Bristol weather in August

In August, Bristol sees average daytime highs of 82°F and overnight lows near 65°F, with 2.8 in of rain across 10.4 wet days and about 13.4 hours of daylight. It is the 2nd-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 82°F through the month. The sky is clear or mostly clear about 34% of the time in August, and the air most often feels muggy.

Daylight stretches from about 13 h 54 min at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Bristol's 4th-clearest and 12th-windiest month. For the whole year in context, see Bristol's year-round climate.

Daytime high
82°
2nd warmest
Overnight low
65°
11th coldest
Rainfall
2.8 in
10.4 wet days
Daylight
13 h 24 min
5:51 AM – 7:15 PM
Cloud cover
54%
4th clearest
Wind
3 mph
12th windiest
Solar energy
5.39 kWh/m²
Travel score
6.3
out of 10

Bristol is city in Sullivan County, Tennessee, United States.

Density
315/km²
people per km²
Founded
1856

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 82°F through the month.

A typical August day in Bristol reaches about 82°F in the afternoon and slips back to 65°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 75°F and 88°F. Set against its neighbours, August runs on par with July and about 5°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18266
28266
38266
48265
58265
68265
78265
88265
98265
108265
118265
128265
138265
148265
158265
168265
178265
188265
198265
208264
218264
228264
238264
248264
258264
268264
278264
288264
298163
308163
318163

How August really feels in Bristol

Once humidity and wind are folded in, August averages 0 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
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Bristol weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan46° / 29°4.012.43.99.81.1
Feb49° / 32°3.711.63.510.61.9
Mar57° / 38°4.5132.311.73.9
Apr67° / 46°3.911.90.512.95.8
May73° / 54°3.612.8013.96.3
Jun80° / 62°3.213.2014.56.1
Jul83° / 66°3.313.5014.25.5
Aug82° / 65°2.810.4013.46.3
Sep77° / 58°3.08.3012.27.1
Oct67° / 47°2.88.90.211.16.5
Nov56° / 37°3.29.70.6104.0
Dec48° / 32°4.011.72.89.51.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 22% of August, with mostly cloudy or overcast conditions the remaining 44%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35545
45545
55545
65545
75545
85545
95545
105545
115446
125446
135446
145545
155545
165545
175644
185644
195743
205842
215842
225842
235842
245842
255842
265842
275842
285842
295941
305941
315941

Chance of precipitation in August

Any precipitation

Bristol gets around 2.8 in of rain over 10.4 wet days in August, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 43% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
143
243
342
442
541
641
741
840
940
1039
1139
1239
1338
1438
1537
1636
1735
1834
1933
2032
2131
2230
2329
2429
2529
2628
2728
2828
2928
3027
3127

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 44% of days. Sticky, muggy-or-worse air turns up on roughly 46% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
13934504
231034494
331034494
431134493
531135483
631135483
731235473
831235473
931236473
1031236472
1131236472
1231336472
1331336462
1431336462
1531336452
1631337452
1741337442
1841338432
1941338432
2041339421
2141339421
2251340411
2351340411
2451440411
2561440401
2661440401
2771539390
2871539380
2981639370
3081739360
3191838350

Wind in August

Winds average 3 mph in August, the calmest month.

Across August, daily wind ranges from about 3 mph on the calmest days to 4 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
14calm
24calm
34calm
44calm
54calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 54 min at the start of August to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over August. Sunrise moves from 5:38 AM to 6:03 AM, and sunset from 7:31 PM to 6:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.95:387:31
213.95:397:30
313.85:407:30
413.85:417:29
513.85:417:28
613.75:427:27
713.75:437:25
813.75:447:24
913.65:457:23
1013.65:467:22
1113.65:467:21
1213.55:477:20
1313.55:487:19
1413.55:497:18
1513.45:507:16
1613.45:517:15
1713.45:517:14
1813.35:527:13
1913.35:537:11
2013.35:547:10
2113.25:557:09
2213.25:567:07
2313.25:567:06
2413.15:577:05
2513.15:587:03
2613.05:597:02
2713.06:007:00
2813.06:016:59
2912.96:016:57
3012.96:026:56
3112.96:036:54

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.39 kWh/m².

For context, solar energy here swings from a low near 2.09 kWh/m² to a high of 6.06 kWh/m² in June across the year — August's 5.39 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
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.1Bright
315.1Bright
Planning a trip in August

Is August a good time to visit Bristol?

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

6.3
Sightseeing
3rd-best month of the year
6.7
Beach & pool
1st-best month of the year

August is a reasonable time to visit Bristol for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Bristol in August

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

In August, Bristol sees daytime highs around 82°F and nights near 65°F. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Bristol 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 Bristol peaks around July 13 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highHighModerateJul 13UV 10Dec 20UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7High
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep7High
Oct5Moderate
Nov4Moderate
Dec2Moderate

Air quality in Bristol 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 Bristol is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (December, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1517 µg/m³Dec 196 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar9Good
Apr11Good
May13Moderate
Jun16Moderate
Jul18Moderate
Aug15Moderate
Sep11Good
Oct7Good
Nov7Good
Dec6Good
Location & terrain

Where is Bristol?

Bristol sits at 36.6°N, 82.2°W, 1,677 ft above sea level, in United States. The nearest listed city is Bristol, 0.0 mi away.

Topography around Bristol

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

Within 2 miles, the terrain around Bristol has only modest variations in elevation — a maximum elevation change of 597 ft around an average of 1,772 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,411 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,486 ft.

The land around Bristol is covered by trees (56%), artificial surfaces (22%) and grassland (21%) within 2 miles, trees (60%) and grassland (33%) within 10 miles, and trees (80%) within 50 miles.

2 miles
597 ft
10 miles
1,411 ft
50 miles
5,486 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Bristol 0.0 mi · Kingsport 21 mi · Johnson City 22 mi · Boone 39 mi · Greeneville 47 mi · Lenoir 60 mi · Morganton 65 mi · Morristown 67 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 Bristol (36.5951°, -82.1887°, elevation 1,677 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).