Myrtle Beach weather in August

In August, Myrtle Beach sees average daytime highs of 85°F and overnight lows near 74°F, with 7.0 in of rain across 18.7 wet days and about 13.3 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 85°F through the month. The sky is clear or mostly clear about 27% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 13 h 42 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Myrtle Beach's 11th-clearest and 12th-windiest month. For the whole year in context, see Myrtle Beach's year-round climate.

Daytime high
85°
2nd warmest
Overnight low
74°
11th coldest
Rainfall
7.0 in
18.7 wet days
Daylight
13 h 18 min
5:42 AM – 6:58 PM
Cloud cover
61%
11th clearest
Wind
6 mph
12th windiest
Solar energy
5.32 kWh/m²
Travel score
4.1
out of 10

Myrtle Beach is coastal city in Horry County, South Carolina, United States.

Density
514/km²
people per km²
Founded
1936

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 85°F through the month.

A typical August day in Myrtle Beach reaches about 85°F in the afternoon and slips back to 74°F overnight — a 11°F spread between the day's warmth and the night's chill. On most days the high lands between 81°F and 90°F. Set against its neighbours, August runs on par with July and about 4°F warmer than September.

60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18675
28675
38675
48675
58675
68675
78675
88675
98675
108675
118674
128674
138674
148674
158674
168674
178674
188674
198574
208574
218574
228574
238574
248573
258573
268573
278573
288573
298473
308473
318473

How August really feels in Myrtle Beach

Once humidity and wind are folded in, August averages 30 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
30
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Myrtle Beach weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan56° / 40°3.59.1104.1
Feb59° / 42°3.48.310.74.7
Mar65° / 48°3.89.211.76.1
Apr72° / 56°3.1812.87.1
May78° / 64°3.410.413.76.8
Jun84° / 72°5.015.314.24.8
Jul87° / 75°6.418.9143.8
Aug85° / 74°7.018.713.34.1
Sep82° / 69°6.212.712.25.9
Oct74° / 59°3.77.811.27.3
Nov65° / 49°3.17.410.36.5
Dec59° / 43°3.78.79.84.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24258
34357
44357
54357
64357
74456
84456
94456
104456
114456
124555
134555
144555
154654
164654
174654
184753
194654
204753
214753
224753
234753
244753
254852
264753
274852
284852
294852
304951
314951

Chance of precipitation in August

Any precipitation

Myrtle Beach gets around 7.0 in of rain over 18.7 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 60% and peaks near 65% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
165
264
364
464
563
663
763
863
963
1063
1163
1263
1363
1463
1563
1663
1762
1862
1961
2061
2160
2259
2358
2457
2556
2655
2753
2852
2951
3050
3149

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the oppressive band about 53% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10285337
20285436
30395236
40395236
503105235
603105235
703115135
803115135
903115036
1002115136
1102125036
1202125036
1302125036
1402125135
1502125135
1603135034
1703135232
1803135331
1903145330
2003145528
2103145627
2203155626
2304155625
2404165624
2514175523
2615175621
2715185620
2816195519
2916205518
3017215417
3127225316

Wind in August

Winds average 6 mph in August, the calmest month.

Across August, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 42 min at the start of August to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over August. Sunrise moves from 5:31 AM to 5:53 AM, and sunset from 7:12 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:317:12
213.75:327:11
313.65:327:11
413.65:337:10
513.65:347:09
613.65:347:08
713.55:357:07
813.55:367:06
913.55:377:05
1013.45:377:04
1113.45:387:03
1213.45:397:02
1313.45:407:01
1413.35:407:00
1513.35:416:59
1613.35:426:58
1713.25:436:56
1813.25:436:55
1913.25:446:54
2013.15:456:53
2113.15:456:52
2213.15:466:50
2313.05:476:49
2413.05:486:48
2513.05:486:47
2612.95:496:45
2712.95:506:44
2812.95:506:43
2912.85:516:41
3012.85:526:40
3112.85:536:39

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.32 kWh/m².

For context, solar energy here swings from a low near 2.47 kWh/m² to a high of 6.23 kWh/m² in May across the year — August's 5.32 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.2Bright
235.2Bright
245.2Bright
255.1Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in August

Hazard calendar for Myrtle Beach

In seasonPeak

In August, Myrtle Beach sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Myrtle Beach sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Myrtle Beach?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.1
Sightseeing
10th-best month of the year
5.6
Beach & pool
5th-best month of the year

August is a reasonable time to visit Myrtle Beach for sightseeing.

What to pack for Myrtle Beach in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Myrtle Beach sees daytime highs around 85°F and nights near 74°F. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

Sea temperature near Myrtle Beach in August

The nearest coast averages about 82°F in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 82°F and coldest in February near 60°F.

It's comfortable for a long swim from Apr 28 to Nov 16 — about 6.7 months when the water holds above 68°F.

60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan61Cool
Feb60Cool
Mar61Cool
Apr65Cool
May72Refreshing
Jun79Warm
Jul82Warm
Aug82Warm
Sep80Warm
Oct75Refreshing
Nov68Refreshing
Dec64Cool

UV index in Myrtle Beach in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Myrtle Beach peaks around July 13 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 13UV 10Dec 19UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr8Very high
May9Very high
Jun9Very high
Jul10Very high
Aug8Very high
Sep8Very high
Oct5High
Nov4Moderate
Dec3Moderate

Air quality in Myrtle Beach in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Myrtle Beach is worst in March — around 21 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (December, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodMar 1719 µg/m³Dec 146 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb12Good
Mar21Moderate
Apr12Moderate
May11Good
Jun15Moderate
Jul16Moderate
Aug14Moderate
Sep9Good
Oct6Good
Nov7Good
Dec6Good
Location & terrain

Where is Myrtle Beach?

Myrtle Beach sits at 33.7°N, 78.9°W, 26 ft above sea level, in United States. The nearest listed city is Socastee, 6.2 mi away.

Topography around Myrtle Beach

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Myrtle Beach.

Within 2 miles, the terrain around Myrtle Beach has only modest variations in elevation — a maximum elevation change of 92 ft around an average of 16 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 125 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 210 ft.

The land around Myrtle Beach is covered by water (43%) and artificial surfaces (27%) within 2 miles, water (49%) and trees (31%) within 10 miles, and trees (56%) and water (30%) within 50 miles.

2 miles
92 ft
10 miles
125 ft
50 miles
210 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Socastee 6.2 mi · Conway 14 mi · North Myrtle Beach 15 mi · Florence 61 mi · Leland 62 mi · Lumberton 65 mi · Wilmington 66 mi · Laurinburg 82 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Myrtle Beach (33.6891°, -78.8867°, elevation 26 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).