Hachinohe weather in May

In May, Hachinohe sees average daytime highs of 18°C and overnight lows near 11°C, with 88 mm of precipitation across 11.4 wet days and about 14.2 hours of daylight. It is the 5th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 20°C by the end. The sky is clear or mostly clear about 30% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 42 min at the start of May to 14 h 36 min by month's end. Set against the rest of the year, May is Hachinohe's 8th-clearest and 8th-windiest month. For the whole year in context, see Hachinohe's year-round climate.

Daytime high
18°
5th warmest
Overnight low
11°
8th coldest
Precipitation
88 mm
11.4 wet days
Daylight
14 h 12 min
4:23 AM – 6:38 PM
Cloud cover
63%
8th clearest
Wind
12 km/h
8th windiest
Solar energy
5.52 kWh/m²
Travel score
5.7
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 17°C in the first days to 20°C by the end.

A typical May day in Hachinohe reaches about 18°C in the afternoon and slips back to 11°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 23°C. Set against its neighbours, May runs about 5°C warmer than April and about 3°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1178
2179
3179
4179
5179
6179
7179
8189
91810
101810
111810
121810
131810
141810
151810
161811
171911
181911
191911
201911
211911
221911
231912
241912
252012
262012
272012
282012
292012
302012
312013

How May really feels in Hachinohe

Once humidity and wind are folded in, May 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

May 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 May compares with the rest of the year at a glance. May is the 5th-warmest and 6th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24852
34852
44852
54753
64654
74654
84555
94456
104456
114555
124456
134357
144357
154456
164456
174357
184456
194456
204456
214357
224357
234357
244456
254456
264456
274357
284357
294357
304357
314357

Chance of precipitation in May

Any precipitationSnow

Hachinohe gets around 88 mm of rain and snow over 11.4 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 36% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1382
2382
3381
4371
5371
6371
7371
8370
9370
10370
11370
12370
13370
14370
15370
16370
17370
18370
19370
20370
21360
22360
23360
24360
25360
26350
27350
28350
29340
30340
31340

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 92% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19910
29910
39910
49910
59820
69820
79820
89820
99820
109730
119730
129730
139640
149640
159550
169550
179460
189460
199370
209280
219190
2289101
2388111
2486131
2585141
2684151
2782171
2881181
2979201
3077212
3175232

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 11 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012calm
2112calm
2212calm
2312calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 42 min at the start of May to 14 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over May. Sunrise moves from 4:40 AM to 4:12 AM, and sunset from 6:22 PM to 6:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.74:406:22
213.74:396:23
313.84:386:24
413.84:366:25
513.94:356:26
613.94:346:27
713.94:336:28
814.04:316:30
914.04:306:31
1014.04:296:32
1114.14:286:33
1214.14:276:34
1314.14:266:35
1414.24:256:36
1514.24:246:37
1614.24:236:38
1714.34:226:39
1814.34:216:39
1914.34:206:40
2014.44:196:41
2114.44:196:42
2214.44:186:43
2314.54:176:44
2414.54:166:45
2514.54:156:46
2614.54:156:47
2714.64:146:48
2814.64:146:48
2914.64:136:49
3014.64:126:50
3114.64:126:51

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.52 kWh/m² — the sunniest month for solar.

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 — May's 5.52 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.5Bright
45.5Bright
55.5Bright
65.4Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in May

Hazard calendar for Hachinohe

In seasonPeak

In May, 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 May a good time to visit Hachinohe?

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

5.7
Sightseeing
6th-best month of the year
2.2
Beach & pool
5th-best month of the year

May is a reasonable time to visit Hachinohe for sightseeing.

What to pack for Hachinohe in May

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

In May, Hachinohe sees daytime highs around 18°C and nights near 11°C. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

Sea temperature near Hachinohe in May

The nearest coast averages about 10°C in May — 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 May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. 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 May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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
May 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).