Hollister weather in August

In August, Hollister sees average daytime highs of 77°F and overnight lows near 56°F, with 0.1 in of rain across 0.3 wet days and about 13.4 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 77°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 13 h 54 min at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Hollister's 1st-clearest and 9th-windiest month. For the whole year in context, see Hollister's year-round climate.

Daytime high
77°
1st warmest
Overnight low
56°
12th coldest
Rainfall
0.1 in
0.3 wet days
Daylight
13 h 24 min
5:27 AM – 6:52 PM
Cloud cover
13%
1st clearest
Wind
4 mph
9th windiest
Solar energy
7.21 kWh/m²
Travel score
9.3
out of 10

Hollister is city in and county seat of San Benito County, California, United States.

Density
1,984/km²
people per km²
Founded
1868

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 77°F through the month.

A typical August day in Hollister reaches about 77°F in the afternoon and slips back to 56°F overnight — a 21°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 85°F. Set against its neighbours, August runs on par with July and on par with September.

50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
17756
27756
37756
47756
57756
67756
77756
87756
97756
107756
117756
127756
137756
147756
157756
167756
177756
187756
197756
207756
217756
227756
237756
247756
257756
267756
277856
287856
297856
307856
317856

Hollister 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
Jan58° / 41°3.48.19.84.6
Feb60° / 42°3.48.710.64.9
Mar62° / 44°2.78.411.75.7
Apr65° / 46°1.2512.96.8
May68° / 49°0.62.813.97.9
Jun73° / 52°0.10.414.59.1
Jul77° / 56°0.00.214.39.4
Aug77° / 56°0.10.313.49.3
Sep76° / 54°0.10.512.39.4
Oct72° / 50°0.72.2118.6
Nov64° / 44°1.54.7106.6
Dec58° / 40°3.07.89.54.6

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 90% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 4% of August, with mostly cloudy or overcast conditions the remaining 6%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1937
2946
3946
4946
5946
6946
7946
8937
9937
10937
11937
12937
13937
14946
15946
16946
17955
18955
19955
20955
21955
22955
23955
24955
25964
26964
27964
28964
29964
30955
31955

Chance of precipitation in August

Any precipitation

Hollister gets around 0.1 in of rain over 0.3 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 (%)
11
21
31
41
51
61
71
81
91
101
111
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 58% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
162362
262362
362362
462362
561372
661372
761372
860382
960382
1060382
1159392
1259392
1359392
1459392
1558402
1658402
1757403
1857403
1957403
2056413
2156413
2256413
2356413
2455414
2555414
2655414
2755414
2856404
2957394
3057385
3159365

Wind in August

Winds average 4 mph in August.

Across August, daily wind ranges from about 3 mph on the calmest days to 4 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm
313calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 54 min 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 60 minutes over August. Sunrise moves from 5:15 AM to 5:40 AM, and sunset from 7:09 PM to 6:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.95:157:09
213.95:157:08
313.85:167:07
413.85:177:06
513.85:187:05
613.85:197:04
713.75:197:03
813.75:207:02
913.75:217:01
1013.65:227:00
1113.65:236:58
1213.65:246:57
1313.55:256:56
1413.55:256:55
1513.55:266:54
1613.45:276:52
1713.45:286:51
1813.45:296:50
1913.35:306:48
2013.35:306:47
2113.25:316:46
2213.25:326:44
2313.25:336:43
2413.15:346:42
2513.15:356:40
2613.15:366:39
2713.05:366:37
2813.05:376:36
2912.95:386:35
3012.95:396:33
3112.95:406:32

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 7.21 kWh/m².

For context, solar energy here swings from a low near 2.47 kWh/m² to a high of 8 kWh/m² in June across the year — August's 7.21 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
17.6Intense
27.6Intense
37.6Intense
47.5Intense
57.5Intense
67.5Intense
77.5Intense
87.4Intense
97.4Intense
107.4Intense
117.4Intense
127.3Intense
137.3Intense
147.3Intense
157.3Intense
167.2Intense
177.2Intense
187.2Intense
197.1Intense
207.1Intense
217.1Intense
227.0Intense
237.0Intense
247.0Intense
256.9Intense
266.9Intense
276.9Intense
286.8Intense
296.8Intense
306.8Intense
316.7Intense
Planning a trip in August

Is August a good time to visit Hollister?

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

9.3
Sightseeing
3rd-best month of the year
8.4
Beach & pool
1st-best month of the year

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

What to pack for Hollister in August

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

In August, Hollister sees daytime highs around 77°F and nights near 56°F. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

Sea temperature near Hollister 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 26 mi away) is warmest in September at about 58°F and coldest in April near 54°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
Jan55Bracing
Feb55Bracing
Mar55Bracing
Apr54Bracing
May54Bracing
Jun55Bracing
Jul57Bracing
Aug58Bracing
Sep58Bracing
Oct58Bracing
Nov56Bracing
Dec55Bracing

UV index in Hollister 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 Hollister peaks around June 22 at about 11 (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 22UV 11Dec 13UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun11Extreme
Jul10Extreme
Aug10Very high
Sep7High
Oct5High
Nov2Moderate
Dec2Moderate

Air quality in Hollister 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 Hollister is worst in August — around 22 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (June, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1920 µg/m³Jun 135 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar8Good
Apr7Good
May6Good
Jun5Good
Jul8Good
Aug22Moderate
Sep15Moderate
Oct12Moderate
Nov8Good
Dec7Good
Location & terrain

Where is Hollister?

Hollister sits at 36.9°N, 121.4°W, 289 ft above sea level, in United States. The nearest listed city is Gilroy, 14 mi away.

Topography around Hollister

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

Within 2 miles, the terrain around Hollister has only modest variations in elevation — a maximum elevation change of 285 ft around an average of 292 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,409 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,843 ft.

The land around Hollister is covered by artificial surfaces (42%) and cropland (34%) within 2 miles, grassland (55%) and cropland (20%) within 10 miles, and grassland (42%) and trees (26%) within 50 miles.

2 miles
285 ft
10 miles
3,409 ft
50 miles
5,843 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Gilroy 14 mi · Prunedale 16 mi · Salinas 19 mi · Watsonville 20 mi · Morgan Hill 24 mi · Marina 25 mi · Soledad 30 mi · Seaside 30 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 Hollister (36.8524°, -121.4016°, elevation 289 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).