Shizukuishi weather in August

In August, Shizukuishi sees average daytime highs of 25°C and overnight lows near 19°C, with 164 mm of rain across 16 wet days and about 13.6 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 24°C by the end. The sky is clear or mostly clear about 14% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 06 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Shizukuishi's 10th-clearest and 12th-windiest month. For the whole year in context, see Shizukuishi's year-round climate.

Daytime high
25°
1st warmest
Overnight low
19°
12th coldest
Rainfall
164 mm
16 wet days
Daylight
13 h 36 min
4:53 AM – 6:27 PM
Cloud cover
74%
10th clearest
Wind
6 km/h
12th windiest
Solar energy
4.18 kWh/m²
Travel score
5.7
out of 10

Shizukuishi is town in Iwate district, Iwate prefecture, Japan.

Density
27/km²
people per km²
Founded
1955

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 26°C in the first days to 24°C by the end.

A typical August day in Shizukuishi reaches about 25°C in the afternoon and slips back to 19°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 29°C. Set against its neighbours, August runs about 1°C warmer than July and about 4°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12619
22619
32619
42619
52619
62619
72619
82619
92619
102619
112619
122619
132619
142519
152519
162519
172519
182519
192518
202518
212518
222518
232518
242518
252518
262418
272418
282418
292417
302417
312417

How August really feels in Shizukuishi

Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Shizukuishi weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -8°8314.518.39.50.0
Feb / -8°7713.515.210.40.0
Mar / -4°11316.11411.70.1
Apr11° / 108154.5132.2
May17° / 11413.90.214.24.8
Jun20° / 13°12113.4014.85.5
Jul24° / 17°18117.3014.55.5
Aug25° / 19°16416013.65.7
Sep21° / 14°16114.5012.35.5
Oct15° / 13513.40.210.94.2
Nov / 10815.159.81.3
Dec / -6°10516169.20.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 12% of August, with mostly cloudy or overcast conditions the remaining 73%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22773
32773
42872
52773
62773
72773
82773
92674
102674
112674
122575
132575
142674
152575
162575
172674
182773
192773
202773
212773
222872
232872
242872
252872
262773
272773
282674
292674
302674
312674

Chance of precipitation in August

Any precipitation

Shizukuishi gets around 164 mm of rain over 16 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 51% and peaks near 54% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
147
247
347
447
548
648
749
849
950
1050
1151
1252
1352
1453
1553
1654
1754
1854
1953
2053
2153
2253
2353
2453
2553
2653
2753
2853
2953
3053
3153

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the muggy band about 46% of days. Sticky, muggy-or-worse air turns up on roughly 60% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
118205615
218195715
318195616
419185616
519185616
619195516
719195417
819195417
9110205217
10110205217
11110215117
12110225017
13110234917
14110244817
15210244717
16210254616
17211264516
18311264516
19311274415
20312274314
21412284214
22413284113
23514294112
24514294011
25515304010
2661631399
2761631389
2861732378
2961833367
3071933357
3171934336

Wind in August

Winds average 6 km/h in August, the calmest month.

Across August, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 06 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over August. Sunrise moves from 4:39 AM to 5:07 AM, and sunset from 6:46 PM to 6:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.14:396:46
214.14:406:45
314.04:416:43
414.04:416:42
514.04:426:41
613.94:436:40
713.94:446:39
813.94:456:38
913.84:466:37
1013.84:476:35
1113.84:486:34
1213.74:496:33
1313.74:506:31
1413.74:516:30
1513.64:526:29
1613.64:536:27
1713.54:546:26
1813.54:556:25
1913.54:566:23
2013.44:576:22
2113.44:586:20
2213.34:596:19
2313.35:006:17
2413.35:016:16
2513.25:026:14
2613.25:036:13
2713.15:046:11
2813.15:046:10
2913.05:056:08
3013.05:066:06
3113.05:076:05

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.18 kWh/m².

For context, solar energy here swings from a low near 1.81 kWh/m² to a high of 5.13 kWh/m² in May across the year — August's 4.18 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.3Bright
144.2Bright
154.2Bright
164.2Bright
174.1Bright
184.1Bright
194.1Bright
204.0Bright
214.0Bright
224.0Bright
234.0Moderate
244.0Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.9Moderate
293.8Moderate
303.8Moderate
313.8Moderate
Planning a trip in August

Is August a good time to visit Shizukuishi?

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

5.7
Sightseeing
1st-best month of the year
5.2
Beach & pool
1st-best month of the year

August is a reasonable time to visit Shizukuishi for sightseeing.

What to pack for Shizukuishi in August

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

In August, Shizukuishi sees daytime highs around 25°C and nights near 19°C. Pack rain gear. Worth having: light clothes. About 16 days see rain.

rain gearlight clothes

UV index in Shizukuishi 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 Shizukuishi peaks around August 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighVery highHighModerateLowAug 18UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul6High
Aug9Very high
Sep7High
Oct5Moderate
Nov2Moderate
Dec2Low

Air quality in Shizukuishi 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 Shizukuishi is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1420 µg/m³Dec 1610 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar19Moderate
Apr20Moderate
May19Moderate
Jun14Moderate
Jul12Moderate
Aug11Good
Sep11Good
Oct12Good
Nov11Good
Dec9Good
Location & terrain

Where is Shizukuishi?

Shizukuishi sits at 39.7°N, 141.0°E, 192 m above sea level, in Japan. The nearest listed city is Morioka, 14 km away.

Topography around Shizukuishi

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Shizukuishi.

Within 3 km, the terrain around Shizukuishi has only modest variations in elevation — a maximum elevation change of 167 m around an average of 207 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,544 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,986 m.

The land around Shizukuishi is covered by cropland (39%) and trees (37%) within 3 km, trees (75%) within 16 km, and trees (87%) within 80 km.

3 km
167 m
16 km
1,544 m
80 km
1,986 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Morioka 14 km · Yahaba 17 km · Takizawa 18 km · Semboku 20 km · Hizume 22 km · Hachimantai 26 km · Hanamaki 36 km · Kitakami 47 km

Japan travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
100 V · 50 / 60 Hz
Prices
≈ 65% of US
price level, 2025
GDP per capita
$35,951
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.2
per 100k, 2023
Road deaths
3.6
per 100k/yr, 2019
Income group
High
World Bank
English
Very low
EF EPI 446
Religion
Shintoism 49%Buddhism 46%other 4%Christianity 1%

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 Shizukuishi (39.6941°, 140.9844°, elevation 192 m), 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).