Houston weather in August

In August, Houston sees average daytime highs of 92°F and overnight lows near 75°F, with 3.9 in of rain across 13.3 wet days and about 13.1 hours of daylight. It is the 1st-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 92°F through the month. The sky is clear or mostly clear about 37% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 13 h 24 min at the start of August to 12 h 42 min by month's end. Set against the rest of the year, August is Houston's 7th-clearest and 12th-windiest month. For the whole year in context, see Houston's year-round climate.

Daytime high
92°
1st warmest
Overnight low
75°
11th coldest
Rainfall
3.9 in
13.3 wet days
Daylight
13 h 06 min
5:53 AM – 6:58 PM
Cloud cover
55%
7th clearest
Wind
5 mph
12th windiest
Solar energy
5.79 kWh/m²
Travel score
3.2
out of 10

Houston is seat of Harris County, and largest city in State of Texas, United States.

Density
1,342/km²
people per km²
Founded
1836

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 92°F through the month.

A typical August day in Houston reaches about 92°F in the afternoon and slips back to 75°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 87°F and 97°F. Set against its neighbours, August runs on par with July and about 4°F warmer than September.

70°80°90°100°151015202531
Avg high (°F)Avg low (°F)
19276
29276
39276
49276
59276
69276
79276
89276
99276
109276
119276
129276
139276
149276
159276
169276
179275
189275
199275
209275
219275
229175
239175
249175
259175
269175
279175
289174
299174
309174
319174

How August really feels in Houston

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
14 feel dangerously hot (≥ 102°F)
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.

Houston weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan63° / 45°4.21010.35.6
Feb66° / 49°3.3910.96.1
Mar72° / 55°3.79.211.86.8
Apr78° / 61°3.88.912.76.9
May85° / 69°3.59.813.55.5
Jun89° / 74°4.512.813.93.8
Jul91° / 76°3.612.713.73.3
Aug92° / 75°3.913.313.13.2
Sep88° / 71°4.611.812.24.4
Oct81° / 62°4.18.711.36.8
Nov71° / 53°4.18.310.57.0
Dec65° / 47°4.29.610.15.9

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15941
25941
35941
46040
56040
66040
76040
86040
96040
106040
115941
125842
135842
145842
155743
165743
175644
185644
195545
205446
215446
225347
235347
245248
255248
265248
275248
285248
295248
305347
315347

Chance of precipitation in August

Any precipitation

Houston gets around 3.9 in of rain over 13.3 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 43% and peaks near 46% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
139
239
339
439
539
639
739
840
940
1040
1141
1241
1342
1442
1543
1643
1744
1844
1945
2045
2145
2245
2346
2446
2546
2646
2746
2845
2945
3045
3145

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 60% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10156430
20156430
30146530
40146530
50146530
60146629
71146529
81146430
91146430
101146430
111146331
121156132
131156132
141156033
151165933
161165933
171165933
181165933
191275733
201275733
211285633
221285732
231395532
241395631
251395730
2603105829
2704105828
2814115727
2915115726
3015125725
3116125724

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 6 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
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 24 min at the start of August to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over August. Sunrise moves from 5:44 AM to 6:02 AM, and sunset from 7:11 PM to 6:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:447:11
213.45:457:10
313.45:457:09
413.45:467:09
513.45:477:08
613.35:477:07
713.35:487:06
813.35:487:05
913.35:497:05
1013.25:507:04
1113.25:507:03
1213.25:517:02
1313.25:517:01
1413.15:527:00
1513.15:536:59
1613.15:536:58
1713.15:546:57
1813.05:546:56
1913.05:556:55
2013.05:556:54
2112.95:566:53
2212.95:576:52
2312.95:576:51
2412.95:586:49
2512.85:586:48
2612.85:596:47
2712.85:596:46
2812.76:006:45
2912.76:016:44
3012.76:016:42
3112.76:026:41

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.79 kWh/m².

For context, solar energy here swings from a low near 2.6 kWh/m² to a high of 6.21 kWh/m² in July across the year — August's 5.79 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.1Intense
66.1Intense
76.1Intense
86.1Intense
96.0Intense
106.0Intense
116.0Bright
126.0Bright
135.9Bright
145.9Bright
155.8Bright
165.8Bright
175.8Bright
185.7Bright
195.7Bright
205.6Bright
215.6Bright
225.6Bright
235.5Bright
245.5Bright
255.5Bright
265.4Bright
275.4Bright
285.4Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in August

Hazard calendar for Houston

In seasonPeak

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

Houston 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 Houston?

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

3.2
Sightseeing
12th-best month of the year
5.8
Beach & pool
7th-best month of the year

August is a weaker month for outdoor sightseeing in Houston.

What to pack for Houston in August

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

In August, Houston sees daytime highs around 92°F and nights near 75°F. Pack light clothes. Worth having: rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Houston in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Houston peaks around July 20 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 20UV 11Dec 21UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar6High
Apr10Very high
May10Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep8Very high
Oct6High
Nov5Moderate
Dec4Moderate

Air quality in Houston 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 Houston is worst in July — around 24 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1523 µg/m³Dec 2010 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar12Moderate
Apr12Moderate
May16Moderate
Jun20Moderate
Jul24Moderate
Aug18Moderate
Sep15Moderate
Oct11Good
Nov10Good
Dec10Good
Location & terrain

Where is Houston?

Houston sits at 29.8°N, 95.4°W, 39 ft above sea level, in United States. The nearest listed city is West University Place, 5.0 mi away.

Topography around Houston

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

Within 2 miles, the terrain around Houston has only modest variations in elevation — a maximum elevation change of 190 ft around an average of 49 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 259 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 476 ft.

The land around Houston is covered by artificial surfaces (72%) within 2 miles, artificial surfaces (47%) and trees (41%) within 10 miles, and trees (43%) and grassland (27%) within 50 miles.

2 miles
190 ft
10 miles
259 ft
50 miles
476 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: West University Place 5.0 mi · Bellaire 6.8 mi · South Houston 11 mi · Pasadena 11 mi · Cloverleaf 12 mi · Aldine 12 mi · Alief 14 mi · Missouri City 14 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 Houston (29.7633°, -95.3633°, elevation 39 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). 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).