Myrtle Beach, SC weather in August
Myrtle Beach is warm and oppressively humid in August, with frequent rain: highs average 87°F and nights drop to about 70°F. Rain falls on about 11 days. This is the peak of the warm season in Myrtle Beach.
- Normal high
- 87°F
- Normal low
- 70°F
- Wet days
- 11
- 6.1 in total
- Muggy days
- 30
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 87°F | 86°F |
| Normal low | 71°F | 68°F |
| Chance of a wet day | 37% | 31% |
| Sunrise / sunset | 6:27 am / 8:16 pm | 6:48 am / 7:42 pm |
| Daylight | 13.8 h | 12.9 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical August day
- 6 am72°Fdew point 70°F
- 9 am80°Fdew point 71°F
- Noon86°Fdew point 70°F
- 3 pm88°Fdew point 69°F
- 6 pm84°Fdew point 70°F
- 9 pm77°Fdew point 71°F
NOAA hourly normals (local standard time) from Florence Rgnl Airport (59 mi away); average wind 6 mph; clear or few clouds in 56% of daytime hours, mostly cloudy or overcast in 30%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph20 of 31
- Hot dayshigh 90°F or more6 of 31
- Muggy daysdaily mean dew point 65°F or more30 of 31
- Wet daysat least 0.01 in of rain or melted snow11 of 31
- Notable rainat least 0.10 in8 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 6.1 in; a dry August brings about 4.2 in and a wet one about 7.9 in (25th and 75th percentiles). About 4 days bring half an inch or more, and about 2 an inch or more.
How August varies from year to year
- Warmest August, 1991-20202006: average high 89°F
- Coolest August2004: average high 84°F
- Wettest August2004: 14.8 in
- Driest August1997: 1.1 in
- Highest reading100°F (August 1, 2002)
- Lowest reading54°F (August 13, 2006)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 87°F | 87°F | 83°F |
| Normal low | 72°F | 70°F | 65°F |
| Wet days | 11 | 11 | 9 |
| Comfortable days | – | 0 | 3 |
| Daylight | 14.1 h | 13.4 h | 12.4 h |
Highs change by 0°F from July and -4°F into September.
Nearby alternatives in August
- Warmer: Columbia, SC125 mi · high 94°F · 10 wet days
How Myrtle Beach ranks in August
- Normal high183rd warmest of 378 cities; 3rd of 5 in South Carolina
- Wet days307th driest of 378
- Comfortable days252nd most of 341
What to pack for Myrtle Beach in August
- Light, breathable clothing – highs near 87°F and about 30 muggy days
- A rain jacket or umbrella – rain on about 11 days
- A swimsuit – about 20 beach days
Heating and cooling
August has 0 heating degree days and 411 cooling degree days (base 65°F), 9% of the year's total heating and cooling demand.
Questions
How hot is Myrtle Beach in August?
The normal high is 87°F and the normal low is 70°F. From 1991 to 2020 the hottest August reading was 100°F (August 1, 2002).
Does it rain a lot in Myrtle Beach in August?
About 11 days in August have at least 0.01 in of precipitation, and the normal total is 6.1 in. The wettest August in 1991-2020 was in 2004 (14.9 in); the driest was in 1997 (1.1 in).
Where the numbers come from
- Temperature and frost dates: Myrtle Beach (USC00386153), 5.8 mi NE of the city center, 39 ft . NOAA normals and daily records, 1991-2020.
- Rain: Brookgreen Gardens (USC00381093), 17 mi SW of the city center, 20 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Florence Rgnl Airport (USW00013744), 59 mi NW of the city center, 146 ft (121 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Grand Strand Airport (747915-93718), 13 mi NE of the city center, 29 ft . Hourly observations, 1991-2020.
- Not available for this location: snowfall and snow depth (no station close enough or similar enough in elevation).