Tosayamadachō-nakano weather in January

In January, Tosayamadachō-nakano sees average daytime highs of 11°C and overnight lows near 5°C, with 63 mm of precipitation across 6 wet days and about 10 hours of daylight. It is the 12th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 11°C through the month. The sky is clear or mostly clear about 40% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 48 min at the start of January to 10 h 18 min by month's end. Set against the rest of the year, January is Tosayamadachō-nakano's 4th-clearest and 1st-windiest month. For the whole year in context, see Tosayamadachō-nakano's year-round climate.

Daytime high
11°
12th warmest
Overnight low
1st coldest
Precipitation
63 mm
6 wet days
Daylight
10 hours
7:15 AM – 5:14 PM
Cloud cover
50%
4th clearest
Wind
11 km/h
1st windiest
Solar energy
2.89 kWh/m²
Travel score
2.8
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 11°C through the month.

A typical January day in Tosayamadachō-nakano reaches about 11°C in the afternoon and slips back to 5°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 14°C. Set against its neighbours, January runs about 2°C cooler than December and on par with February.

10°15°151015202531
Avg high (°C)Avg low (°C)
1116
2115
3115
4115
5115
6115
7115
8115
9115
10115
11115
12115
13115
14115
15115
16115
17105
18105
19105
20105
21105
22104
23104
24104
25104
26104
27104
28104
29104
30104
31104

How January really feels in Tosayamadachō-nakano

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 0 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
0
wind chill below the day's low

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Tosayamadachō-nakano 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 daysDaylight (hours)Travel score
Jan11° / 636102.8
Feb11° / 857.410.83.1
Mar14° / 14310.511.74.3
Apr19° / 12°17410.412.85.9
May22° / 16°20011.513.76.4
Jun25° / 21°32117.114.25.4
Jul28° / 24°32618.7144.6
Aug29° / 25°21818.313.24.4
Sep27° / 22°24715.212.25.6
Oct23° / 17°1839.911.27.0
Nov18° / 12°987.510.36.2
Dec13° / 755.79.84.1

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 23% of January, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17228
27228
37228
47129
57129
67030
76931
86832
96733
106535
116535
126436
136238
146238
156139
166040
175941
185842
195842
205842
215743
225743
235743
245743
255743
265842
275842
285842
295941
305941
315941

Chance of precipitation in January

Any precipitation

Tosayamadachō-nakano gets around 63 mm of rain and snow over 6 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 20% and peaks near 24% on the wettest days, and about 0 day brings snow. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
114
214
314
414
515
615
715
816
917
1018
1119
1219
1320
1421
1522
1622
1723
1823
1923
2024
2124
2224
2323
2423
2523
2623
2722
2822
2922
3021
3121

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

Across January, daily wind ranges from about 11 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
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 48 min at the start of January to 10 h 18 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 7:09 AM, and sunset from 5:03 PM to 5:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.87:145:03
29.87:145:03
39.87:155:04
49.87:155:05
59.87:155:05
69.97:155:06
79.97:155:07
89.97:155:08
99.97:155:09
109.97:155:09
119.97:155:10
129.97:155:11
139.97:155:12
1410.07:155:13
1510.07:155:14
1610.07:155:14
1710.07:145:15
1810.07:145:16
1910.17:145:17
2010.17:145:18
2110.17:135:19
2210.17:135:20
2310.17:135:21
2410.27:125:22
2510.27:125:23
2610.27:115:24
2710.27:115:25
2810.37:105:26
2910.37:105:27
3010.37:095:27
3110.37:095:28

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.89 kWh/m².

For context, solar energy here swings from a low near 2.61 kWh/m² to a high of 5.61 kWh/m² in May across the year — January's 2.89 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.8Moderate
22.8Moderate
32.8Moderate
42.8Moderate
52.8Moderate
62.8Moderate
72.8Moderate
82.8Moderate
92.8Moderate
102.8Moderate
112.8Moderate
122.8Moderate
132.8Moderate
142.8Moderate
152.8Moderate
162.8Moderate
172.8Moderate
182.9Moderate
192.9Moderate
202.9Moderate
212.9Moderate
222.9Moderate
233.0Moderate
243.0Moderate
253.0Moderate
263.0Moderate
273.1Moderate
283.1Moderate
293.1Moderate
303.2Moderate
313.2Moderate
Planning a trip in January

Hazard calendar for Tosayamadachō-nakano

In seasonPeak

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

Tosayamadachō-nakano sits in the Pacific typhoon belt; the season peaks July–October.

Tosayamadachō-nakano's rainy season runs April–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 Tosayamadachō-nakano?

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

2.8
Sightseeing
12th-best month of the year
0.0
Beach & pool
11th-best month of the year

January is a weaker month for outdoor sightseeing in Tosayamadachō-nakano.

What to pack for Tosayamadachō-nakano in January

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

In January, Tosayamadachō-nakano sees daytime highs around 11°C and nights near 5°C. Pack a warm layer. About 6 days see rain.

a warm layer

Sea temperature near Tosayamadachō-nakano in January

The nearest coast averages about 18°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 26 km away) is warmest in August at about 28°C and coldest in February near 17°C.

It's comfortable for a long swim from May 6 to Dec 16 — about 7.4 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan18Cool
Feb17Cool
Mar17Cool
Apr19Cool
May21Refreshing
Jun23Refreshing
Jul26Warm
Aug28Warm
Sep27Warm
Oct25Warm
Nov23Refreshing
Dec20Refreshing

UV index in Tosayamadachō-nakano in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tosayamadachō-nakano peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJun 23UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Tosayamadachō-nakano 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 Tosayamadachō-nakano is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1321 µg/m³Oct 1311 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar20Moderate
Apr22Moderate
May19Moderate
Jun16Moderate
Jul13Moderate
Aug12Moderate
Sep11Good
Oct11Good
Nov12Good
Dec11Good
Location & terrain

Where is Tosayamadachō-nakano?

Tosayamadachō-nakano sits at 33.6°N, 133.7°E, 41 m above sea level, in Japan. The nearest listed city is Yamashita, 4.0 km away.

Topography around Tosayamadachō-nakano

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

Within 3 km, the terrain around Tosayamadachō-nakano has only modest variations in elevation — a maximum elevation change of 197 m around an average of 44 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,226 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,939 m.

The land around Tosayamadachō-nakano is covered by cropland (39%), artificial surfaces (29%) and trees (23%) within 3 km, trees (61%) and water (20%) within 16 km, and trees (56%) and water (38%) within 80 km.

3 km
197 m
16 km
1,226 m
80 km
1,939 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Yamashita 4.0 km · Nankoku 5.0 km · Kochi 15 km · Aki 23 km · Ino 24 km · Tosa 25 km · Susaki 43 km · Shikokuchūō 44 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 Tosayamadachō-nakano (33.6°, 133.6833°, elevation 41 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).