Weather	23°C (74°F)	81 mm (3.2 inches)	75%	extreme
June Weather	26°C (79°F)	117 mm (4.6 inches)	75%	extreme
July Weather	27°C (82°F)	162 mm (6.4 inches)	80%	extreme
August Weather	27°C (82°F)	200 mm (7.9 inches)	81%	extreme
September Weather	26°C (79°F)	170 mm (6.7 inches)	83%	very high
October Weather	23°C (74°F)	90 mm (3.5 inches)	78%	very high
November Weather	16°C (62°F)	97 mm (3.8 inches)	85%	high
December Weather	13°C (56°F)	145 mm (5.7 inches)	87%	moderate