Myrtle Beach Weather in March

As spring approaches, Myrtle Beach in South Carolina enjoys increasingly comfortable temperatures and sunny skies during March.

This page gives detailed information on the typical March temperature, precipitation, sun and humidity for Myrtle Beach. The temperature and rainfall numbers here are historical averages based on climate data gathered at Grand Strand Airport. The sunshine and humidity measurements are averages from Charleston International Airport.

Temperature Weather iconTemperature

65 °F March average high 18 °C
45 °F March average low 7 °C
23 days 60 °F max. or more (16 °C)
10 days 40 °F min. or less (4 °C)

The temperature rises nearly every day in March to over 50 degrees Fahrenheit (10 degrees Celsius) at Myrtle Beach. The resort city averages 9 days this month when the thermometer reaches into the 70s °F (over 21 °C). Temperatures above 80 °F (27 °C) don't happen every year here during March.

The thermometer dips to below freezing on an average of 3 nights. But March normally doesn't get as cold as 20 °F (-8 °C).

Rainy Weather iconRain

3.6 in total precipitation 91 mm
10 days of rain

Half the time, Myrtle Beach receives 2.1 to 4.7 inches (53 to 120 mm) of rainfall in March. One in four years has drier weather, while another one in four is wetter.

Sunny Weather iconSun

66 % sunshine
9 days clear skies

The sun's rays reach the ground in Myrtle Beach during 66 percent of daylight hours on average in March, for a total of 246 hours in the month. Typically on 9 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in March at the city lasts for 11 hours and 59 minutes a day on average. The shortest day of the month is the 1st with 11 hours and 29 minutes of daylight. By the end of the month, the days have lengthened to 12:31 from sunrise to sunset. These durations can vary by a minute or two from year to year.

Humid Weather iconHumidity

68 % March average humidity

The relative humidity in Myrtle Beach during March usually peaks at 83 percent in the morning then drops to 50 percent by early afternoon.

Local Time1 am4 am7 am10 am1 pm4 pm7 pm10 pm
Humidity % 80 82 83 61 50 51 64 75

The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals.

Myrtle Beach Weather
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