Nihommatsu weather in January

In January, Nihommatsu sees average daytime highs of 3°C and overnight lows near -3°C, with 57 mm of precipitation across 9.1 wet days and about 9.7 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 3°C through the month. The sky is clear or mostly clear about 23% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 24 min at the start of January to 10 h 06 min by month's end. Set against the rest of the year, January is Nihommatsu's 3rd-clearest and 3rd-windiest month. For the whole year in context, see Nihommatsu's year-round climate.

Daytime high
12th warmest
Overnight low
-3°
1st coldest
Precipitation
57 mm
9.1 wet days
Daylight
9 h 42 min
6:57 AM – 4:38 PM
Cloud cover
59%
3rd clearest
Wind
12 km/h
3rd windiest
Solar energy
2.64 kWh/m²
Travel score
0.0
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 3°C through the month.

A typical January day in Nihommatsu reaches about 3°C in the afternoon and slips back to -3°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 7°C. Set against its neighbours, January runs about 3°C cooler than December and about 1°C cooler than February.

-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
14-2
24-2
34-2
44-2
54-2
64-2
74-2
83-2
93-3
103-3
113-3
123-3
133-3
143-3
153-3
163-3
173-3
183-3
193-3
203-3
213-3
223-3
233-4
243-4
253-4
263-4
273-4
283-4
293-4
303-4
313-4

How January really feels in Nihommatsu

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.

Nihommatsu weather by month

How January compares with the rest of the year at a glance. January is the 12th-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°579.18.89.70.0
Feb / -3°478.36.910.60.0
Mar / -0°8611.25.611.71.4
Apr14° / 9511.51.412.94.1
May20° / 11°9711.50145.9
Jun23° / 15°11213.1014.55.9
Jul26° / 19°17317.3014.35.2
Aug28° / 21°13014.7013.45.4
Sep24° / 17°15113.2012.36.0
Oct18° / 10°13610.80115.5
Nov12° / 678.10.5103.2
Dec / -1°499.35.39.50.5

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 31% of January, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36139
46040
56040
65941
75842
85743
95644
105545
115446
125347
135347
145149
155149
165050
174951
184951
194951
205050
215050
225050
235050
245149
255149
265248
275248
285347
295347
305446
315446

Chance of precipitation in January

Any precipitationSnow

Nihommatsu gets around 57 mm of rain and snow over 9.1 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 29% and peaks near 30% on the wettest days, and about 9 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
13026
23026
33026
43026
52926
62926
72926
82926
92926
102927
112927
122927
132927
142927
152928
162928
172928
182928
192929
202929
212929
222930
233030
243030
253030
263031
273030
283030
293030
302930
312930

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
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 24 min at the start of January to 10 h 06 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 6:58 AM to 6:50 AM, and sunset from 4:25 PM to 4:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.46:584:25
29.56:584:26
39.56:584:26
49.56:584:27
59.56:594:28
69.56:594:29
79.56:594:29
89.56:594:30
99.56:594:31
109.66:594:32
119.66:584:33
129.66:584:34
139.66:584:35
149.66:584:36
159.76:584:37
169.76:574:38
179.76:574:39
189.76:574:40
199.76:564:41
209.86:564:42
219.86:564:43
229.86:554:44
239.86:554:45
249.96:544:46
259.96:544:47
269.96:534:48
279.96:534:49
2810.06:524:50
2910.06:514:51
3010.06:514:52
3110.16:504:53

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.64 kWh/m².

For context, solar energy here swings from a low near 2.19 kWh/m² to a high of 5.38 kWh/m² in May across the year — January's 2.64 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.4Moderate
22.4Moderate
32.4Moderate
42.4Moderate
52.5Moderate
62.5Moderate
72.5Moderate
82.5Moderate
92.5Moderate
102.5Moderate
112.5Moderate
122.5Moderate
132.5Moderate
142.5Moderate
152.5Moderate
162.6Moderate
172.6Moderate
182.6Moderate
192.6Moderate
202.7Moderate
212.7Moderate
222.7Moderate
232.8Moderate
242.8Moderate
252.8Moderate
262.8Moderate
272.9Moderate
282.9Moderate
292.9Moderate
303.0Moderate
313.0Moderate
Planning a trip in January

Hazard calendar for Nihommatsu

In seasonPeak

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

Nihommatsu 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 Nihommatsu?

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

0.0
Sightseeing
11th-best month of the year
0.0
Beach & pool
9th-best month of the year

January is a weaker month for outdoor sightseeing in Nihommatsu.

What to pack for Nihommatsu in January

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

In January, Nihommatsu sees daytime highs around 3°C and nights near -3°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 9 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Nihommatsu in January

The nearest coast averages about 12°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 23°C and coldest in March near 10°C.

It's comfortable for a long swim from Jul 9 to Oct 11 — about 3.1 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb10Bracing
Mar10Bracing
Apr11Bracing
May14Bracing
Jun18Cool
Jul21Refreshing
Aug23Refreshing
Sep23Refreshing
Oct20Cool
Nov17Cool
Dec15Bracing

UV index in Nihommatsu 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 Nihommatsu peaks around August 11 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 11UV 9Jan 10UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun8Very high
Jul9Very high
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Nihommatsu 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 Nihommatsu is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 1810 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr21Moderate
May20Moderate
Jun16Moderate
Jul14Moderate
Aug12Good
Sep11Good
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Nihommatsu?

Nihommatsu sits at 37.6°N, 140.4°E, 224 m above sea level, in Japan. The nearest listed city is Motomiya, 8.0 km away.

Topography around Nihommatsu

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

Within 3 km, the terrain around Nihommatsu has only modest variations in elevation — a maximum elevation change of 181 m around an average of 235 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,657 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,110 m.

The land around Nihommatsu is covered by trees (55%) and artificial surfaces (24%) within 3 km, trees (77%) within 16 km, and trees (71%) within 80 km.

3 km
181 m
16 km
1,657 m
80 km
2,110 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Motomiya 8.0 km · Miharu 17 km · Fukushima 19 km · Funehikimachi-funehiki 20 km · Kōriyama 21 km · Tamura 23 km · Date 27 km · Hobaramachi 28 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 Nihommatsu (37.5833°, 140.4333°, elevation 224 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).