Mesa weather in August

In August, Mesa sees average daytime highs of 102°F and overnight lows near 81°F, with 1.0 in of rain across 4 wet days and about 13.2 hours of daylight. It is the 2nd-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 102°F through the month. The sky is clear or mostly clear about 66% of the time in August, and the air most often feels dry.

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 Mesa's 7th-clearest and 11th-windiest month. For the whole year in context, see Mesa's year-round climate.

Daytime high
102°
2nd warmest
Overnight low
81°
11th coldest
Rainfall
1.0 in
4 wet days
Daylight
13 h 12 min
5:54 AM – 7:09 PM
Cloud cover
33%
7th clearest
Wind
4 mph
11th windiest
Solar energy
6.82 kWh/m²
Travel score
0.6
out of 10

Mesa is city in Maricopa County, Arizona, United States.

Density
1,329/km²
people per km²
Founded
1878

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 102°F through the month.

A typical August day in Mesa reaches about 102°F in the afternoon and slips back to 81°F overnight — a 21°F spread between the day's warmth and the night's chill. On most days the high lands between 95°F and 109°F. Set against its neighbours, August runs about 2°F cooler than July and about 5°F warmer than September.

70°80°90°100°110°151015202531
Avg high (°F)Avg low (°F)
110382
210382
310382
410382
510382
610382
710382
810382
910382
1010382
1110382
1210382
1310382
1410382
1510381
1610281
1710281
1810281
1910281
2010281
2110281
2210281
2310280
2410180
2510180
2610180
2710180
2810180
2910179
3010179
3110179

How August really feels in Mesa

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
19 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.

Mesa weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan65° / 42°1.63.9107.3
Feb69° / 45°1.74.510.87.4
Mar75° / 50°1.13.211.78.3
Apr83° / 56°0.41.412.87.4
May92° / 66°0.20.813.74.3
Jun102° / 75°0.10.414.20.9
Jul104° / 82°0.73.2140.1
Aug102° / 81°1.0413.20.6
Sep97° / 74°1.0312.22.4
Oct87° / 61°0.82.211.26.2
Nov74° / 49°0.82.410.38.5
Dec64° / 42°1.34.19.87.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 66% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 17% of August, with mostly cloudy or overcast conditions the remaining 16%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17624
27624
37723
47822
57822
68020
78020
88119
98317
108317
118416
128416
138515
148515
158614
168614
178614
188614
198614
208614
218614
228614
238614
248614
258515
268614
278614
288614
298614
308614
318614

Chance of precipitation in August

Any precipitation

Mesa gets around 1.0 in of rain over 4 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 13% and peaks near 14% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
113
213
314
414
514
614
714
813
913
1013
1113
1212
1312
1412
1512
1612
1712
1812
1912
2012
2112
2212
2312
2413
2513
2613
2713
2813
2913
3013
3114

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 15% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1362423144
2352423134
3352524134
4352524124
5352525114
6352625114
7352626104
835262693
934272693
1034272783
1134282783
1234282783
1333282783
1433292783
1532292783
1632292793
1731292793
18312926103
19312926113
20312925123
21312925123
22312924133
23312824143
24312823143
25322823153
26322723153
27332722153
28342622152
29352622152
30362522152
31372521152

Wind in August

Winds average 4 mph in August.

Across August, daily wind ranges from about 4 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
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
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 5:43 AM to 6:04 AM, and sunset from 7:24 PM to 6:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:437:24
213.65:447:23
313.65:457:22
413.65:457:21
513.65:467:20
613.55:477:19
713.55:477:18
813.55:487:17
913.55:497:16
1013.45:507:15
1113.45:507:14
1213.45:517:13
1313.35:527:12
1413.35:527:11
1513.35:537:10
1613.25:547:09
1713.25:557:08
1813.25:557:07
1913.25:567:05
2013.15:577:04
2113.15:577:03
2213.15:587:02
2313.05:597:01
2413.06:006:59
2513.06:006:58
2612.96:016:57
2712.96:026:55
2812.96:026:54
2912.86:036:53
3012.86:046:52
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 6.82 kWh/m².

For context, solar energy here swings from a low near 3.15 kWh/m² to a high of 8.46 kWh/m² in June across the year — August's 6.82 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.1Intense
47.0Intense
57.0Intense
67.0Intense
77.0Intense
87.0Intense
97.0Intense
107.0Intense
117.0Intense
126.9Intense
136.9Intense
146.9Intense
156.9Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.7Intense
216.7Intense
226.7Intense
236.7Intense
246.6Intense
256.6Intense
266.6Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
316.4Intense
Planning a trip in August

Is August a good time to visit Mesa?

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

0.6
Sightseeing
11th-best month of the year
3.6
Beach & pool
9th-best month of the year

August is a weaker month for outdoor sightseeing in Mesa.

What to pack for Mesa in August

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

In August, Mesa sees daytime highs around 102°F and nights near 81°F. Pack light clothes and sun protection. About 4 days see rain.

light clothessun protection

UV index in Mesa 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 Mesa peaks around July 14 at about 11 (extreme) — 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 highExtremeVery highHighModerateJul 14UV 11Dec 20UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar5Moderate
Apr7High
May9Very high
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Mesa 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 Mesa is worst in June — around 32 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (December, 11 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodJun 1730 µg/m³Dec 1211 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb12Good
Mar12Good
Apr12Good
May13Moderate
Jun32Moderate
Jul15Moderate
Aug13Moderate
Sep13Moderate
Oct13Moderate
Nov12Good
Dec11Good
Location & terrain

Where is Mesa?

Mesa sits at 33.4°N, 111.8°W, 1,240 ft above sea level, in United States. The nearest listed city is Tempe, 5.0 mi away.

Topography around Mesa

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

Within 2 miles, the terrain around Mesa has only modest variations in elevation — a maximum elevation change of 62 ft around an average of 1,243 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,125 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,270 ft.

The land around Mesa is covered by artificial surfaces (82%) within 2 miles, artificial surfaces (61%) within 10 miles, and shrubs (54%) within 50 miles.

2 miles
62 ft
10 miles
1,125 ft
50 miles
7,270 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Tempe 5.0 mi · Gilbert 5.0 mi · Tempe Junction 6.8 mi · Scottsdale 7.5 mi · Chandler 8.1 mi · Ahwatukee Foothills 11 mi · Central City 14 mi · Fountain Hills 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 Mesa (33.4223°, -111.8226°, elevation 1,240 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).