Hachinohe weather in August

In August, Hachinohe sees average daytime highs of 27°C and overnight lows near 20°C, with 132 mm of rain across 13 wet days and about 13.6 hours of daylight. It is the 1st-warmest and 1st-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 17% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 12 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Hachinohe's 10th-clearest and 11th-windiest month. For the whole year in context, see Hachinohe's year-round climate.

Daytime high
27°
1st warmest
Overnight low
20°
12th coldest
Rainfall
132 mm
13 wet days
Daylight
13 h 36 min
4:49 AM – 6:27 PM
Cloud cover
71%
10th clearest
Wind
10 km/h
11th windiest
Solar energy
4.49 kWh/m²
Travel score
6.0
out of 10

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 Hachinohe reaches about 27°C in the afternoon and slips back to 20°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 31°C. Set against its neighbours, August runs about 2°C warmer than July and about 3°C warmer than September.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12721
22721
32721
42721
52721
62721
72721
82721
92721
102721
112721
122721
132721
142721
152721
162720
172720
182720
192720
202720
212720
222620
232620
242620
252620
262620
272620
282620
292619
302619
312619

How August really feels in Hachinohe

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.

Hachinohe weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°457.36.39.40.0
Feb / -4°477.46.310.40.0
Mar / -0°7210.75.511.71.0
Apr14° / 7811.91.5133.7
May18° / 11°8811.4014.25.7
Jun21° / 15°9110.7014.86.1
Jul25° / 19°13213.4014.66.0
Aug27° / 20°13213013.66.0
Sep24° / 16°12711.2012.36.3
Oct18° / 10°1029.3010.95.8
Nov11° / 54919.72.9
Dec / -1°5083.89.20.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% 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 69%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23268
33169
43070
53070
63070
73070
83070
93070
103070
113070
123070
133169
143169
153169
163169
173268
183367
193268
203268
213367
223367
233367
243367
253367
263268
273268
283268
293169
303169
313169

Chance of precipitation in August

Any precipitation

Hachinohe gets around 132 mm of rain over 13 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 41% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
338
438
538
639
739
839
940
1040
1140
1241
1341
1442
1542
1642
1743
1843
1943
2043
2143
2243
2343
2443
2543
2643
2743
2843
2942
3042
3142

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 37% of days. Sticky, muggy-or-worse air turns up on roughly 68% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1171937350
2171837360
3171837370
4171837370
5171837370
6171837370
7171837370
8161837370
9161838360
10161939360
11161939350
12161940340
13161940330
14162041330
15162041320
16172041310
17172141300
18282140290
19282140290
20292239280
212102339270
222102338260
232112437250
242122537250
252122636240
262132735230
272132834221
282142934211
292143033201
302153132191
313153232181

Wind in August

Winds average 10 km/h in August.

Across August, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3011calm
3111calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 12 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 72 minutes over August. Sunrise moves from 4:35 AM to 5:04 AM, and sunset from 6:45 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.24:356:45
214.14:366:44
314.14:376:43
414.14:386:42
514.04:396:41
614.04:406:40
714.04:416:39
813.94:416:37
913.94:426:36
1013.94:436:35
1113.84:446:34
1213.84:456:32
1313.74:466:31
1413.74:476:30
1513.74:486:28
1613.64:496:27
1713.64:506:25
1813.54:516:24
1913.54:526:22
2013.54:536:21
2113.44:546:19
2213.44:556:18
2313.34:566:16
2413.34:576:15
2513.24:586:13
2613.24:596:12
2713.25:006:10
2813.15:016:09
2913.15:026:07
3013.05:036:05
3113.05:046:04

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.49 kWh/m².

For context, solar energy here swings from a low near 1.87 kWh/m² to a high of 5.52 kWh/m² in May across the year — August's 4.49 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.7Bright
114.6Bright
124.6Bright
134.6Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.4Bright
194.4Bright
204.4Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.1Bright
314.1Bright
Planning a trip in August

Hazard calendar for Hachinohe

In seasonPeak

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

Hachinohe 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 Hachinohe?

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

6.0
Sightseeing
3rd-best month of the year
5.9
Beach & pool
1st-best month of the year

August is a reasonable time to visit Hachinohe for sightseeing.

What to pack for Hachinohe in August

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

In August, Hachinohe sees daytime highs around 27°C and nights near 20°C. Worth packing: light clothes and rain gear. About 13 days see rain.

light clothesrain gear

Sea temperature near Hachinohe in August

The nearest coast averages about 21°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 17 km away) is warmest in August at about 21°C and coldest in March near 7°C.

It's comfortable for a long swim from Aug 8 to Sep 26 — about 1.6 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan10Bracing
Feb8Bracing
Mar7Bracing
Apr8Bracing
May10Bracing
Jun14Bracing
Jul18Cool
Aug21Refreshing
Sep21Refreshing
Oct18Cool
Nov15Cool
Dec12Bracing

UV index in Hachinohe 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 Hachinohe peaks around August 19 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 19UV 8Jan 10UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr6High
May8Very high
Jun7Very high
Jul5Moderate
Aug9Very high
Sep7High
Oct5Moderate
Nov2Moderate
Dec1Low

Air quality in Hachinohe 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 Hachinohe is worst in March — around 23 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (August, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2323 µg/m³Aug 1012 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar23Moderate
Apr23Moderate
May21Moderate
Jun15Moderate
Jul12Moderate
Aug12Moderate
Sep14Moderate
Oct14Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Hachinohe?

Hachinohe sits at 40.5°N, 141.5°E, 20 m above sea level, in Japan. The nearest listed city is Hitokawame, 16 km away.

Topography around Hachinohe

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

Within 3 km, the terrain around Hachinohe has only modest variations in elevation — a maximum elevation change of 109 m around an average of 29 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 887 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,723 m.

The land around Hachinohe is covered by artificial surfaces (65%) and trees (26%) within 3 km, trees (50%) and water (27%) within 16 km, and trees (59%) and water (33%) within 80 km.

3 km
109 m
16 km
887 m
80 km
1,723 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Hitokawame 16 km · Hakurōmachi 17 km · Nanaku 22 km · Misawa 23 km · Ōno 26 km · Towada 28 km · Ninohe 28 km · Toyota 35 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 Hachinohe (40.5°, 141.5°, elevation 20 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).