Aiken weather in August

In August, Aiken sees average daytime highs of 90°F and overnight lows near 72°F, with 4.0 in of rain across 13.8 wet days and about 13.2 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 90°F through the month. The sky is clear or mostly clear about 26% 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 Aiken's 11th-clearest and 12th-windiest month. For the whole year in context, see Aiken's year-round climate.

Daytime high
90°
2nd warmest
Overnight low
72°
11th coldest
Rainfall
4.0 in
13.8 wet days
Daylight
13 h 18 min
5:53 AM – 7:09 PM
Cloud cover
59%
11th clearest
Wind
5 mph
12th windiest
Solar energy
5.43 kWh/m²
Travel score
3.6
out of 10

Aiken is city in South Carolina, United States.

Density
562/km²
people per km²
Founded
1835

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 90°F through the month.

A typical August day in Aiken reaches about 90°F in the afternoon and slips back to 72°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 84°F and 96°F. Set against its neighbours, August runs about 1°F cooler than July and about 5°F warmer than September.

60°70°80°90°100°151015202531
Avg high (°F)Avg low (°F)
19173
29173
39173
49173
59173
69173
79173
89173
99073
109073
119073
129073
139073
149073
159073
169072
179072
189072
199072
209072
219072
229072
238972
248972
258971
268971
278971
288971
298971
308971
318870

How August really feels in Aiken

Once humidity and wind are folded in, August averages 31 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
31
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.

Aiken weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan57° / 37°3.69.3104.1
Feb60° / 40°3.68.410.85.0
Mar68° / 46°3.88.811.76.6
Apr76° / 54°3.27.912.87.2
May83° / 62°3.09.113.76.0
Jun88° / 70°4.213.614.24.0
Jul91° / 73°4.215.8143.1
Aug90° / 72°4.013.813.23.6
Sep85° / 66°3.39.312.25.5
Oct76° / 55°3.16.711.27.5
Nov66° / 45°2.8710.36.7
Dec59° / 40°3.599.84.7

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 23% of August, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24654
34654
44555
54654
64753
74753
84753
94753
104852
114852
124951
134951
144852
154852
164951
174951
185050
195050
205149
215050
225050
235149
245149
255149
265149
275149
285248
295248
305347
315347

Chance of precipitation in August

Any precipitation

Aiken gets around 4.0 in of rain over 13.8 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 45% and peaks near 52% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
152
252
351
450
550
649
749
848
948
1047
1147
1246
1346
1446
1546
1645
1745
1845
1944
2044
2143
2243
2342
2441
2541
2640
2739
2839
2938
3038
3137

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 54% of days. Sticky, muggy-or-worse air turns up on roughly 86% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
113624651
213624651
313624651
413725631
513725622
613725622
713725622
813726603
913726603
1013727593
1113727593
1213728583
1313728574
1413729564
1513829554
1613830544
1713830544
1813931524
1913932523
20131032513
21131033503
22131033503
23131134492
24131134482
25141234472
26141234472
27151334461
28251434441
29261533431
30271533421
31271633411

Wind in August

Winds average 5 mph in August, the calmest month.

Across August, daily wind ranges from about 5 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 5:42 AM to 6:04 AM, and sunset from 7:23 PM to 6:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:427:23
213.75:437:23
313.65:447:22
413.65:457:21
513.65:457:20
613.55:467:19
713.55:477:18
813.55:477:17
913.55:487:16
1013.45:497:15
1113.45:507:14
1213.45:507:13
1313.35:517:12
1413.35:527:11
1513.35:537:10
1613.35:537:09
1713.25:547:08
1813.25:557:06
1913.25:557:05
2013.15:567:04
2113.15:577:03
2213.15:587:02
2313.05:587:00
2413.05:596:59
2513.06:006:58
2612.96:006:56
2712.96:016:55
2812.96:026:54
2912.86:036:53
3012.86:036:51
3112.86:046:50

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.43 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 6.21 kWh/m² in May across the year — August's 5.43 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.1Bright
315.1Bright
Planning a trip in August

Is August a good time to visit Aiken?

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

3.6
Sightseeing
11th-best month of the year
5.8
Beach & pool
6th-best month of the year

August is a weaker month for outdoor sightseeing in Aiken.

What to pack for Aiken in August

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

In August, Aiken sees daytime highs around 90°F and nights near 72°F. Pack light clothes. Worth having: rain gear and sun protection. About 14 days see rain.

light clothesrain gearsun protection

UV index in Aiken in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Aiken peaks around June 22 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 highHighModerateJun 22UV 9Dec 20UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep7Very high
Oct5High
Nov4Moderate
Dec3Moderate

Air quality in Aiken 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 Aiken is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (January, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodJul 1718 µg/m³Jan 108 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar15Moderate
Apr11Good
May12Moderate
Jun16Moderate
Jul18Moderate
Aug16Moderate
Sep12Good
Oct9Good
Nov9Good
Dec8Good
Location & terrain

Where is Aiken?

Aiken sits at 33.6°N, 81.7°W, 515 ft above sea level, in United States. The nearest listed city is North Augusta, 15 mi away.

Topography around Aiken

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

Within 2 miles, the terrain around Aiken has only modest variations in elevation — a maximum elevation change of 272 ft around an average of 505 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 466 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,175 ft.

The land around Aiken is covered by trees (70%) within 2 miles, trees (71%) and grassland (23%) within 10 miles, and trees (78%) within 50 miles.

2 miles
272 ft
10 miles
466 ft
50 miles
1,175 ft
treesgrasslandcroplandartificial surfaceswater
August weather nearby: North Augusta 15 mi · Augusta 16 mi · Martinez 21 mi · Evans 24 mi · Lexington 40 mi · Seven Oaks 47 mi · West Columbia 48 mi · Saint Andrews 48 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 Aiken (33.5604°, -81.7195°, elevation 515 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. 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).