Tempe weather in August

In August, Tempe sees average daytime highs of 104°F and overnight lows near 83°F, with 1.2 in of rain across 4.4 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 104°F through the month. The sky is clear or mostly clear about 67% 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 Tempe's 7th-clearest and 11th-windiest month. For the whole year in context, see Tempe's year-round climate.

Daytime high
104°
2nd warmest
Overnight low
83°
11th coldest
Rainfall
1.2 in
4.4 wet days
Daylight
13 h 12 min
5:54 AM – 7:09 PM
Cloud cover
33%
7th clearest
Wind
5 mph
11th windiest
Solar energy
6.85 kWh/m²
Travel score
0.2
out of 10

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

Founded
1879

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 104°F through the month.

A typical August day in Tempe reaches about 104°F in the afternoon and slips back to 83°F overnight — a 21°F spread between the day's warmth and the night's chill. On most days the high lands between 96°F and 110°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)
110584
210584
310584
410584
510584
610584
710583
810483
910483
1010483
1110483
1210483
1310483
1410483
1510483
1610483
1710483
1810482
1910382
2010382
2110382
2210382
2310382
2410382
2510382
2610381
2710381
2810281
2910281
3010281
3110280

How August really feels in Tempe

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
30 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.

Tempe 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
Jan66° / 43°1.33.7107.4
Feb70° / 46°1.54.110.87.6
Mar77° / 51°1.02.811.78.3
Apr85° / 58°0.31.312.87.0
May94° / 67°0.20.613.73.8
Jun103° / 76°0.10.414.20.6
Jul105° / 83°0.73.6140.0
Aug104° / 83°1.24.413.20.2
Sep99° / 75°1.03.112.21.9
Oct88° / 63°0.82.211.25.8
Nov75° / 51°0.72.210.38.5
Dec65° / 43°1.13.69.87.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 67% 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 (%)
17723
27822
37822
47921
58020
68020
78218
88317
98317
108416
118416
128515
138515
148614
158614
168515
178515
188614
198614
208614
218614
228614
238614
248614
258515
268614
278614
288614
298614
308614
318713

Chance of precipitation in August

Any precipitation

Tempe gets around 1.2 in of rain over 4.4 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 14% and peaks near 15% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
113
213
313
414
514
614
714
814
914
1014
1114
1214
1314
1414
1514
1614
1714
1814
1914
2014
2114
2214
2314
2415
2515
2615
2715
2815
2915
3015
3115

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 18% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1372222145
2372222145
3372222135
4362223135
5362223136
6362324126
7362324126
8352324116
9352425116
10342425115
11342525115
12332525115
13332625115
14322625115
15312725116
16312725126
17302725126
18302725135
19292725135
20292625145
21292625145
22292625155
23302525155
24302524165
25312424165
26312324165
27322324164
28332324164
29342224164
30352223164
31362223164

Wind in August

Winds average 5 mph in August.

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 5:43 AM to 6:05 AM, and sunset from 7:24 PM to 6:51 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
413.65:467:21
513.65:467:20
613.55:477:20
713.55:487:19
813.55:497:18
913.55:497:17
1013.45:507:16
1113.45:517:15
1213.45:517:14
1313.35:527:13
1413.35:537:11
1513.35:547:10
1613.25:547:09
1713.25:557:08
1813.25:567:07
1913.25:567:06
2013.15:577:05
2113.15:587:03
2213.15:597:02
2313.05:597:01
2413.06:007:00
2513.06:016:58
2612.96:016:57
2712.96:026:56
2812.96:036:54
2912.86:036:53
3012.86:046:52
3112.86:056:51

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.85 kWh/m².

For context, solar energy here swings from a low near 3.16 kWh/m² to a high of 8.46 kWh/m² in June across the year — August's 6.85 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
17.2Intense
27.1Intense
37.1Intense
47.1Intense
57.1Intense
67.1Intense
77.0Intense
87.0Intense
97.0Intense
107.0Intense
117.0Intense
127.0Intense
137.0Intense
146.9Intense
156.9Intense
166.9Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.7Intense
226.7Intense
236.7Intense
246.7Intense
256.6Intense
266.6Intense
276.6Intense
286.5Intense
296.5Intense
306.5Intense
316.5Intense
Planning a trip in August

Is August a good time to visit Tempe?

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

0.2
Sightseeing
11th-best month of the year
3.0
Beach & pool
10th-best month of the year

August is a weaker month for outdoor sightseeing in Tempe.

What to pack for Tempe in August

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

In August, Tempe sees daytime highs around 104°F and nights near 83°F. Pack light clothes and sun protection. About 4 days see rain.

light clothessun protection

UV index in Tempe 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 Tempe 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 Tempe 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 Tempe 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 Tempe?

Tempe sits at 33.4°N, 111.9°W, 1,181 ft above sea level, in United States. The nearest listed city is Tempe Junction, 1.9 mi away.

Topography around Tempe

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

Within 2 miles, the terrain around Tempe has only modest variations in elevation — a maximum elevation change of 282 ft around an average of 1,184 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,555 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,923 ft.

The land around Tempe is covered by artificial surfaces (75%) within 2 miles, artificial surfaces (65%) within 10 miles, and shrubs (53%) within 50 miles.

2 miles
282 ft
10 miles
1,555 ft
50 miles
6,923 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Tempe Junction 1.9 mi · Mesa 5.0 mi · Scottsdale 6.8 mi · Ahwatukee Foothills 6.8 mi · Gilbert 8.1 mi · Chandler 8.7 mi · Central City 8.7 mi · Phoenix 9.9 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 Tempe (33.4148°, -111.9093°, elevation 1,181 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).