Twentynine Palms weather in August

In August, Twentynine Palms sees average daytime highs of 100°F and overnight lows near 76°F, with 0.4 in of rain across 2.4 wet days and about 13.3 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 100°F through the month. The sky is clear or mostly clear about 83% 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 Twentynine Palms's 4th-clearest and 11th-windiest month. For the whole year in context, see Twentynine Palms's year-round climate.

Daytime high
100°
2nd warmest
Overnight low
76°
11th coldest
Rainfall
0.4 in
2.4 wet days
Daylight
13 h 18 min
5:10 AM – 6:27 PM
Cloud cover
20%
4th clearest
Wind
5 mph
11th windiest
Solar energy
7.34 kWh/m²
Travel score
1.6
out of 10

Twentynine Palms is city in San Bernardino County, California, United States.

Density
170/km²
people per km²
Founded
1920

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 100°F through the month.

A typical August day in Twentynine Palms reaches about 100°F in the afternoon and slips back to 76°F overnight — a 23°F spread between the day's warmth and the night's chill. On most days the high lands between 94°F and 105°F. Set against its neighbours, August runs on par with July and about 7°F warmer than September.

70°80°90°100°110°151015202531
Avg high (°F)Avg low (°F)
110077
210077
310077
410077
510077
610077
710077
810077
910077
1010077
1110076
1210076
1310076
1410076
1510076
1610076
1710076
1810076
1910076
209976
219976
229976
239976
249976
259975
269975
279875
289875
299875
309875
319874

How August really feels in Twentynine Palms

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
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.

Twentynine Palms weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan61° / 43°0.62.6106.2
Feb64° / 45°0.8310.77.2
Mar71° / 49°0.42.111.78.3
Apr78° / 54°0.21.212.88.7
May87° / 62°0.10.613.86.4
Jun96° / 70°0.00.214.23.0
Jul101° / 77°0.32.4141.2
Aug100° / 76°0.42.413.31.6
Sep93° / 69°0.21.512.24.1
Oct81° / 59°0.30.911.18.2
Nov68° / 48°0.20.910.28.2
Dec59° / 42°0.62.29.85.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 83% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 9% of August, with mostly cloudy or overcast conditions the remaining 9%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18713
28713
38713
48812
58911
68911
78911
8919
9919
10919
11928
12928
13928
14928
15937
16937
17937
18937
19946
20946
21937
22937
23937
24937
25937
26937
27928
28928
29928
30928
31928

Chance of precipitation in August

Any precipitation

Twentynine Palms gets around 0.4 in of rain over 2.4 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 8% and peaks near 9% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
19
29
39
48
58
68
78
88
97
107
117
127
137
147
157
168
178
188
198
208
218
228
238
248
258
268
278
288
298
308
318

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 80% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1751294
2761293
3761293
4771283
5771283
6781273
7781273
8791272
9801262
10801262
11801262
12801262
13801262
14821161
15821161
16821161
17821161
18811162
19811162
20811162
21811072
22811072
23811072
24821062
25821062
26821062
27821062
28811162
29811162
30811162
31801262

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 4:59 AM to 5:21 AM, and sunset from 6:42 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.74:596:42
213.74:596:41
313.75:006:40
413.65:016:39
513.65:026:38
613.65:026:37
713.65:036:36
813.55:046:35
913.55:056:34
1013.55:056:33
1113.45:066:32
1213.45:076:31
1313.45:086:30
1413.35:086:29
1513.35:096:28
1613.35:106:27
1713.35:116:26
1813.25:116:24
1913.25:126:23
2013.25:136:22
2113.15:136:21
2213.15:146:20
2313.15:156:18
2413.05:166:17
2513.05:166:16
2613.05:176:14
2712.95:186:13
2812.95:196:12
2912.95:196:10
3012.85:206:09
3112.85:216:08

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 7.34 kWh/m².

For context, solar energy here swings from a low near 3.18 kWh/m² to a high of 8.64 kWh/m² in June across the year — August's 7.34 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
17.6Intense
27.6Intense
37.6Intense
47.6Intense
57.6Intense
67.6Intense
77.5Intense
87.5Intense
97.5Intense
107.5Intense
117.5Intense
127.5Intense
137.4Intense
147.4Intense
157.4Intense
167.4Intense
177.3Intense
187.3Intense
197.3Intense
207.2Intense
217.2Intense
227.2Intense
237.1Intense
247.1Intense
257.1Intense
267.0Intense
277.0Intense
287.0Intense
296.9Intense
306.9Intense
316.9Intense
Planning a trip in August

Is August a good time to visit Twentynine Palms?

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

1.6
Sightseeing
11th-best month of the year
5.0
Beach & pool
7th-best month of the year

August is a weaker month for outdoor sightseeing in Twentynine Palms.

What to pack for Twentynine Palms in August

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

In August, Twentynine Palms sees daytime highs around 100°F and nights near 76°F. Pack light clothes and sun protection.

light clothessun protection

UV index in Twentynine Palms 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 Twentynine Palms peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 highHighModerateJun 23UV 11Dec 17UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar5Moderate
Apr8Very high
May9Very high
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Twentynine Palms 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 Twentynine Palms is worst in September — around 20 µg/m³ PM2.5 (moderate), about 4.6× the cleanest month (December, 4 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodSep 1418 µg/m³Dec 154 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb7Good
Mar8Good
Apr8Good
May8Good
Jun14Moderate
Jul10Good
Aug11Good
Sep20Moderate
Oct6Good
Nov5Good
Dec4Good
Location & terrain

Where is Twentynine Palms?

Twentynine Palms sits at 34.1°N, 116.1°W, 1,988 ft above sea level, in United States. The nearest listed city is Yucca Valley, 22 mi away.

Topography around Twentynine Palms

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

Within 2 miles, the terrain around Twentynine Palms has significant variations in elevation — a maximum elevation change of 1,588 ft around an average of 2,073 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 4,209 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 11,650 ft.

The land around Twentynine Palms is covered by bare terrain (75%) and artificial surfaces (21%) within 2 miles, bare terrain (79%) within 10 miles, and bare terrain (73%) within 50 miles.

2 miles
1,588 ft
10 miles
4,209 ft
50 miles
11,650 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Yucca Valley 22 mi · Desert Hot Springs 29 mi · Indio 30 mi · Coachella 32 mi · Palm Desert 34 mi · Cathedral City 34 mi · Rancho Mirage 34 mi · Palm Springs 35 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 Twentynine Palms (34.1356°, -116.0542°, elevation 1,988 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).