Pittsburg weather in August

In August, Pittsburg sees average daytime highs of 82°F and overnight lows near 57°F, with 0.1 in of rain across 0.2 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 82°F through the month. The sky is clear or mostly clear about 90% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 hours at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Pittsburg's 2nd-clearest and 4th-windiest month. For the whole year in context, see Pittsburg's year-round climate.

Daytime high
82°
1st warmest
Overnight low
57°
12th coldest
Rainfall
0.1 in
0.2 wet days
Daylight
13 h 30 min
5:27 AM – 6:56 PM
Cloud cover
11%
2nd clearest
Wind
8 mph
4th windiest
Solar energy
7.26 kWh/m²
Travel score
8.7
out of 10

Pittsburg is city in Contra Costa County, California, United States.

Density
1,400/km²
people per km²
Founded
1839

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 82°F through the month.

A typical August day in Pittsburg reaches about 82°F in the afternoon and slips back to 57°F overnight — a 25°F spread between the day's warmth and the night's chill. On most days the high lands between 75°F and 91°F. Set against its neighbours, August runs on par with July and on par with September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18257
28257
38257
48257
58257
68257
78257
88257
98257
108257
118257
128257
138257
148257
158257
168257
178257
188257
198257
208257
218257
228257
238257
248257
258257
268257
278257
288257
298357
308357
318357

Pittsburg weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan57° / 42°3.78.99.74.2
Feb61° / 44°3.78.710.55.1
Mar65° / 47°2.88.311.76.3
Apr69° / 49°1.34.7137.4
May74° / 52°0.72.9148.5
Jun80° / 55°0.10.814.68.8
Jul82° / 57°0.00.214.48.8
Aug82° / 57°0.10.213.58.7
Sep81° / 56°0.10.412.38.7
Oct75° / 53°0.82.8118.6
Nov65° / 47°1.75.49.96.5
Dec57° / 43°3.38.69.44.3

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 90% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 5% of August, with mostly cloudy or overcast conditions the remaining 5%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1955
2955
3955
4955
5946
6946
7946
8946
9946
10946
11946
12946
13946
14946
15946
16946
17946
18946
19955
20955
21955
22955
23955
24955
25955
26964
27964
28964
29964
30964
31964

Chance of precipitation in August

Any precipitation

Pittsburg gets around 0.1 in of rain over 0.2 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 1% and peaks near 1% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
10
20
30
40
50
60
70
80
90
100
110
120
131
141
151
161
171
181
191
201
211
221
231
241
251
261
271
281
291
301
311

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 51% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
154442
253452
353452
453452
552462
652462
751472
851472
950482
1050482
1150482
1250492
1349492
1449492
1549492
1649492
1749492
1849492
1949492
2049482
2149483
2249483
2349483
2449483
2550473
2650473
2751463
2851454
2952444
3053434
3155414

Wind in August

Winds average 8 mph in August.

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.

051015151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
267light breeze
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 hours 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 66 minutes over August. Sunrise moves from 5:14 AM to 5:40 AM, and sunset from 7:13 PM to 6:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.05:147:13
214.05:157:12
313.95:167:11
413.95:167:10
513.95:177:09
613.85:187:08
713.85:197:07
813.85:207:06
913.75:217:05
1013.75:227:04
1113.75:237:02
1213.65:247:01
1313.65:247:00
1413.65:256:59
1513.55:266:57
1613.55:276:56
1713.45:286:55
1813.45:296:53
1913.45:306:52
2013.35:316:51
2113.35:326:49
2213.35:326:48
2313.25:336:47
2413.25:346:45
2513.15:356:44
2613.15:366:42
2713.15:376:41
2813.05:386:39
2913.05:396:38
3012.95:406:36
3112.95:406:35

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 7.26 kWh/m².

For context, solar energy here swings from a low near 2.14 kWh/m² to a high of 8.05 kWh/m² in June across the year — August's 7.26 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.7Intense
27.7Intense
37.7Intense
47.6Intense
57.6Intense
67.6Intense
77.5Intense
87.5Intense
97.5Intense
107.5Intense
117.4Intense
127.4Intense
137.4Intense
147.3Intense
157.3Intense
167.3Intense
177.2Intense
187.2Intense
197.2Intense
207.1Intense
217.1Intense
227.1Intense
237.0Intense
247.0Intense
257.0Intense
266.9Intense
276.9Intense
286.8Intense
296.8Intense
306.8Intense
316.7Intense
Planning a trip in August

Is August a good time to visit Pittsburg?

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

8.7
Sightseeing
3rd-best month of the year
9.2
Beach & pool
1st-best month of the year

August is one of the better times to visit Pittsburg for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Pittsburg in August

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

In August, Pittsburg sees daytime highs around 82°F and nights near 57°F. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Pittsburg in August

The nearest coast averages about 58°F in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 42 mi away) is warmest in September at about 58°F and coldest in April near 53°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

52°54°56°58°60°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°F)Comfort
Jan53Bracing
Feb53Bracing
Mar54Bracing
Apr53Bracing
May53Bracing
Jun54Bracing
Jul56Bracing
Aug58Bracing
Sep58Bracing
Oct57Bracing
Nov55Bracing
Dec54Bracing

UV index in Pittsburg in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Pittsburg peaks around June 23 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 23UV 10Dec 15UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr6High
May8Very high
Jun10Very high
Jul10Very high
Aug10Very high
Sep6High
Oct5High
Nov2Moderate
Dec2Low

Air quality in Pittsburg 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 Pittsburg is worst in September — around 29 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (June, 7 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateSep 1829 µg/m³Jun 127 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar13Moderate
Apr10Good
May8Good
Jun7Good
Jul10Good
Aug25Moderate
Sep29Moderate
Oct27Moderate
Nov16Moderate
Dec12Good
Location & terrain

Where is Pittsburg?

Pittsburg sits at 38.0°N, 121.9°W, 26 ft above sea level, in United States. The nearest listed city is Bay Point, 4.3 mi away.

Topography around Pittsburg

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

Within 2 miles, the terrain around Pittsburg has only modest variations in elevation — a maximum elevation change of 233 ft around an average of 36 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,586 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,452 ft.

The land around Pittsburg is covered by artificial surfaces (45%) and water (23%) within 2 miles, grassland (40%) within 10 miles, and grassland (32%) and trees (23%) within 50 miles.

2 miles
233 ft
10 miles
3,586 ft
50 miles
4,452 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Bay Point 4.3 mi · Antioch 4.3 mi · Concord 8.7 mi · Oakley 9.3 mi · Pleasant Hill 11 mi · Brentwood 12 mi · Walnut Creek 13 mi · Martinez 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 Pittsburg (38.028°, -121.8847°, elevation 26 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).