Hachinohe weather in December

In December, Hachinohe sees average daytime highs of 5°C and overnight lows near -1°C, with 50 mm of precipitation across 8 wet days and about 9.2 hours of daylight. It is the 10th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 7°C in the first days to 3°C by the end. The sky is clear or mostly clear about 31% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 18 min at the start of December to 9 h 06 min by month's end. Set against the rest of the year, December is Hachinohe's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Hachinohe's year-round climate.

Daytime high
10th warmest
Overnight low
-1°
3rd coldest
Precipitation
50 mm
8 wet days
Daylight
9 h 06 min
6:57 AM – 4:04 PM
Cloud cover
57%
2nd clearest
Wind
16 km/h
2nd windiest
Solar energy
1.87 kWh/m²
Travel score
0.2
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 7°C in the first days to 3°C by the end.

A typical December day in Hachinohe reaches about 5°C in the afternoon and slips back to -1°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 0°C and 10°C. Set against its neighbours, December runs about 6°C cooler than November and about 3°C warmer than January.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
171
271
371
470
570
660
760
860
960
106-1
115-1
125-1
135-1
145-1
155-1
165-1
174-1
184-2
194-2
204-2
214-2
224-2
234-2
244-2
254-2
263-2
273-2
283-2
293-2
303-2
313-3

How December really feels in Hachinohe

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 31 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
31
wind chill below the day's low

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Hachinohe weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 10th-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 December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 25% of December, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25149
35248
45347
55347
65446
75446
85545
95545
105743
115743
125743
135743
145743
155842
165743
175743
185743
195644
205644
215743
225743
235743
245743
255743
265644
275644
285743
295743
305743
315743

Chance of precipitation in December

Any precipitationSnow

Hachinohe gets around 50 mm of rain and snow over 8 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 26% and peaks near 31% on the wettest days, and about 4 days bring snow. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1319
2319
3309
4309
53010
62910
72910
82810
92810
102810
112710
122710
132610
142610
152611
162511
172512
182512
192413
202413
212414
222414
232414
242415
252315
262315
272316
282316
292316
302317
312317

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in December

Winds average 16 km/h in December.

Across December, daily wind ranges from about 15 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 18 min at the start of December to 9 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 6:44 AM to 7:03 AM, and sunset from 4:03 PM to 4:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.36:444:03
29.36:454:03
39.36:464:03
49.36:474:03
59.26:484:03
69.26:494:03
79.26:504:03
89.26:514:03
99.26:514:03
109.26:524:03
119.26:534:03
129.26:544:03
139.16:554:03
149.16:554:03
159.16:564:04
169.16:574:04
179.16:574:04
189.16:584:04
199.16:584:05
209.16:594:05
219.16:594:06
229.17:004:06
239.17:004:07
249.17:014:07
259.17:014:08
269.17:024:08
279.17:024:09
289.17:024:09
299.17:024:10
309.17:034:11
319.17:034:11

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.87 kWh/m² — the year's lowest.

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 — December's 1.87 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
11.9Dim
21.9Dim
31.9Dim
41.9Dim
51.9Dim
61.9Dim
71.9Dim
81.9Dim
91.9Dim
101.9Dim
111.9Dim
121.9Dim
131.9Dim
141.9Dim
151.9Dim
161.9Dim
171.9Dim
181.9Dim
191.9Dim
201.9Dim
211.9Dim
221.9Dim
231.9Dim
241.9Dim
252.0Dim
262.0Dim
272.0Dim
282.0Moderate
292.0Moderate
302.0Moderate
312.0Moderate
Planning a trip in December

Hazard calendar for Hachinohe

In seasonPeak

In December, 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 December a good time to visit Hachinohe?

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

0.2
Sightseeing
10th-best month of the year
0.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Hachinohe.

What to pack for Hachinohe in December

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

In December, Hachinohe sees daytime highs around 5°C and nights near -1°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 8 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Hachinohe in December

The nearest coast averages about 12°C in December — 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 December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. 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 December

GoodModeratePoorUnhealthyVery unhealthy

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