Myrtle Beach Weather in May

Weather that's mostly sunny and dry along with warm temperatures make May a delightful month at Myrtle Beach in South Carolina.

This page gives detailed information on the typical May 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

79 °F May average high 26 °C
59 °F May average low 15 °C

In most years, Myrtle Beach averages a daily maximum temperature for May that's between 78 and 81 degrees Fahrenheit (25 to 27 degrees Celsius). The minimum temperature usually falls between 56 and 62 °F (13 to 17 °C).

The days at Myrtle Beach warm steadily during May. By the end of the month, the temperature has climbed around 6 °F (3 °C) above what it was at the start.

14 days 80 °F max. or more (27 °C)
16 days 60 °F min. or less (16 °C)

The temperature rises nearly every day in May to over 70 °F (21 °C) at Myrtle Beach. The city averages one or two days this month when the thermometer reaches into the 90s °F (over 32 °C). Temperatures above 100 °F (38 °C) are not expected here during May.

The thermometer dips to 50 °F (10 °C) or below on an average of 4 nights. Only rarely does May get as cold as 40 °F (4 °C).

Rainy Weather iconRain

3.4 in total precipitation 87 mm
8 days of rain

May is less rainy than most months at Myrtle Beach.

Sunny Weather iconSun

68 % sunshine
8 days clear skies

The sun's rays reach the ground in Myrtle Beach during 68 percent of daylight hours on average in May, for a total of 294 hours in the month. Typically on 8 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in May at this vacation destination lasts for 13 hours and 55 minutes a day on average. The shortest day of the month is the 1st with 13 hours and 32 minutes of daylight. By the end of the month, the days have lengthened to 14:14 from sunrise to sunset. These durations can vary by a minute or two from year to year.

Humid Weather iconHumidity

73 % May average humidity

The relative humidity in Myrtle Beach during May usually peaks at 89 percent in the morning then drops to 53 percent by early afternoon.

Local Time1 am4 am7 am10 am1 pm4 pm7 pm10 pm
Humidity % 87 89 85 61 53 55 68 82

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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