Hakone weather in January

In January, Hakone sees average daytime highs of 7°C and overnight lows near 0°C, with 94 mm of precipitation across 9.7 wet days and about 9.9 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 7°C through the month. The sky is clear or mostly clear about 49% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 42 min at the start of January to 10 h 12 min by month's end. Set against the rest of the year, January is Hakone's 1st-clearest and 8th-windiest month. For the whole year in context, see Hakone's year-round climate.

Daytime high
12th warmest
Overnight low
2nd coldest
Precipitation
94 mm
9.7 wet days
Daylight
9 h 54 min
6:57 AM – 4:49 PM
Cloud cover
45%
1st clearest
Wind
6 km/h
8th windiest
Solar energy
2.83 kWh/m²
Travel score
1.1
out of 10

Hakone is town in Ashigarashimo district, Kanagawa prefecture, Japan.

Density
122/km²
people per km²
Founded
1956

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 7°C through the month.

A typical January day in Hakone reaches about 7°C in the afternoon and slips back to 0°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 11°C. Set against its neighbours, January runs about 3°C cooler than December and on par with February.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
181
281
381
481
581
681
781
881
981
1071
1170
1270
1370
1470
1570
1670
1770
1870
1970
2070
2170
2270
2370
247-1
257-1
267-1
277-1
287-1
297-1
307-1
317-1

How January really feels in Hakone

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.

Hakone 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 / 949.74.69.91.1
Feb / 10610.9510.71.2
Mar11° / 18015.63.411.72.5
Apr16° / 18114.40.512.94.5
May21° / 13°19114.4013.85.6
Jun23° / 17°23518014.35.1
Jul28° / 21°23517.9014.14.9
Aug29° / 22°18416.5013.34.8
Sep25° / 19°26016.7012.25.5
Oct20° / 13°25115.5011.15.4
Nov15° / 13112.4010.14.1
Dec10° / 8810.219.72.3

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in January, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 38%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17228
27228
37228
47228
57228
67129
77030
86931
96832
106634
116535
126436
136238
146040
155941
165842
175842
185644
195644
205644
215644
225644
235644
245743
255743
265842
275842
285842
295941
305941
315941

Chance of precipitation in January

Any precipitationSnow

Hakone gets around 94 mm of rain and snow over 9.7 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 32% and peaks near 38% on the wettest days, and about 5 days bring snow. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1256
2247
3257
4258
5258
6259
72610
82711
92812
102913
113014
123114
133315
143416
153517
163517
173618
183718
193719
203719
213819
223819
233719
243719
253719
263619
273619
283519
293419
303418
313318

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 6 km/h in January.

Across January, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 42 min at the start of January to 10 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over January. Sunrise moves from 6:57 AM to 6:51 AM, and sunset from 4:37 PM to 5:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.76:574:37
29.76:574:38
39.76:574:38
49.76:584:39
59.76:584:40
69.76:584:41
79.76:584:42
89.76:584:42
99.86:584:43
109.86:584:44
119.86:584:45
129.86:584:46
139.86:584:47
149.86:574:48
159.96:574:48
169.96:574:49
179.96:574:50
189.96:574:51
199.96:564:52
2010.06:564:53
2110.06:564:54
2210.06:554:55
2310.06:554:56
2410.06:544:57
2510.16:544:58
2610.16:534:59
2710.16:535:00
2810.16:525:01
2910.26:525:02
3010.26:515:03
3110.26:515:04

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.83 kWh/m².

For context, solar energy here swings from a low near 2.42 kWh/m² to a high of 5.27 kWh/m² in May across the year — January's 2.83 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.7Moderate
22.7Moderate
32.7Moderate
42.7Moderate
52.7Moderate
62.7Moderate
72.7Moderate
82.7Moderate
92.7Moderate
102.7Moderate
112.7Moderate
122.7Moderate
132.7Moderate
142.7Moderate
152.7Moderate
162.7Moderate
172.7Moderate
182.7Moderate
192.8Moderate
202.8Moderate
212.8Moderate
222.8Moderate
232.9Moderate
242.9Moderate
252.9Moderate
263.0Moderate
273.0Moderate
283.0Moderate
293.1Moderate
303.1Moderate
313.1Moderate
Planning a trip in January

Hazard calendar for Hakone

In seasonPeak

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

Hakone 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 Hakone?

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

1.1
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 Hakone.

What to pack for Hakone in January

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

In January, Hakone sees daytime highs around 7°C and nights near 0°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Hakone in January

The nearest coast averages about 16°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 26°C and coldest in February near 15°C.

It's comfortable for a long swim from May 31 to Nov 26 — about 5.9 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Cool
Mar16Cool
Apr17Cool
May19Cool
Jun21Refreshing
Jul24Refreshing
Aug26Warm
Sep25Warm
Oct23Refreshing
Nov21Refreshing
Dec18Cool

UV index in Hakone in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hakone peaks around July 20 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 20UV 10Dec 23UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May9Very high
Jun9Very high
Jul10Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Hakone 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 Hakone is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1623 µg/m³Dec 1610 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb20Moderate
Mar20Moderate
Apr23Moderate
May20Moderate
Jun17Moderate
Jul13Moderate
Aug12Good
Sep12Good
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Hakone?

Hakone sits at 35.2°N, 139.0°E, 0 m above sea level, in Japan. The nearest listed city is Yugawara, 6.0 km away.

Topography around Hakone

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

Within 3 km, the terrain around Hakone has large variations in elevation — a maximum elevation change of 627 m around an average of 811 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,429 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,736 m.

The land around Hakone is covered by trees (81%) within 3 km, trees (63%) within 16 km, and trees (44%) and water (40%) within 80 km.

3 km
627 m
16 km
1,429 m
80 km
3,736 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Yugawara 6.0 km · Susono 11 km · Atami 12 km · Kamizawa 12 km · Nakatogari 13 km · Mishima 13 km · Odawara 14 km · Fushimi 14 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 Hakone (35.1895°, 139.0265°, elevation 0 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).