Shirone weather in January

In January, Shirone sees average daytime highs of 6°C and overnight lows near 1°C, with 171 mm of precipitation across 24.7 wet days and about 9.7 hours of daylight. It is the 12th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 6°C through the month. The sky is clear or mostly clear about 3% 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 hours by month's end. Set against the rest of the year, January is Shirone's 12th-clearest and 1st-windiest month. For the whole year in context, see Shirone's year-round climate.

Daytime high
12th warmest
Overnight low
2nd coldest
Precipitation
171 mm
24.7 wet days
Daylight
9 h 42 min
7:04 AM – 4:43 PM
Cloud cover
76%
12th clearest
Wind
13 km/h
1st windiest
Solar energy
2 kWh/m²
Travel score
0.2
out of 10

Shirone is human settlement in Japan.

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 6°C through the month.

A typical January day in Shirone reaches about 6°C in the afternoon and slips back to 1°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 2°C and 9°C. Set against its neighbours, January runs about 3°C cooler than December and on par with February.

-5°10°151015202531
Avg high (°C)Avg low (°C)
172
262
362
462
562
662
762
861
961
1061
1161
1261
1361
1461
1551
1651
1751
1851
1951
2051
2151
2251
2351
2451
2551
2651
2751
2851
2951
3051
3151

How January really feels in Shirone

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.

Shirone weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 17124.716.49.70.2
Feb / 1172013.110.50.4
Mar10° / 12219.36.311.71.8
Apr16° / 9213.80.612.94.4
May21° / 13°96120146.2
Jun25° / 18°11712.1014.66.3
Jul28° / 22°21415.8014.35.0
Aug30° / 23°15013.7013.54.6
Sep26° / 20°14014.3012.35.8
Oct20° / 13°14614.60115.7
Nov14° / 15618.60.4103.4
Dec / 18223.38.99.41.1

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of January, with mostly cloudy or overcast conditions the remaining 80%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12377
22179
32179
42179
52179
62080
72080
82080
92080
102080
112080
121981
131981
141981
151981
161981
171981
181981
191981
201981
211981
222080
232080
242080
252080
262179
272179
282179
292179
302179
312278

Chance of precipitation in January

Any precipitationSnow

Shirone gets around 171 mm of rain and snow over 24.7 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 79% and peaks near 81% on the wettest days, and about 16 days bring snow.

0%20%40%60%80%151015202531
Rain chance (%)Snow chance (%)
17945
27946
38047
48048
58149
68149
78150
88150
98151
108051
118051
128052
138052
147952
157953
167953
177953
187953
197854
207854
217854
227855
237955
247956
257957
267957
277958
287958
297958
307958
317958

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 13 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 24 min at the start of January to 10 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over January. Sunrise moves from 7:04 AM to 6:56 AM, and sunset from 4:30 PM to 4:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.47:044:30
29.47:044:31
39.47:054:31
49.57:054:32
59.57:054:33
69.57:054:34
79.57:054:35
89.57:054:35
99.57:054:36
109.57:054:37
119.67:054:38
129.67:044:39
139.67:044:40
149.67:044:41
159.67:044:42
169.77:044:43
179.77:034:44
189.77:034:45
199.77:034:46
209.77:024:47
219.87:024:48
229.87:014:49
239.87:014:50
249.87:004:51
259.97:004:52
269.96:594:53
279.96:594:54
2810.06:584:55
2910.06:574:56
3010.06:574:57
3110.06:564:59

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2 kWh/m².

For context, solar energy here swings from a low near 1.64 kWh/m² to a high of 5.6 kWh/m² in May across the year — January's 2 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
81.8Dim
91.8Dim
101.8Dim
111.9Dim
121.9Dim
131.9Dim
141.9Dim
151.9Dim
162.0Dim
172.0Dim
182.0Moderate
192.0Moderate
202.1Moderate
212.1Moderate
222.1Moderate
232.2Moderate
242.2Moderate
252.2Moderate
262.3Moderate
272.3Moderate
282.3Moderate
292.3Moderate
302.4Moderate
312.4Moderate
Planning a trip in January

Hazard calendar for Shirone

In seasonPeak

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

Shirone 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 Shirone?

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

0.2
Sightseeing
12th-best month of the year
0.0
Beach & pool
10th-best month of the year

January is a weaker month for outdoor sightseeing in Shirone.

What to pack for Shirone in January

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

In January, Shirone sees daytime highs around 6°C and nights near 1°C. Pack a warm layer and rain gear. Worth having: a heavy coat. About 25 days see rain.

a warm layerrain geara heavy coat

Sea temperature near Shirone 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 18 km away) is warmest in August at about 26°C and coldest in March near 10°C.

It's comfortable for a long swim from Jun 22 to Oct 30 — about 4.3 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb10Bracing
Mar10Bracing
Apr11Bracing
May15Bracing
Jun19Cool
Jul23Refreshing
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov18Cool
Dec15Cool

UV index in Shirone 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 Shirone peaks around August 11 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 11UV 10Dec 21UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar4Moderate
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug10Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Shirone 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 Shirone is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1723 µg/m³Dec 1610 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb15Moderate
Mar22Moderate
Apr23Moderate
May22Moderate
Jun19Moderate
Jul17Moderate
Aug14Moderate
Sep12Moderate
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Shirone?

Shirone sits at 37.8°N, 139.0°E, -1 m above sea level, in Japan. The nearest listed city is Niitsu-honchō, 10 km away.

Topography around Shirone

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

Within 3 km, the terrain around Shirone has only modest variations in elevation — a maximum elevation change of 12 m around an average of 1 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 451 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,075 m.

The land around Shirone is covered by cropland (70%) and artificial surfaces (22%) within 3 km, cropland (51%) and artificial surfaces (23%) within 16 km, and trees (49%) and water (39%) within 80 km.

3 km
12 m
16 km
451 m
80 km
2,075 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Niitsu-honchō 10 km · Kamo 11 km · Maki 12 km · Gosen 13 km · Tsubame 14 km · Kameda-honchō 14 km · Yoshida-kasugachō 15 km · Muramatsu 15 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 Shirone (37.7635°, 139.022°, elevation -1 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).