Ichinoseki weather in December

In December, Ichinoseki sees average daytime highs of 6°C and overnight lows near -1°C, with 58 mm of precipitation across 10.1 wet days and about 9.3 hours of daylight. It is the 10th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 8°C in the first days to 4°C by the end. The sky is clear or mostly clear about 26% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 30 min at the start of December to 9 h 18 min by month's end. Set against the rest of the year, December is Ichinoseki's 3rd-clearest and 4th-windiest month. For the whole year in context, see Ichinoseki's year-round climate.

Daytime high
10th warmest
Overnight low
-1°
3rd coldest
Precipitation
58 mm
10.1 wet days
Daylight
9 h 18 min
6:53 AM – 4:10 PM
Cloud cover
59%
3rd clearest
Wind
11 km/h
4th windiest
Solar energy
2.01 kWh/m²
Travel score
0.5
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 December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 8°C in the first days to 4°C by the end.

A typical December day in Ichinoseki reaches about 6°C in the afternoon and slips back to -1°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 2°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)
191
281
381
481
581
670
770
870
970
1070
1160
1260
136-1
146-1
156-1
166-1
176-1
185-1
195-1
205-1
215-1
225-1
235-1
245-2
255-2
265-2
275-2
284-2
294-2
304-2
314-2

How December really feels in Ichinoseki

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.

Ichinoseki 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 / -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 December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 24% of December, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
34951
44951
54951
64852
74852
84852
94951
104852
114951
124951
134951
145050
154951
165050
175050
185149
195149
205149
215149
225248
235347
245347
255248
265347
275347
285347
295347
305446
315446

Chance of precipitation in December

Any precipitationSnow

Ichinoseki gets around 58 mm of rain and snow over 10.1 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 32% and peaks near 33% on the wettest days, and about 5 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1338
2338
3339
43310
53310
63311
73312
83313
93313
103314
113215
123216
133216
143217
153217
163118
173119
183119
193120
203120
213221
223221
233221
243222
253222
263222
273122
283122
293123
303123
313023

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 11 km/h in December.

Across December, 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
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 30 min at the start of December to 9 h 18 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 6:41 AM to 6:59 AM, and sunset from 4:09 PM to 4:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.56:414:09
29.56:424:09
39.46:434:09
49.46:444:09
59.46:454:09
69.46:464:09
79.46:464:09
89.46:474:09
99.36:484:09
109.36:494:09
119.36:504:09
129.36:504:09
139.36:514:09
149.36:524:10
159.36:524:10
169.36:534:10
179.36:544:10
189.36:544:11
199.36:554:11
209.36:554:12
219.36:564:12
229.36:564:12
239.36:574:13
249.36:574:13
259.36:584:14
269.36:584:15
279.36:584:15
289.36:594:16
299.36:594:16
309.36:594:17
319.36:594:18

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.01 kWh/m² — the year's lowest.

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 — December's 2.01 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.1Moderate
22.1Moderate
32.0Moderate
42.0Moderate
52.0Moderate
62.0Moderate
72.0Moderate
82.0Moderate
92.0Dim
102.0Dim
112.0Dim
122.0Dim
132.0Dim
142.0Dim
152.0Moderate
162.0Moderate
172.0Moderate
182.0Moderate
192.0Moderate
202.0Moderate
212.1Moderate
222.1Moderate
232.1Moderate
242.1Moderate
252.1Moderate
262.1Moderate
272.2Moderate
282.2Moderate
292.2Moderate
302.2Moderate
312.2Moderate
Planning a trip in December

Hazard calendar for Ichinoseki

In seasonPeak

In December, 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 December a good time to visit Ichinoseki?

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

0.5
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 Ichinoseki.

What to pack for Ichinoseki in December

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

In December, Ichinoseki sees daytime highs around 6°C and nights near -1°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Ichinoseki in December

The nearest coast averages about 13°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 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 December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 2. 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 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 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
December 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).