Myrtle Beach Weather in October

October's weather at Myrtle Beach, South Carolina is much milder than the previous months. Most days are pleasantly warm, plus there's less rain.

This page gives detailed information on the typical October temperature, precipitation, sun, humidity and storms 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

76 °F October average high 24 °C
56 °F October average low 14 °C
26 days 70 °F max. or more (21 °C)
8 days 50 °F min. or less (10 °C)

Usually every October day warms to over 60 degrees Fahrenheit (16 degrees Celsius) in Myrtle Beach. The city averages ten days this month when the thermometer reaches into the 80s °F (over 27 °C). Most years, the temperature does not go above 90 °F (32 °C) during October.

The thermometer dips to 40 °F (4 °C) or below on an average of 1 night. But it's unusual for October to have frost.

Rainy Weather iconRain

4.2 in total precipitation 107 mm
9 days of rain

Half the time, Myrtle Beach receives 1.6 to 5.7 inches (40 to 144 mm) of rainfall in October. One in four years has drier weather, while another one in four is wetter.

Sunny Weather iconSun

63 % sunshine
11 days clear skies

The sun's rays reach the ground in Myrtle Beach during 63 percent of daylight hours on average in October, for a total of 221 hours in the month. Typically on 11 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in October at the holiday destination lasts for 11 hours and 19 minutes a day on average. The longest day of the month is the 1st with 11 hours and 50 minutes of daylight. By the end of the month, the days have shortened to 10:50 from sunrise to sunset. These durations can vary by a minute or two from year to year.

Humid Weather iconHumidity

74 % October average humidity

The relative humidity in Myrtle Beach during October usually peaks at 87 percent in the morning then drops to 54 percent by early afternoon.

Local Time1 am4 am7 am10 am1 pm4 pm7 pm10 pm
Humidity % 86 87 87 66 54 55 75 83

Stormy Weather iconStorms

2 days rainfall of 0.5 inches (13 mm) or more
8 % chance a named storm approaches

There's a 4 percent probability that a hurricane will approach within 100 miles (165 km) of Myrtle Beach during October. The chance of a major category 3 to 5 hurricane reaching the area is 1 percent.


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. The named storm probabilities come from the Atlantic Oceanographic and Meteorological Laboratory, Hurricane Research Division.

Myrtle Beach Weather
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