Myrtle Beach Weather in January

January is the coldest month at Myrtle Beach, South Carolina and some nights have frost. Even so, most days warm up to a comfortable temperature.

This page gives detailed information on the typical January 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

55 °F January average high 13 °C
34 °F January average low 1 °C

In most years, Myrtle Beach averages a daily maximum temperature for January that's between 51 and 59 degrees Fahrenheit (11 to 15 degrees Celsius). The minimum temperature usually falls between 31 and 37 °F (-1 to 3 °C).

January is the coldest month overall for Myrtle Beach and the 10th to 12th are its chilliest days. They have daily highs averaging 54.6 °F (12.6 °C) and lows of 33.7 °F (0.9 °C).

23 days 50 °F max. or more (10 °C)
13 days 32 °F min. or less (0 °C)

The temperature rises nearly every day during January to over 40 °F (4 °C) in Myrtle Beach. The city averages 10 days this month when the thermometer reaches into the 60s °F (over 16 °C). A temperature of 70 °F (21 °C) or above is a rare occurrence here this time of year.

The thermometer dips to 20 °F (-8 °C) or below on an average of 2 nights. But January does not normally get as cold as 10 °F (-12 °C).

Rainy Weather iconRain

3.8 in total precipitation 95 mm
9 days of rain

January is an average month for amount of rainfall at Myrtle Beach.

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 January, for a total of 178 hours in the month. Typically on 9 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in January at the beachside city lasts for 10 hours and 12 minutes a day on average. The shortest day of the month is the 1st with 9 hours and 58 minutes of daylight. By the end of the month, the days have lengthened to 10:33 from sunrise to sunset. These durations can vary by a minute or two from year to year.

Humid Weather iconHumidity

70 % January average humidity

The relative humidity in Myrtle Beach during January usually peaks at 80 percent in the morning then drops to 54 percent by late afternoon.

Local Time1 am4 am7 am10 am1 pm4 pm7 pm10 pm
Humidity % 78 80 80 69 55 54 68 75
Reference

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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