Ichinoseki weather in August

In August, Ichinoseki sees average daytime highs of 27°C and overnight lows near 21°C, with 142 mm of rain across 14.8 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 15% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 14 h 06 min at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Ichinoseki's 10th-clearest and 11th-windiest month. For the whole year in context, see Ichinoseki's year-round climate.

Daytime high
27°
1st warmest
Overnight low
21°
12th coldest
Rainfall
142 mm
14.8 wet days
Daylight
13 h 30 min
4:54 AM – 6:26 PM
Cloud cover
73%
10th clearest
Wind
7 km/h
11th windiest
Solar energy
4.37 kWh/m²
Travel score
5.5
out of 10

Ichinoseki is city in Iwate Prefecture, Japan.

Density
91/km²
people per km²
Founded
1948

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 27°C through the month.

A typical August day in Ichinoseki reaches about 27°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 32°C. Set against its neighbours, August runs about 2°C warmer than July and about 4°C warmer than September.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12821
22821
32821
42821
52821
62821
72821
82821
92821
102821
112821
122821
132821
142821
152821
162721
172721
182721
192721
202720
212720
222720
232720
242720
252720
262720
272720
282720
292620
302620
312619

How August really feels in Ichinoseki

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.

Ichinoseki weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°508.77.89.60.0
Feb / -3°468.26.610.50.1
Mar / -0°8711.75.411.71.5
Apr14° / 9211.61134.1
May19° / 10°10411.6014.15.8
Jun22° / 15°11512.1014.76.0
Jul26° / 19°15615.9014.45.5
Aug27° / 21°14214.8013.55.5
Sep24° / 17°14912.9012.36.0
Oct18° / 10°12210.30115.7
Nov12° / 649.40.99.93.2
Dec / -1°5810.15.49.30.5

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 14% of August, with mostly cloudy or overcast conditions the remaining 72%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22773
32773
42773
52773
62773
72872
82872
92872
102872
112872
122872
132872
142872
152872
162971
172971
182971
192971
202971
213070
223070
232971
242971
252971
262971
272971
282971
292971
303070
313070

Chance of precipitation in August

Any precipitation

Ichinoseki gets around 142 mm of rain over 14.8 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 47% and peaks near 49% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
145
245
345
445
545
645
745
845
946
1046
1147
1248
1348
1449
1549
1649
1749
1849
1949
2049
2149
2249
2349
2449
2549
2648
2748
2848
2948
3047
3147

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 75% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1051431491
2051431501
3051330511
4051330511
5051330511
6051330511
7051331501
8051331491
9051332481
10051333471
11051433461
12151434461
13151434452
14151434442
15151535432
16151535422
17151535412
18161635402
19261635392
20271735382
21271835372
22281835362
23281934352
24292034342
25192134332
26192234322
271102334312
281102434302
291112533281
301112633271
311122733261

Wind in August

Winds average 7 km/h in August.

Across August, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 06 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 72 minutes over August. Sunrise moves from 4:40 AM to 5:08 AM, and sunset from 6:43 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.14:406:43
214.04:416:42
314.04:426:41
414.04:436:40
513.94:436:39
613.94:446:38
713.94:456:37
813.84:466:36
913.84:476:34
1013.84:486:33
1113.74:496:32
1213.74:506:31
1313.64:516:29
1413.64:526:28
1513.64:536:27
1613.54:546:26
1713.54:556:24
1813.54:556:23
1913.44:566:21
2013.44:576:20
2113.34:586:19
2213.34:596:17
2313.35:006:16
2413.25:016:14
2513.25:026:13
2613.15:036:11
2713.15:046:10
2813.15:056:08
2913.05:066:07
3013.05:076:05
3112.95:086:03

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.37 kWh/m².

For context, solar energy here swings from a low near 2.01 kWh/m² to a high of 5.35 kWh/m² in May across the year — August's 4.37 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.6Bright
94.6Bright
104.6Bright
114.5Bright
124.5Bright
134.5Bright
144.4Bright
154.4Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.1Bright
254.1Bright
264.1Bright
274.0Bright
284.0Bright
294.0Bright
304.0Moderate
314.0Moderate
Planning a trip in August

Hazard calendar for Ichinoseki

In seasonPeak

In August, Ichinoseki sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Ichinoseki sits in the Pacific typhoon belt; the season peaks July–October.

Pacific typhoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Ichinoseki?

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

5.5
Sightseeing
5th-best month of the year
5.8
Beach & pool
1st-best month of the year

August is a reasonable time to visit Ichinoseki for sightseeing.

What to pack for Ichinoseki in August

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

In August, Ichinoseki sees daytime highs around 27°C and nights near 21°C. Pack light clothes and rain gear. About 15 days see rain.

light clothesrain gear

Sea temperature near Ichinoseki in August

The nearest coast averages about 22°C 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 43 km away) is warmest in August at about 22°C and coldest in March near 7°C.

It's comfortable for a long swim from Jul 21 to Oct 3 — about 2.5 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb8Bracing
Mar7Bracing
Apr9Bracing
May12Bracing
Jun17Cool
Jul20Cool
Aug22Refreshing
Sep22Refreshing
Oct19Cool
Nov16Cool
Dec13Bracing

UV index in Ichinoseki 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 Ichinoseki 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highVery highModerateLowAug 18UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul6High
Aug9Very high
Sep8Very high
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Ichinoseki 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 Ichinoseki is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1620 µg/m³Dec 1710 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb14Moderate
Mar19Moderate
Apr20Moderate
May19Moderate
Jun14Moderate
Jul12Moderate
Aug11Good
Sep11Good
Oct11Good
Nov11Good
Dec9Good
Location & terrain

Where is Ichinoseki?

Ichinoseki sits at 38.9°N, 141.1°E, 30 m above sea level, in Japan. The nearest listed city is Kurihara, 22 km away.

Topography around Ichinoseki

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

Within 3 km, the terrain around Ichinoseki has only modest variations in elevation — a maximum elevation change of 150 m around an average of 63 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 590 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,889 m.

The land around Ichinoseki is covered by trees (52%) and artificial surfaces (35%) within 3 km, trees (74%) within 16 km, and trees (64%) within 80 km.

3 km
150 m
16 km
590 m
80 km
1,889 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Kurihara 22 km · Tome 23 km · Mizusawa 24 km · Ōshū 25 km · Kanegasaki 32 km · Kesennuma 38 km · Ōsaki 39 km · Kitakami 41 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 Ichinoseki (38.9167°, 141.1333°, elevation 30 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).