Manhattan weather in August

In August, Manhattan sees average daytime highs of 87°F and overnight lows near 67°F, with 3.7 in of rain across 9.2 wet days and about 13.5 hours of daylight. It is the 2nd-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 87°F through the month. The sky is clear or mostly clear about 48% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 06 min at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Manhattan's 4th-clearest and 12th-windiest month. For the whole year in context, see Manhattan's year-round climate.

Daytime high
87°
2nd warmest
Overnight low
67°
11th coldest
Rainfall
3.7 in
9.2 wet days
Daylight
13 h 30 min
5:44 AM – 7:17 PM
Cloud cover
44%
4th clearest
Wind
7 mph
12th windiest
Solar energy
5.94 kWh/m²
Travel score
4.9
out of 10

Manhattan is city in Riley and Pottawatomie counties in Kansas, United States, county seat of Riley County.

Density
1,124/km²
people per km²
Founded
1855

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 87°F through the month.

A typical August day in Manhattan reaches about 87°F in the afternoon and slips back to 67°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 78°F and 97°F. Set against its neighbours, August runs about 2°F cooler than July and about 8°F warmer than September.

60°80°100°151015202531
Avg high (°F)Avg low (°F)
18969
28969
38969
48869
58869
68869
78869
88868
98868
108868
118868
128868
138868
148767
158767
168767
178767
188767
198767
208767
218767
228767
238767
248766
258766
268766
278766
288666
298665
308665
318565

How August really feels in Manhattan

Once humidity and wind are folded in, August averages 9 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
9
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.

Manhattan weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan39° / 21°0.94.52.89.60.0
Feb44° / 24°1.45.32.810.50.8
Mar55° / 34°2.48.11.711.73.8
Apr66° / 44°3.69.80.5136.0
May75° / 55°5.212014.16.5
Jun85° / 66°4.110.2014.75.3
Jul90° / 70°3.79.5014.54.2
Aug87° / 67°3.79.2013.54.9
Sep80° / 59°3.17.3012.37.0
Oct68° / 46°2.57.30.2116.9
Nov54° / 34°1.85.319.93.7
Dec42° / 24°1.44.72.19.30.5

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% 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 33%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36436
46436
56535
66535
76535
86535
96634
106634
116634
126733
136733
146832
156733
166832
176832
186832
196931
206832
216832
226931
236931
246931
256931
266931
276931
286931
297030
307030
317030

Chance of precipitation in August

Any precipitation

Manhattan gets around 3.7 in of rain over 9.2 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 29% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
131
231
331
431
531
630
730
830
930
1030
1129
1229
1329
1429
1529
1629
1729
1829
1929
2029
2129
2229
2329
2428
2528
2628
2727
2827
2926
3026
3126

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 38% of days. Sticky, muggy-or-worse air turns up on roughly 53% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1313263622
2312273721
3312273721
4312273720
5312283720
6412283720
7412283719
8412283718
9512293618
10512293617
11512293617
12613293616
13613293616
14613293615
15713293615
16713293714
17713293713
18714293813
19714283912
20614284012
21614284111
22613274211
23614274211
24614284210
25614284210
2671428429
2771428429
2881528418
2991529408
30101529397
31111629377

Wind in August

Winds average 7 mph in August, the calmest month.

Across August, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237light breeze
247light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 06 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 72 minutes over August. Sunrise moves from 5:30 AM to 5:58 AM, and sunset from 7:35 PM to 6:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:307:35
214.05:317:34
314.05:327:33
414.05:337:31
513.95:347:30
613.95:357:29
713.95:367:28
813.85:367:27
913.85:377:26
1013.85:387:25
1113.75:397:23
1213.75:407:22
1313.75:417:21
1413.65:427:19
1513.65:437:18
1613.55:447:17
1713.55:457:15
1813.55:467:14
1913.45:477:13
2013.45:487:11
2113.45:497:10
2213.35:507:08
2313.35:517:07
2413.25:527:05
2513.25:527:04
2613.15:537:02
2713.15:547:01
2813.15:556:59
2913.05:566:58
3013.05:576:56
3112.95:586:55

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.94 kWh/m².

For context, solar energy here swings from a low near 2.15 kWh/m² to a high of 6.7 kWh/m² in July across the year — August's 5.94 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.1Intense
86.1Intense
96.1Intense
106.1Intense
116.0Intense
126.0Intense
136.0Intense
146.0Intense
156.0Bright
166.0Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.6Bright
305.6Bright
315.5Bright
Planning a trip in August

Is August a good time to visit Manhattan?

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

4.9
Sightseeing
6th-best month of the year
7.1
Beach & pool
1st-best month of the year

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

What to pack for Manhattan in August

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

In August, Manhattan sees daytime highs around 87°F and nights near 67°F. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Manhattan 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 Manhattan peaks around June 22 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 22UV 10Dec 20UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5Moderate
Apr7High
May7Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep7High
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Manhattan 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 Manhattan is worst in April — around 32 µg/m³ PM2.5 (moderate), about 5.1× the cleanest month (October, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodApr 1530 µg/m³Oct 236 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar16Moderate
Apr32Moderate
May11Good
Jun11Good
Jul14Moderate
Aug13Moderate
Sep11Good
Oct6Good
Nov7Good
Dec8Good
Location & terrain

Where is Manhattan?

Manhattan sits at 39.2°N, 96.6°W, 1,020 ft above sea level, in United States. The nearest listed city is Junction City, 17 mi away.

Topography around Manhattan

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

Within 2 miles, the terrain around Manhattan has only modest variations in elevation — a maximum elevation change of 266 ft around an average of 1,053 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 512 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 751 ft.

The land around Manhattan is covered by trees (35%) and artificial surfaces (33%) within 2 miles, grassland (54%) and trees (23%) within 10 miles, and grassland (54%) and cropland (34%) within 50 miles.

2 miles
266 ft
10 miles
512 ft
50 miles
751 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Junction City 17 mi · Topeka 49 mi · Emporia 58 mi · Salina 61 mi · Lawrence 73 mi · Leavenworth 89 mi · Newton 89 mi · Gardner 92 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 Manhattan (39.1836°, -96.5717°, elevation 1,020 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).