Kuroishi weather in January

In January, Kuroishi sees average daytime highs of 0°C and overnight lows near -5°C, with 74 mm of precipitation across 15.9 wet days and about 9.4 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 0°C through the month. The sky is clear or mostly clear about 5% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 06 min at the start of January to 9 h 48 min by month's end. Set against the rest of the year, January is Kuroishi's 11th-clearest and 3rd-windiest month. For the whole year in context, see Kuroishi's year-round climate.

Daytime high
12th warmest
Overnight low
-5°
1st coldest
Precipitation
74 mm
15.9 wet days
Daylight
9 h 24 min
7:05 AM – 4:29 PM
Cloud cover
73%
11th clearest
Wind
12 km/h
3rd windiest
Solar energy
2.14 kWh/m²
Travel score
0.0
out of 10

Kuroishi is city in Aomori Prefecture, Japan.

Density
178/km²
people per km²
Founded
1954

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 0°C through the month.

A typical January day in Kuroishi reaches about 0°C in the afternoon and slips back to -5°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between -3°C and 4°C. Set against its neighbours, January runs about 3°C cooler than December and about 1°C cooler than February.

-10°-5°151015202531
Avg high (°C)Avg low (°C)
11-4
21-4
31-4
41-4
51-4
61-4
71-4
81-4
91-4
100-4
110-4
120-4
130-5
140-5
150-5
160-5
170-5
180-5
190-5
200-5
210-5
220-5
230-5
240-5
250-5
260-5
270-5
280-5
290-5
300-5
310-5

How January really feels in Kuroishi

Once humidity and wind are folded in, January 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 January is cold — wind chill drags the overnight "feels like" below the raw low.

Kuroishi weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°7415.920.49.40.0
Feb / -4°7114.717.110.40.0
Mar / -2°8915.411.811.70.3
Apr12° / 8713.32.313.13.1
May18° / 9812.5014.25.4
Jun22° / 14°9811.8014.96.1
Jul25° / 19°14914.8014.65.9
Aug27° / 20°16915.2013.65.7
Sep23° / 16°14813.3012.36.0
Oct17° / 11913.50.110.94.8
Nov / 10215.54.89.71.8
Dec / -2°9717.316.89.10.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 20% of January, with mostly cloudy or overcast conditions the remaining 75%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22674
32674
42674
52674
62674
72674
82674
92575
102476
112476
122476
132476
142476
152377
162377
172377
182377
192377
202476
212476
222476
232476
242476
252476
262575
272575
282575
292674
302674
312674

Chance of precipitation in January

Any precipitationSnow

Kuroishi gets around 74 mm of rain and snow over 15.9 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 51% and peaks near 55% on the wettest days, and about 20 days bring snow.

0%20%40%60%80%151015202531
Rain chance (%)Snow chance (%)
15563
25564
35564
45565
55465
65365
75365
85266
95266
105166
115066
125066
134966
144966
154966
164966
174866
184966
194965
204965
214965
225065
235066
245166
255166
265166
275166
285266
295266
305266
315266

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January 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 January

Winds average 12 km/h in January.

Across January, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 06 min at the start of January to 9 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over January. Sunrise moves from 7:07 AM to 6:56 AM, and sunset from 4:15 PM to 4:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.17:074:15
29.17:074:16
39.27:074:16
49.27:074:17
59.27:074:18
69.27:074:19
79.27:074:20
89.27:074:21
99.27:074:22
109.37:074:23
119.37:074:24
129.37:064:25
139.37:064:26
149.37:064:27
159.47:064:28
169.47:054:29
179.47:054:30
189.47:044:31
199.57:044:32
209.57:034:33
219.57:034:34
229.57:024:35
239.67:024:36
249.67:014:38
259.67:014:39
269.77:004:40
279.76:594:41
289.76:594:42
299.86:584:43
309.86:574:45
319.86:564:46

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.14 kWh/m².

For context, solar energy here swings from a low near 1.71 kWh/m² to a high of 5.49 kWh/m² in May across the year — January's 2.14 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
92.0Dim
102.0Dim
112.0Dim
122.0Moderate
132.0Moderate
142.0Moderate
152.1Moderate
162.1Moderate
172.1Moderate
182.1Moderate
192.2Moderate
202.2Moderate
212.2Moderate
222.3Moderate
232.3Moderate
242.3Moderate
252.3Moderate
262.4Moderate
272.4Moderate
282.4Moderate
292.5Moderate
302.5Moderate
312.5Moderate
Planning a trip in January

Hazard calendar for Kuroishi

In seasonPeak

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

Kuroishi 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 January a good time to visit Kuroishi?

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

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

January is a weaker month for outdoor sightseeing in Kuroishi.

What to pack for Kuroishi in January

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

In January, Kuroishi sees daytime highs around 0°C and nights near -5°C. Pack a warm layer, a heavy coat and rain gear. About 16 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Kuroishi in January

The nearest coast averages about 10°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 35 km away) is warmest in August at about 23°C and coldest in March near 8°C.

It's comfortable for a long swim from Jul 24 to Oct 7 — about 2.5 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan10Bracing
Feb8Bracing
Mar8Bracing
Apr8Bracing
May11Bracing
Jun15Cool
Jul19Cool
Aug23Refreshing
Sep22Refreshing
Oct19Cool
Nov15Cool
Dec12Bracing

UV index in Kuroishi in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kuroishi peaks around August 19 at about 8 (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 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 19UV 8Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar3Moderate
Apr6High
May8Very high
Jun8Very high
Jul5Moderate
Aug9Very high
Sep7High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Kuroishi in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Kuroishi is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1620 µg/m³Dec 169 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb13Moderate
Mar18Moderate
Apr20Moderate
May18Moderate
Jun13Moderate
Jul12Good
Aug10Good
Sep10Good
Oct10Good
Nov9Good
Dec8Good
Location & terrain

Where is Kuroishi?

Kuroishi sits at 40.6°N, 140.6°E, 45 m above sea level, in Japan. The nearest listed city is Hirakawa, 7.0 km away.

Topography around Kuroishi

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

Within 3 km, the terrain around Kuroishi has only modest variations in elevation — a maximum elevation change of 63 m around an average of 38 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 824 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,614 m.

The land around Kuroishi is covered by cropland (54%) and artificial surfaces (30%) within 3 km, trees (59%) and cropland (26%) within 16 km, and trees (56%) and water (34%) within 80 km.

3 km
63 m
16 km
824 m
80 km
1,614 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Hirakawa 7.0 km · Namioka 7.0 km · Hirosaki 11 km · Goshogawara 21 km · Aomori 23 km · Tsugaru 23 km · Shimokizukuri 26 km · Ōdate 42 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 Kuroishi (40.6458°, 140.5835°, elevation 45 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).