Wadayama weather in January

In January, Wadayama sees average daytime highs of 6°C and overnight lows near -2°C, with 75 mm of precipitation across 14.1 wet days and about 9.9 hours of daylight. It is the 12th-warmest and 12th-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 10% 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 Wadayama's 5th-clearest and 5th-windiest month. For the whole year in context, see Wadayama's year-round climate.

Daytime high
12th warmest
Overnight low
-2°
1st coldest
Precipitation
75 mm
14.1 wet days
Daylight
9 h 54 min
7:14 AM – 5:06 PM
Cloud cover
67%
5th clearest
Wind
9 km/h
5th windiest
Solar energy
2.48 kWh/m²
Travel score
0.2
out of 10

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 Wadayama reaches about 6°C in the afternoon and slips back to -2°C overnight — a 8°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 about 1°C cooler than February.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
16-1
26-1
36-1
46-1
56-1
66-1
76-1
86-1
96-1
106-2
116-2
126-2
136-2
146-2
156-2
166-2
175-2
185-2
195-2
205-2
215-2
225-2
235-2
245-2
255-2
265-2
275-2
285-2
295-2
305-2
315-2

How January really feels in Wadayama

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.

Wadayama weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°7514.110.19.90.2
Feb / -2°8113.17.910.70.6
Mar11° / 13214.43.911.72.3
Apr17° / 13911.90.412.94.9
May21° / 12°16812.4013.86.1
Jun24° / 17°22215.9014.35.5
Jul28° / 21°27218.9014.14.5
Aug29° / 22°19317.3013.34.4
Sep25° / 18°25515.3012.25.7
Oct20° / 12°15710.9011.16.0
Nov14° / 8910.20.210.14.1
Dec / 8112.24.89.71.5

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% 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 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24654
34555
44654
54555
64555
74456
84357
94357
104357
114258
124258
134258
144060
154060
163961
173961
183961
193961
203862
213862
223862
233862
243862
253862
263862
273862
283961
293961
303961
313862

Chance of precipitation in January

Any precipitationSnow

Wadayama gets around 75 mm of rain and snow over 14.1 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 45% and peaks near 46% on the wettest days, and about 10 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14328
24428
34429
44429
54430
64430
74531
84531
94531
104531
114531
124631
134631
144631
154631
164631
174631
184632
194632
204632
214632
224633
234633
244633
254634
264634
274634
284634
294534
304534
314535

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 9 km/h in January.

Across January, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 7:14 AM to 7:07 AM, and sunset from 4:53 PM to 5:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.77:144:53
29.77:144:54
39.77:144:55
49.77:154:56
59.77:154:56
69.77:154:57
79.77:154:58
89.77:154:59
99.77:155:00
109.87:155:00
119.87:155:01
129.87:155:02
139.87:155:03
149.87:145:04
159.87:145:05
169.97:145:06
179.97:145:07
189.97:135:08
199.97:135:08
209.97:135:09
2110.07:125:10
2210.07:125:11
2310.07:125:12
2410.07:115:13
2510.17:115:14
2610.17:105:15
2710.17:105:16
2810.17:095:17
2910.27:095:18
3010.27:085:19
3110.27:075:20

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.48 kWh/m².

For context, solar energy here swings from a low near 2.16 kWh/m² to a high of 5.49 kWh/m² in May across the year — January's 2.48 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.3Moderate
22.3Moderate
32.3Moderate
42.3Moderate
52.3Moderate
62.3Moderate
72.3Moderate
82.3Moderate
92.4Moderate
102.4Moderate
112.4Moderate
122.4Moderate
132.4Moderate
142.4Moderate
152.4Moderate
162.4Moderate
172.4Moderate
182.5Moderate
192.5Moderate
202.5Moderate
212.5Moderate
222.5Moderate
232.6Moderate
242.6Moderate
252.6Moderate
262.7Moderate
272.7Moderate
282.7Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in January

Hazard calendar for Wadayama

In seasonPeak

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

Wadayama sits in the Pacific typhoon belt; the season peaks July–October.

Wadayama's rainy season runs March–October, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Wadayama?

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 Wadayama.

What to pack for Wadayama in January

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

In January, Wadayama sees daytime highs around 6°C and nights near -2°C. Pack a warm layer and rain gear. Worth having: a heavy coat. About 14 days see rain.

a warm layerrain geara heavy coat

Sea temperature near Wadayama in January

The nearest coast averages about 14°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 34 km away) is warmest in August at about 27°C and coldest in March near 12°C.

It's comfortable for a long swim from Jun 13 to Nov 7 — about 4.9 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb12Bracing
Mar12Bracing
Apr14Bracing
May17Cool
Jun20Refreshing
Jul24Warm
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Wadayama 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 Wadayama peaks around July 15 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highModerateJul 15UV 10Jan 1UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7High
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Wadayama 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 Wadayama is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1622 µg/m³Oct 1811 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar21Moderate
Apr22Moderate
May21Moderate
Jun18Moderate
Jul17Moderate
Aug17Moderate
Sep13Moderate
Oct11Good
Nov12Moderate
Dec12Good
Location & terrain

Where is Wadayama?

Wadayama sits at 35.3°N, 134.9°E, 180 m above sea level, in Japan. The nearest listed city is Yabu, 13 km away.

Topography around Wadayama

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

Within 3 km, the terrain around Wadayama has significant variations in elevation — a maximum elevation change of 435 m around an average of 174 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,039 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,487 m.

The land around Wadayama is covered by trees (69%) within 3 km, trees (92%) within 16 km, and trees (61%) and water (29%) within 80 km.

3 km
435 m
16 km
1,039 m
80 km
1,487 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Yabu 13 km · Tamba 22 km · Fukuchiyama 23 km · Tanba 23 km · Toyooka 25 km · Kajiya 28 km · Yotsutsuji 32 km · Ayabe 35 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 Wadayama (35.3167°, 134.8667°, elevation 180 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).