Myrtle Beach Weather in December

Although December's weather can get chilly at Myrtle Beach, South Carolina, it can also get warm. The amount of sun and rainfall that occur now are similar to the rest of winter.

This page gives detailed information on the typical December weather for Myrtle Beach.

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The temperature and rainfall numbers here are historical averages based on climate data gathered at Myrtle Beach. The sunshine and humidity measurements are averages from the Charleston International Airport located south along the coast in North Charleston, SC. This weather station has a climate similar to Myrtle Beach and is the closest one that collects sun and humidity information for the National Climatic Data Center.

Temperature Weather iconTemperature

59 °F December average high 15 °C
36 °F December average low 2 °C

In most years, Myrtle Beach averages a daily maximum temperature for December that's between 54 and 63 degrees Fahrenheit (12 to 17 degrees Celsius). The minimum temperature usually falls between 32 and 41 °F (0 to 5 °C).

The days at Myrtle Beach continue to cool down quicky during December. By the end of the month, the temperature has dropped around 8 °F (4 °C) below what it was at the start.

15 days 60 °F max. or more (16 °C)
11 days 32 °F min. or less (0 °C)

Nearly every December day warms to over 50 °F (10 °C) at Myrtle Beach. The city averages 3 days in this month when the thermometer reaches into the 70s °F (over 21 °C). Temperatures above 80 °F (27 °C) rarely happen here during December.

The thermometer dips to 20 °F (-8 °C) or below on an average of one night. But only once a decade does December get as chilly as 10 °F (-12 °C).

Rainy Weather iconPrecipitation

3.8 in total precipitation 95 mm
8 days of rain or snow

December is an average month for amount of rainfall at Myrtle Beach. Occasionally some of the precipitation falls as snow.

Sunny Weather iconSun

56 % sunshine
9 days clear skies

The sun's rays reach the ground in Myrtle Beach during 56 percent of daylight hours on average in December, for a total of 173 hours in the month. Typically on 9 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in December at this holiday destination averages 9 hours and 57 minutes a day. The shortest days of the year, from around December 17th to 25th, last 9 hours and 55 minutes from sunrise to sunset.

Humid Weather iconHumidity

72 % December average humidity

The relative humidity in Myrtle Beach during December usually peaks at 82 percent in the morning then drops to 55 percent by late afternoon.

Local Time1 am4 am7 am10 am1 pm4 pm7 pm10 pm
Humidity % 80 82 82 69 55 55 71 78

These weather data are long-term historical averages provided by the National Climatic Data Center of the United States. The temperature and precipitation numbers are 1981-2010 normals while the humidity statistics are 1961-1990 normals.

Myrtle Beach Weather
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