Agua Caliente weather in August

In August, Agua Caliente sees average daytime highs of 79°F and overnight lows near 56°F, with 0.0 in of rain across 0.2 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 79°F through the month. The sky is clear or mostly clear about 89% 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 Agua Caliente's 2nd-clearest and 7th-windiest month. For the whole year in context, see Agua Caliente's year-round climate.

Daytime high
79°
1st warmest
Overnight low
56°
12th coldest
Rainfall
0.0 in
0.2 wet days
Daylight
13 h 30 min
5:29 AM – 6:59 PM
Cloud cover
14%
2nd clearest
Wind
5 mph
7th windiest
Solar energy
7.14 kWh/m²
Travel score
9.1
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 79°F through the month.

A typical August day in Agua Caliente reaches about 79°F in the afternoon and slips back to 56°F overnight — a 23°F spread between the day's warmth and the night's chill. On most days the high lands between 72°F and 88°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)
17956
27956
37956
47956
57956
67956
77956
87956
97956
107956
117956
127956
137956
147956
157956
167956
177956
187956
197956
207956
217956
227956
237956
247956
257956
267956
278056
288056
298056
308056
318056

Agua Caliente weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan57° / 42°4.99.79.64.1
Feb60° / 44°5.18.910.54.8
Mar63° / 46°3.78.511.75.8
Apr66° / 48°1.65.1137.0
May71° / 52°0.83.2148.1
Jun77° / 55°0.2114.69.0
Jul79° / 56°0.00.114.49.2
Aug79° / 56°0.00.213.59.1
Sep78° / 55°0.10.512.39.1
Oct73° / 52°1.12.9118.5
Nov63° / 46°2.569.96.2
Dec57° / 42°4.89.99.44.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 89% 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 (%)
1946
2946
3946
4946
5946
6946
7946
8946
9955
10946
11946
12946
13946
14946
15946
16955
17955
18955
19955
20955
21955
22955
23955
24955
25955
26955
27955
28955
29955
30955
31955

Chance of precipitation in August

Any precipitation

Agua Caliente gets around 0.0 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
121
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 66% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
166331
266331
366331
466331
565341
665341
765341
865341
965341
1065341
1165341
1265341
1365341
1465341
1565341
1665341
1765341
1865341
1965341
2065341
2165341
2265341
2365341
2465341
2565341
2666331
2767321
2868311
2969301
3069292
3170282

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 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 5:16 AM to 5:43 AM, and sunset from 7:16 PM to 6:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.05:167:16
214.05:177:15
313.95:177:14
413.95:187:13
513.95:197:12
613.95:207:11
713.85:217:10
813.85:227:09
913.85:237:08
1013.75:247:07
1113.75:257:05
1213.65:257:04
1313.65:267:03
1413.65:277:02
1513.55:287:00
1613.55:296:59
1713.55:306:58
1813.45:316:56
1913.45:326:55
2013.35:336:54
2113.35:346:52
2213.35:356:51
2313.25:356:49
2413.25:366:48
2513.25:376:46
2613.15:386:45
2713.15:396:43
2813.05:406:42
2913.05:416:40
3013.05:426:39
3112.95:436:37

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 7.14 kWh/m².

For context, solar energy here swings from a low near 2.1 kWh/m² to a high of 7.99 kWh/m² in June across the year — August's 7.14 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
17.6Intense
27.5Intense
37.5Intense
47.5Intense
57.5Intense
67.5Intense
77.4Intense
87.4Intense
97.4Intense
107.3Intense
117.3Intense
127.3Intense
137.3Intense
147.2Intense
157.2Intense
167.2Intense
177.1Intense
187.1Intense
197.1Intense
207.0Intense
217.0Intense
227.0Intense
236.9Intense
246.9Intense
256.8Intense
266.8Intense
276.8Intense
286.7Intense
296.7Intense
306.7Intense
316.6Intense
Planning a trip in August

Hazard calendar for Agua Caliente

In seasonPeak

None of Agua Caliente's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Agua Caliente's rainy season runs November–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Agua Caliente?

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

9.1
Sightseeing
2nd-best month of the year
8.7
Beach & pool
1st-best month of the year

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

What to pack for Agua Caliente in August

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

In August, Agua Caliente sees daytime highs around 79°F and nights near 56°F. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

Sea temperature near Agua Caliente 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 32 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 Agua Caliente 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 Agua Caliente peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 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 highExtremeVery highHighModerateJun 23UV 10Dec 13UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr6High
May9Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep6High
Oct5High
Nov2Moderate
Dec2Low

Air quality in Agua Caliente 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 Agua Caliente 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 Agua Caliente?

Agua Caliente sits at 38.3°N, 122.5°W, 154 ft above sea level, in United States. The nearest listed city is Petaluma, 11 mi away.

Topography around Agua Caliente

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

Within 2 miles, the terrain around Agua Caliente has significant variations in elevation — a maximum elevation change of 1,181 ft around an average of 381 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,730 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,895 ft.

The land around Agua Caliente is covered by trees (62%) and grassland (24%) within 2 miles, trees (43%) and grassland (40%) within 10 miles, and trees (32%), grassland (27%) and water (25%) within 50 miles.

2 miles
1,181 ft
10 miles
2,730 ft
50 miles
4,895 ft
treesgrasslandcroplandartificial surfaceswaterwetland
August weather nearby: Petaluma 11 mi · Napa 11 mi · Rohnert Park 12 mi · Santa Rosa 15 mi · Novato 16 mi · American Canyon 16 mi · Vallejo 20 mi · Windsor 24 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 Agua Caliente (38.3241°, -122.488°, elevation 154 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).