Myrtle Beach weather in August: Myrtle Beach, South Carolina: normal highs, lows, rain and records for August
Myrtle Beach in August has a normal high of 87°F and a normal low of 73°F, a daily mean of 80°F, falling from 87°F on the 1st to 86°F by the 31st. Measurable precipitation falls on 12 days in a normal August, 6.25 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 23°C, 159 mm of precipitation in August.
- NOAA stationNorth Myrtle Beach
- Station IDUSW00093718
- Location33.81°N 78.72°W
- Elevation32 ft (10 m)
- From the center12 miles
- Population40,535
- Jan 56° 37°
- Feb 58° 40°
- Mar 65° 45°
- Apr 72° 53°
- May 79° 62°
- Jun 85° 70°
- Jul 88° 74°
- Aug 87° 73°
- Sep 83° 68°
- Oct 76° 56°
- Nov 66° 46°
- Dec 59° 40°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Myrtle Beach in August?
The normal high is 87°F and the normal low 73°F, for a daily mean of 79.5°F. August is 1.1°F cooler than July and 4.0°F warmer than September. August is the 2nd warmest month of the year in Myrtle Beach and the 2nd wettest. Across the month the normal high falls 1°F, from 87°F on August 1 to 86°F on August 31. From one year to the next August's mean temperature typically moves about 1.4°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 78°F and 81°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 41%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 87°F | 73°F | 41% | 25% |
| August 8 | 87°F | 73°F | 40% | 24% |
| August 15 | 87°F | 73°F | 40% | 25% |
| August 22 | 86°F | 72°F | 39% | 25% |
| August 31 | 86°F | 71°F | 38% | 24% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 87°F | 73°F | 41% | 25% | 13 h 50 min |
| August 2 | 87°F | 73°F | 41% | 25% | 13 h 50 min |
| August 3 | 87°F | 73°F | 41% | 25% | 13 h 50 min |
| August 4 | 87°F | 73°F | 41% | 25% | 13 h 50 min |
| August 5 | 87°F | 73°F | 41% | 25% | 13 h 40 min |
| August 6 | 87°F | 73°F | 41% | 25% | 13 h 40 min |
| August 7 | 87°F | 73°F | 40% | 25% | 13 h 40 min |
| August 8 | 87°F | 73°F | 40% | 24% | 13 h 40 min |
| August 9 | 87°F | 73°F | 40% | 25% | 13 h 40 min |
| August 10 | 87°F | 73°F | 40% | 25% | 13 h 40 min |
| August 11 | 87°F | 73°F | 40% | 25% | 13 h 30 min |
| August 12 | 87°F | 73°F | 40% | 25% | 13 h 30 min |
| August 13 | 87°F | 73°F | 40% | 25% | 13 h 30 min |
| August 14 | 87°F | 73°F | 40% | 25% | 13 h 30 min |
| August 15 | 87°F | 73°F | 40% | 25% | 13 h 30 min |
| August 16 | 87°F | 73°F | 40% | 25% | 13 h 30 min |
| August 17 | 87°F | 73°F | 40% | 25% | 13 h 20 min |
| August 18 | 87°F | 73°F | 40% | 25% | 13 h 20 min |
| August 19 | 86°F | 72°F | 40% | 25% | 13 h 20 min |
| August 20 | 86°F | 72°F | 40% | 25% | 13 h 20 min |
| August 21 | 86°F | 72°F | 40% | 25% | 13 h 20 min |
| August 22 | 86°F | 72°F | 39% | 25% | 13 h 10 min |
| August 23 | 86°F | 72°F | 39% | 25% | 13 h 10 min |
| August 24 | 86°F | 72°F | 39% | 25% | 13 h 10 min |
| August 25 | 86°F | 72°F | 39% | 25% | 13 h 10 min |
| August 26 | 86°F | 72°F | 39% | 25% | 13 h 10 min |
| August 27 | 86°F | 72°F | 39% | 24% | 13 h |
| August 28 | 86°F | 72°F | 38% | 24% | 13 h |
| August 29 | 86°F | 71°F | 38% | 24% | 13 h |
| August 30 | 86°F | 71°F | 38% | 24% | 13 h |
| August 31 | 86°F | 71°F | 38% | 24% | 13 h |
- Normal high
- 87°FAugust average
- Normal low
- 73°FAugust average
- Precipitation
- 6.25 inmonth total
- Days with precipitation
- 120.01 inch or more
- Days at 90°F or more
- 6
- Daylight
- 13 h 50 min to 13 hAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 30
- Sunshine
- 81%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093718; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Myrtle Beach in August?
On a given August day the chance of 0.01 inch or more is 40% on average, highest around August 1 (41%). In all, 6.25 in falls on 12 days of a normal August, 2 of them with an inch or more.
In a normal August in Myrtle Beach, 6 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093718.
What are the records for August in Myrtle Beach?
The warmest August temperature on Myrtle Beach's official record (since 1931) is 104°F, on August 5, 1954; the coldest is 54°F, on August 25, 1952. The wettest August brought 16.48 in (2017).
The August mean against the 1991-2020 normal of 79.5°F: 2021 79.8°F (+0.3), 2022 78.8°F (−0.7), 2023 80.8°F (+1.3), 2024 78.7°F (−0.8), 2025 78.0°F (−1.5), 2026 81.3°F (+1.8). 3 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 79.8°F | +0.3°F | 5.90 in |
| 2022 | 78.8°F | −0.7°F | 6.48 in |
| 2023 | 80.8°F | +1.3°F | 8.00 in |
| 2024 | 78.7°F | −0.8°F | 13.61 in |
| 2025 | 78.0°F | −1.5°F | 13.60 in |
| 2026 | 81.3°F | +1.8°F | 5.35 in |
Source: records: ACIS, NWS threaded record CREthr; recent months: ACIS, station USW00093718. Records and recent months use complete months only.
How does August in Myrtle Beach compare across South Carolina?
Across the 73 places PlainClimate covers in South Carolina, August normal highs run from 76°F in Caesars Head to 92°F in Pelion; Myrtle Beach's is 87°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Myrtle Beach in July88°F by day, 74°F at night
- Myrtle Beach in September83°F by day, 68°F at night
- Myrtle Beach through the yearEvery month, frost dates, records and recent years
- South Carolina in AugustThe statewide normal and the warmest and coolest places
- Pelion: South Carolina's warmest Augustnormal high 92°F