Tsukumiura weather in January

In January, Tsukumiura sees average daytime highs of 11°C and overnight lows near 3°C, with 56 mm of precipitation across 5.4 wet days and about 10.1 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 34% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 54 min at the start of January to 10 h 24 min by month's end. Set against the rest of the year, January is Tsukumiura's 4th-clearest and 1st-windiest month. For the whole year in context, see Tsukumiura's year-round climate.

Daytime high
11°
12th warmest
Overnight low
1st coldest
Precipitation
56 mm
5.4 wet days
Daylight
10 hours
7:21 AM – 5:23 PM
Cloud cover
53%
4th clearest
Wind
11 km/h
1st windiest
Solar energy
2.72 kWh/m²
Travel score
2.9
out of 10

Tsukumiura is city in Ōita Prefecture, Japan.

Density
272/km²
people per km²
Founded
1951

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 11°C through the month.

A typical January day in Tsukumiura reaches about 11°C in the afternoon and slips back to 3°C overnight — a 8°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 about 1°C cooler than February.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1113
2113
3113
4113
5113
6113
7113
8113
9113
10113
11113
12113
13113
14113
15113
16103
17103
18103
19103
20103
21103
22103
23103
24103
25103
26103
27103
28103
29103
30113
31113

How January really feels in Tsukumiura

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 19 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
19
wind chill below the day's low

The story in January is cold — wind chill drags the overnight "feels like" below the raw low.

Tsukumiura 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
Jan11° / 565.40.410.12.9
Feb12° / 6470.610.83.3
Mar15° / 9710.2011.74.7
Apr20° / 11°11710.2012.86.2
May24° / 15°14110.9013.76.6
Jun27° / 20°29116.4014.15.2
Jul31° / 24°21716.40143.8
Aug31° / 24°20717.4013.23.6
Sep28° / 21°22914.6012.25.4
Oct23° / 15°1508.4011.27.2
Nov18° / 10°796.9010.36.2
Dec13° / 565.709.94.1

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 25% of January, with mostly cloudy or overcast conditions the remaining 41%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16832
26832
36832
46832
56733
66634
76535
86436
96238
106238
116139
125941
135941
145743
155644
165644
175545
185545
195446
205446
215446
225446
235545
245545
255644
265644
275644
285743
295842
305842
315941

Chance of precipitation in January

Any precipitationSnow

Tsukumiura gets around 56 mm of rain and snow over 5.4 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 18% and peaks near 20% on the wettest days, and about 0 day brings snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
1150
2150
3151
4151
5151
6151
7151
8161
9161
10161
11171
12171
13181
14181
15191
16191
17202
18202
19202
20202
21202
22202
23202
24202
25202
26202
27192
28192
29192
30192
31192

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 10 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
110calm
210calm
310calm
410calm
510calm
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 54 min at the start of January to 10 h 24 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 7:20 AM to 7:15 AM, and sunset from 5:11 PM to 5:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.97:205:11
29.97:205:12
39.97:215:13
49.97:215:13
59.97:215:14
69.97:215:15
79.97:215:16
89.97:215:16
99.97:215:17
109.97:215:18
1110.07:215:19
1210.07:215:20
1310.07:215:20
1410.07:215:21
1510.07:215:22
1610.07:215:23
1710.17:205:24
1810.17:205:25
1910.17:205:26
2010.17:205:27
2110.17:195:27
2210.27:195:28
2310.27:195:29
2410.27:185:30
2510.27:185:31
2610.27:185:32
2710.37:175:33
2810.37:175:34
2910.37:165:35
3010.37:165:36
3110.47:155:37

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.72 kWh/m².

For context, solar energy here swings from a low near 2.49 kWh/m² to a high of 5.5 kWh/m² in May across the year — January's 2.72 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.6Moderate
22.6Moderate
32.6Moderate
42.6Moderate
52.6Moderate
62.6Moderate
72.6Moderate
82.6Moderate
92.6Moderate
102.6Moderate
112.6Moderate
122.6Moderate
132.6Moderate
142.6Moderate
152.6Moderate
162.6Moderate
172.7Moderate
182.7Moderate
192.7Moderate
202.7Moderate
212.7Moderate
222.8Moderate
232.8Moderate
242.8Moderate
252.9Moderate
262.9Moderate
272.9Moderate
283.0Moderate
293.0Moderate
303.0Moderate
313.0Moderate
Planning a trip in January

Hazard calendar for Tsukumiura

In seasonPeak

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

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

Tsukumiura's rainy season runs May–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 Tsukumiura?

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

2.9
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 Tsukumiura.

What to pack for Tsukumiura in January

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

In January, Tsukumiura sees daytime highs around 11°C and nights near 3°C. Pack a warm layer. About 5 days see rain.

a warm layer

Sea temperature near Tsukumiura in January

The nearest coast averages about 17°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 24 km away) is warmest in August at about 27°C and coldest in February near 16°C.

It's comfortable for a long swim from May 25 to Dec 2 — about 6.3 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan17Cool
Feb16Cool
Mar16Cool
Apr17Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct24Refreshing
Nov21Refreshing
Dec19Cool

UV index in Tsukumiura 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 Tsukumiura peaks around June 21 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highVery highModerateJun 21UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7Very high
May8Very high
Jun10Extreme
Jul10Very high
Aug9Very high
Sep10Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Tsukumiura 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 Tsukumiura is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodGoodApr 1523 µg/m³Oct 1611 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar22Moderate
Apr23Moderate
May22Moderate
Jun19Moderate
Jul16Moderate
Aug16Moderate
Sep12Moderate
Oct11Good
Nov12Moderate
Dec12Good
Location & terrain

Where is Tsukumiura?

Tsukumiura sits at 33.1°N, 131.9°E, 13 m above sea level, in Japan. The nearest listed city is Usuki, 8.0 km away.

Topography around Tsukumiura

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

Within 3 km, the terrain around Tsukumiura has significant variations in elevation — a maximum elevation change of 369 m around an average of 70 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 716 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,758 m.

The land around Tsukumiura is covered by trees (58%) and water (26%) within 3 km, trees (52%) and water (42%) within 16 km, and water (50%) and trees (45%) within 80 km.

3 km
369 m
16 km
716 m
80 km
1,758 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Usuki 8.0 km · Saiki 14 km · Tsurusaki 25 km · Mie 29 km · Ōita 31 km · Beppu 41 km · Kitsuki 45 km · Takedamachi 45 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 Tsukumiura (33.0754°, 131.8691°, elevation 13 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).