Ashibetsu weather in January

In January, Ashibetsu sees average daytime highs of -5°C and overnight lows near -12°C, with 67 mm of precipitation across 16.2 wet days and about 9.1 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near -5°C through the month. The sky is clear or mostly clear about 7% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 h 48 min at the start of January to 9 h 36 min by month's end. Set against the rest of the year, January is Ashibetsu's 11th-clearest and 8th-windiest month. For the whole year in context, see Ashibetsu's year-round climate.

Daytime high
-5°
12th warmest
Overnight low
-12°
1st coldest
Precipitation
67 mm
16.2 wet days
Daylight
9 h 06 min
7:07 AM – 4:14 PM
Cloud cover
75%
11th clearest
Wind
8 km/h
8th windiest
Solar energy
2.02 kWh/m²
Travel score
0.0
out of 10

Ashibetsu is city in Hokkaidō, Japan.

Density
22/km²
people per km²
Founded
1953

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 -5°C through the month.

A typical January day in Ashibetsu reaches about -5°C in the afternoon and slips back to -12°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between -9°C and -1°C. Set against its neighbours, January runs about 2°C cooler than December and about 1°C cooler than February.

-20°-15°-10°-5°151015202531
Avg high (°C)Avg low (°C)
1-4-11
2-4-11
3-4-11
4-4-11
5-4-11
6-4-11
7-4-11
8-4-11
9-4-11
10-5-12
11-5-12
12-5-12
13-5-12
14-5-12
15-5-12
16-5-12
17-5-12
18-5-12
19-5-12
20-5-12
21-5-12
22-5-12
23-5-12
24-5-12
25-5-12
26-5-12
27-5-12
28-5-12
29-5-12
30-5-12
31-5-12

How January really feels in Ashibetsu

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
31 feel bitter (≤ -10°C)

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

Ashibetsu 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° / -12°6716.220.59.10.0
Feb-3° / -11°5614.317.910.20.0
Mar / -7°7515.616.611.60.0
Apr / 8014.17.413.21.6
May16° / 9413.30.614.54.4
Jun19° / 12°8812.4015.25.6
Jul23° / 16°14214.8014.95.9
Aug24° / 17°17614.8013.85.9
Sep20° / 11°14414.4012.35.4
Oct13° / 11915.71.510.83.2
Nov / -3°11318.713.49.50.4
Dec-2° / -9°9218.722.18.80.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 79%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21882
31882
41882
51882
61882
71981
82080
92080
102080
112179
122278
132278
142476
152476
162476
172575
182575
192575
202476
212476
222476
232476
242377
252278
262278
272179
282179
292179
302179
312080

Chance of precipitation in January

Any precipitationSnow

Ashibetsu gets around 67 mm of rain and snow over 16.2 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 53% and peaks near 58% on the wettest days, and about 21 days bring snow. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)Snow chance (%)
15871
25870
35770
45770
55770
65669
75569
85568
95468
105468
115367
125367
135367
145267
155266
165266
175166
185166
195166
205165
215165
225165
235165
245165
255165
265165
275165
285165
295165
305165
315165

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 8 km/h in January.

Across January, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 8 h 48 min at the start of January to 9 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over January. Sunrise moves from 7:10 AM to 6:57 AM, and sunset from 3:59 PM to 4:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.87:103:59
28.87:104:00
38.87:104:01
48.97:104:01
58.97:104:02
68.97:104:03
78.97:104:04
88.97:104:05
98.97:104:06
109.07:094:07
119.07:094:08
129.07:094:09
139.07:094:10
149.17:084:11
159.17:084:13
169.17:074:14
179.17:074:15
189.27:064:16
199.27:064:17
209.27:054:18
219.27:054:20
229.37:044:21
239.37:034:22
249.37:034:23
259.47:024:25
269.47:014:26
279.47:004:27
289.57:004:28
299.56:594:30
309.66:584:31
319.66:574:32

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.02 kWh/m².

For context, solar energy here swings from a low near 1.6 kWh/m² to a high of 5.25 kWh/m² in May across the year — January's 2.02 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
11.8Dim
21.8Dim
31.8Dim
41.8Dim
51.8Dim
61.8Dim
71.8Dim
81.9Dim
91.9Dim
101.9Dim
111.9Dim
121.9Dim
131.9Dim
141.9Dim
152.0Dim
162.0Dim
172.0Moderate
182.0Moderate
192.1Moderate
202.1Moderate
212.1Moderate
222.1Moderate
232.2Moderate
242.2Moderate
252.2Moderate
262.3Moderate
272.3Moderate
282.3Moderate
292.4Moderate
302.4Moderate
312.4Moderate
Planning a trip in January

Is January a good time to visit Ashibetsu?

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

0.0
Sightseeing
9th-best month of the year
0.0
Beach & pool
8th-best month of the year

January is a weaker month for outdoor sightseeing in Ashibetsu.

What to pack for Ashibetsu in January

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

In January, Ashibetsu sees daytime highs around -5°C and nights near -12°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 Ashibetsu in January

The nearest coast averages about 6°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 61 km away) is warmest in August at about 21°C and coldest in February near 5°C.

It's comfortable for a long swim from Aug 3 to Sep 20 — about 1.6 months when the water holds above 20°C.

10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan6Bracing
Feb5Bracing
Mar5Bracing
Apr7Bracing
May10Bracing
Jun14Bracing
Jul18Cool
Aug21Refreshing
Sep21Refreshing
Oct17Cool
Nov13Bracing
Dec9Bracing

UV index in Ashibetsu in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ashibetsu peaks around August 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighHighVery highHighModerateLowAug 17UV 8Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr5High
May7Very high
Jun7High
Jul6High
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Ashibetsu 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 Ashibetsu is worst in April — around 17 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1517 µg/m³Dec 178 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb11Good
Mar16Moderate
Apr17Moderate
May15Moderate
Jun11Good
Jul11Good
Aug9Good
Sep8Good
Oct9Good
Nov9Good
Dec7Good
Location & terrain

Where is Ashibetsu?

Ashibetsu sits at 43.5°N, 142.2°E, 111 m above sea level, in Japan. The nearest listed city is Sunagawa, 23 km away.

Topography around Ashibetsu

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

Within 3 km, the terrain around Ashibetsu has significant variations in elevation — a maximum elevation change of 328 m around an average of 154 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 883 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,253 m.

The land around Ashibetsu is covered by trees (71%) within 3 km, trees (90%) within 16 km, and trees (73%) within 80 km.

3 km
328 m
16 km
883 m
80 km
2,253 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Sunagawa 23 km · Takikawa 23 km · Shimo-furano 24 km · Furano 24 km · Fukagawa 25 km · Asahikawa 32 km · Bibai 33 km · Iwamizawa 49 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 Ashibetsu (43.5097°, 142.1856°, elevation 111 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).