Myrtle Beach weather in August 2025

Expect 90°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Myrtle Beach in August. Check more long-term weather averages for Myrtle Beach in August before you book your next holiday to South Carolina in 2025/2026.

  • 90°F maximum daytime temperature in August in Myrtle Beach90
    90°F max day temperature
  • 8 hours of sunshine per day
  • 12 days with some rainfall in August in Myrtle Beach12
    12 days with some rainfall
  • 70°F minimum night-time temperature in August in Myrtle Beach70
    70°F min night temperature
  • 13 hours of daylight per day in August in Myrtle Beach13
    13 hours of daylight per day
  • High heat & humidity in August in Myrtle BeachH
    High heat & humidity
  • 5.7 inches monthly rainfall in August in Myrtle Beach5.7
    5.7 inches of monthly rainfall
  • UV (maximum) index 10 (Very High) in August in Myrtle Beach10
    10 (Very High) UV index
  • 82°F sea temperature in August in Myrtle Beach82
    82°F sea temperature

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The August weather guide for South Carolina (Myrtle Beach) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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How hot is it in Myrtle Beach in August?

Daytime temperatures usually reach 90°F in Myrtle Beach in August with high heat and humidity, falling to 70°F at night.

How sunny is it in Myrtle Beach in August?

There are normally 8 hours of bright sunshine each day in Myrtle Beach in August - that's 61% of daylight hours.

How warm is the sea around Myrtle Beach in August?

The average sea temperature around Myrtle Beach in August is 82°F.

Does it rain in Myrtle Beach in August?

There are usually 12 days with some rain in Myrtle Beach in August and the average monthly rainfall is 5.7 inches.

What is the chance of a hurricane in Myrtle Beach in August?

On average 1.1 days in August in Myrtle Beach are likely to be affected by the passage of one or more tropical storms.

Myrtle Beach August sunrise & sunset times

Browse the sunrise and sunset times for Myrtle Beach in August 2025. Select a month to view Myrtle Beach sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:28 19:15
Saturday, 16th August 2025 05:39 19:00
Sunday, 31st August 2025 05:49 18:42

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