Nayoro weather in January

In January, Nayoro sees average daytime highs of -5°C and overnight lows near -12°C, with 61 mm of precipitation across 14.7 wet days and about 9 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 4% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 h 42 min at the start of January to 9 h 30 min by month's end. Set against the rest of the year, January is Nayoro's 12th-clearest and 8th-windiest month. For the whole year in context, see Nayoro's year-round climate.

Daytime high
-5°
12th warmest
Overnight low
-12°
1st coldest
Precipitation
61 mm
14.7 wet days
Daylight
9 hours
7:09 AM – 4:10 PM
Cloud cover
79%
12th clearest
Wind
10 km/h
8th windiest
Solar energy
1.83 kWh/m²
Travel score
0.0
out of 10

Nayoro is city in Hokkaido, Japan.

Density
51/km²
people per km²
Founded
2006

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 Nayoro 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
5-4-12
6-5-12
7-5-12
8-5-12
9-5-12
10-5-12
11-5-12
12-5-12
13-5-12
14-5-12
15-5-12
16-5-13
17-5-13
18-5-13
19-5-13
20-5-13
21-5-13
22-5-13
23-5-13
24-5-13
25-5-13
26-5-13
27-5-13
28-5-13
29-5-13
30-5-13
31-5-13

How January really feels in Nayoro

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.

Nayoro 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°6114.719.190.0
Feb-4° / -12°5212.516.310.20.0
Mar / -7°6914.215.611.60.0
Apr / -1°7413.57.813.21.3
May15° / 8912.90.914.64.1
Jun19° / 10°9112.8015.35.4
Jul22° / 14°13614.60155.8
Aug23° / 15°14914.5013.85.8
Sep19° / 10°13914.9012.35.2
Oct13° / 11615.61.410.83.0
Nov / -3°11418.214.19.40.3
Dec-3° / -9°901821.88.70.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 85%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11684
21684
31585
41585
51585
61486
71486
81486
91486
101486
111486
121486
131585
141585
151585
161684
171684
181882
191882
201882
211882
221684
231684
241684
251585
261585
271585
281486
291387
301288
311288

Chance of precipitation in January

Any precipitationSnow

Nayoro gets around 61 mm of rain and snow over 14.7 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 47% and peaks near 51% on the wettest days, and about 19 days bring snow.

0%20%40%60%80%151015202531
Rain chance (%)Snow chance (%)
15167
25167
35067
45066
54966
64965
74864
84763
94763
104662
114661
124661
134661
144660
154560
164560
174560
184560
194660
204660
214660
224760
234760
244760
254760
264760
274760
284760
294760
304660
314659

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 10 km/h in January.

Across January, 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
111calm
211calm
311calm
411calm
511calm
611calm
711calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 8 h 42 min at the start of January to 9 h 30 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 7:12 AM to 6:58 AM, and sunset from 3:55 PM to 4:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.77:123:55
28.77:123:56
38.77:123:56
48.87:123:57
58.87:123:58
68.87:123:59
78.87:124:00
88.87:124:01
98.87:114:02
108.97:114:03
118.97:114:04
128.97:114:05
138.97:104:06
149.07:104:08
159.07:104:09
169.07:094:10
179.07:094:11
189.17:084:12
199.17:084:13
209.17:074:15
219.27:064:16
229.27:064:17
239.27:054:18
249.37:044:20
259.37:034:21
269.37:034:22
279.47:024:24
289.47:014:25
299.47:004:26
309.56:594:28
319.56:584:29

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 1.83 kWh/m².

For context, solar energy here swings from a low near 1.48 kWh/m² to a high of 5.29 kWh/m² in May across the year — January's 1.83 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
11.6Dim
21.6Dim
31.6Dim
41.6Dim
51.6Dim
61.6Dim
71.7Dim
81.7Dim
91.7Dim
101.7Dim
111.7Dim
121.7Dim
131.8Dim
141.8Dim
151.8Dim
161.8Dim
171.8Dim
181.9Dim
191.9Dim
201.9Dim
211.9Dim
221.9Dim
232.0Dim
242.0Moderate
252.0Moderate
262.1Moderate
272.1Moderate
282.1Moderate
292.1Moderate
302.2Moderate
312.2Moderate
Planning a trip in January

Hazard calendar for Nayoro

In seasonPeak

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

Nayoro 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 Nayoro?

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
7th-best month of the year

January is a weaker month for outdoor sightseeing in Nayoro.

What to pack for Nayoro in January

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

In January, Nayoro sees daytime highs around -5°C and nights near -12°C. Pack a warm layer, a heavy coat and rain gear. About 15 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Nayoro in January

The nearest coast averages about 0°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 45 km away) is warmest in August at about 18°C and coldest in February near -0°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan0Bracing
Feb0Bracing
Mar0Bracing
Apr2Bracing
May5Bracing
Jun10Bracing
Jul14Bracing
Aug18Cool
Sep17Cool
Oct13Bracing
Nov7Bracing
Dec3Bracing

UV index in Nayoro 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 Nayoro peaks around August 14 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 14UV 8Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr6High
May7Very high
Jun7High
Jul7Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Nayoro 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 Nayoro is worst in April — around 17 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1516 µg/m³Dec 197 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb10Good
Mar15Moderate
Apr17Moderate
May15Moderate
Jun10Good
Jul10Good
Aug8Good
Sep7Good
Oct9Good
Nov8Good
Dec7Good
Location & terrain

Where is Nayoro?

Nayoro sits at 44.4°N, 142.5°E, 97 m above sea level, in Japan. The nearest listed city is Minamishibetsuchō, 23 km away.

Topography around Nayoro

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

Within 3 km, the terrain around Nayoro has only modest variations in elevation — a maximum elevation change of 173 m around an average of 109 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 916 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,225 m.

The land around Nayoro is covered by cropland (39%), artificial surfaces (26%) and trees (25%) within 3 km, trees (71%) and cropland (23%) within 16 km, and trees (68%) and water (21%) within 80 km.

3 km
173 m
16 km
916 m
80 km
2,225 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Minamishibetsuchō 23 km · Asahikawa 65 km · Mombetsu 71 km · Fukagawa 79 km · Rumoi 80 km · Engaru 93 km · Ashibetsu 96 km · Takikawa 99 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 Nayoro (44.3506°, 142.4578°, elevation 97 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).