National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Myrtle Beach International Airport (KMYR)

Lat: 33.68°NLon: 78.93°WElev: 25ft.

Mostly Cloudy

85°F

29°C

Humidity 94%
Wind Speed SE 3 mph
Barometer 30.00 in (1015.7 mb)
Dewpoint 83°F (28°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 20 Aug 7:53 am EDT
Extended Forecast for

Surfside Beach SC

Heat Advisory August 20, 11:00am until August 20, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Sunny, with a high near 91. Heat index values as high as 107. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 91 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 78. South wind 3 to 7 mph.

    Low: 78 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms between 2pm and 5pm. Mostly sunny, with a high near 90. Heat index values as high as 108. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 75. Southwest wind 5 to 8 mph, with gusts as high as 16 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 75 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 89. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. Low around 74. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    Showers then
    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 75.

    Low: 75 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 91. Heat index values as high as 107. Calm wind becoming south 5 to 9 mph in the afternoon.
Tonight
Partly cloudy, with a low around 78. South wind 3 to 7 mph.
Friday
A chance of showers and thunderstorms between 2pm and 5pm. Mostly sunny, with a high near 90. Heat index values as high as 108. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 75. Southwest wind 5 to 8 mph, with gusts as high as 16 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 89. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. Low around 74. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 75.
Monday
Sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 75.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Surfside Beach SC
 33.61°N 79°W (Elev. 26 ft)
Last Update:
6:03 am EDT Aug 20, 2026
Forecast Valid:
8am EDT Aug 20, 2026-6pm EDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation