Hachimantai weather in July

In July, Hachimantai sees average daytime highs of 24°C and overnight lows near 17°C, with 144 mm of rain across 16.4 wet days and about 14.5 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 26°C by the end. The sky is clear or mostly clear about 12% of the time in July, and the air most often feels muggy.

Daylight stretches from about 14 h 48 min at the start of July to 14 h 12 min by month's end. Set against the rest of the year, July is Hachimantai's 12th-clearest and 11th-windiest month. For the whole year in context, see Hachimantai's year-round climate.

Daytime high
24°
2nd warmest
Overnight low
17°
11th coldest
Rainfall
144 mm
16.4 wet days
Daylight
14 h 36 min
4:24 AM – 6:58 PM
Cloud cover
78%
12th clearest
Wind
7 km/h
11th windiest
Solar energy
4.4 kWh/m²
Travel score
5.6
out of 10

Hachimantai is city in Iwate Prefecture, Japan.

Density
29/km²
people per km²
Founded
2005

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 22°C in the first days to 26°C by the end.

A typical July day in Hachimantai reaches about 24°C in the afternoon and slips back to 17°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 28°C. Set against its neighbours, July runs about 3°C warmer than June and about 1°C cooler than August.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12215
22216
32216
42316
52316
62316
72316
82316
92316
102317
112317
122317
132417
142417
152417
162417
172417
182418
192418
202418
212518
222518
232518
242518
252518
262518
272519
282619
292619
302619
312619

How July really feels in Hachimantai

Once humidity and wind are folded in, July 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

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

Hachimantai weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -9°6010.513.29.50.0
Feb / -8°5910.412.110.40.0
Mar / -4°9014.212.111.70.2
Apr11° / 9014.14132.6
May17° / 9312.70.314.25.1
Jun21° / 13°10512.8014.85.7
Jul24° / 17°14416.4014.55.6
Aug25° / 18°14114.9013.65.9
Sep21° / 14°13812.9012.35.8
Oct15° / 11111.20.110.94.5
Nov / 7612.849.81.4
Dec / -5°7412129.20.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in July, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 11% of July, with mostly cloudy or overcast conditions the remaining 78%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12278
22278
32179
42179
52080
62080
71981
81981
91981
101981
111981
121882
131981
141981
151981
162080
172080
182179
192278
202278
212377
222476
232575
242674
252674
262773
272872
282872
292971
303070
313070

Chance of precipitation in July

Any precipitation

Hachimantai gets around 144 mm of rain over 16.4 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 52% and peaks near 57% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
153
254
354
455
556
656
757
857
957
1057
1157
1256
1356
1455
1554
1654
1753
1852
1952
2051
2150
2250
2349
2448
2547
2647
2746
2846
2945
3045
3145

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the muggy band about 36% of days. Sticky, muggy-or-worse air turns up on roughly 39% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1163735120
2153536130
3143437150
4123338160
5113238180
6103139190
793039210
892938231
982938241
1072838261
1172738271
1262737291
1362636311
1452536331
1552435351
1652434371
1742333392
1842232412
1932031432
2031930452
2131829473
2231728484
2331628504
2421527515
2521426526
2621325546
2721224557
2821123577
2921123568
3021022588
3121021589

Wind in July

Winds average 7 km/h in July.

Across July, 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 July

DaylightNight

Daylight runs from about 14 h 48 min at the start of July to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 4:15 AM to 4:37 AM, and sunset from 7:03 PM to 6:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.84:157:03
214.84:157:03
314.84:167:03
414.84:167:02
514.84:177:02
614.74:177:02
714.74:187:02
814.74:197:02
914.74:197:01
1014.74:207:01
1114.74:207:01
1214.74:217:00
1314.64:227:00
1414.64:236:59
1514.64:236:59
1614.64:246:58
1714.54:256:58
1814.54:266:57
1914.54:266:56
2014.54:276:56
2114.54:286:55
2214.44:296:54
2314.44:306:54
2414.44:306:53
2514.34:316:52
2614.34:326:51
2714.34:336:50
2814.34:346:49
2914.24:356:48
3014.24:366:47
3114.24:376:46

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.4 kWh/m².

For context, solar energy here swings from a low near 1.87 kWh/m² to a high of 5.27 kWh/m² in May across the year — July's 4.4 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in July

Is July a good time to visit Hachimantai?

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

5.6
Sightseeing
4th-best month of the year
4.7
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Hachimantai for sightseeing.

What to pack for Hachimantai in July

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

In July, Hachimantai sees daytime highs around 24°C and nights near 17°C. Pack rain gear. Worth having: light clothes. About 16 days see rain.

rain gearlight clothes

Sea temperature near Hachimantai in July

The nearest coast averages about 18°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 68 km away) is warmest in August at about 21°C and coldest in March near 6°C.

It's comfortable for a long swim from Aug 8 to Sep 25 — about 1.6 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan10Bracing
Feb8Bracing
Mar6Bracing
Apr7Bracing
May10Bracing
Jun14Bracing
Jul18Cool
Aug21Refreshing
Sep21Refreshing
Oct18Cool
Nov15Cool
Dec12Bracing

UV index in Hachimantai in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hachimantai 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 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 Hachimantai in July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.

Air quality in Hachimantai 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 Hachimantai?

Hachimantai sits at 39.9°N, 141.1°E, 228 m above sea level, in Japan. The nearest listed city is Takizawa, 11 km away.

Topography around Hachimantai

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

Within 3 km, the terrain around Hachimantai has only modest variations in elevation — a maximum elevation change of 149 m around an average of 245 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,870 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,117 m.

The land around Hachimantai is covered by cropland (46%) and trees (38%) within 3 km, trees (75%) within 16 km, and trees (84%) within 80 km.

3 km
149 m
16 km
1,870 m
80 km
2,117 m
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Takizawa 11 km · Morioka 22 km · Shizukuishi 26 km · Yahaba 32 km · Semboku 39 km · Hizume 39 km · Hanawa 43 km · Ninohe 46 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 Hachimantai (39.8998°, 141.1299°, elevation 228 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. 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).