Uki weather in January

In January, Uki sees average daytime highs of 8°C and overnight lows near 2°C, with 82 mm of precipitation across 10.5 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 8°C through the month. The sky is clear or mostly clear about 22% 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 Uki's 5th-clearest and 3rd-windiest month. For the whole year in context, see Uki's year-round climate.

Daytime high
12th warmest
Overnight low
1st coldest
Precipitation
82 mm
10.5 wet days
Daylight
10 h 06 min
7:24 AM – 5:29 PM
Cloud cover
61%
5th clearest
Wind
8 km/h
3rd windiest
Solar energy
2.57 kWh/m²
Travel score
1.3
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 8°C through the month.

A typical January day in Uki reaches about 8°C in the afternoon and slips back to 2°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 12°C. Set against its neighbours, January runs about 2°C cooler than December and about 2°C cooler than February.

-5°10°15°151015202531
Avg high (°C)Avg low (°C)
192
292
392
482
582
682
782
882
982
1082
1182
1282
1382
1482
1582
1682
1782
1882
1981
2081
2181
2281
2381
2481
2581
2681
2781
2881
2981
3081
3181

How January really feels in Uki

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.

Uki 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 / 8210.53.210.11.3
Feb / 10210.52.210.81.9
Mar13° / 15113.60.611.83.4
Apr18° / 10°17012.3012.85.3
May22° / 15°19312.5013.76.1
Jun24° / 19°46419.1014.15.1
Jul28° / 23°35819.8013.94.5
Aug29° / 23°17116.9013.24.5
Sep26° / 20°18314.3012.25.9
Oct22° / 14°1089011.26.9
Nov16° / 988.8010.35.2
Dec10° / 86101.49.92.5

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 20% of January, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
24951
34951
44753
54654
64555
74456
84357
94258
104258
114060
124060
133961
143862
153862
163862
173862
183862
193862
203961
213961
223961
234159
244159
254159
264258
274258
284456
294456
304555
314555

Chance of precipitation in January

Any precipitationSnow

Uki gets around 82 mm of rain and snow over 10.5 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 34% and peaks near 37% on the wettest days, and about 3 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1319
23110
33110
43110
5319
6319
7319
8319
9329
10329
11329
12339
13349
143410
153510
163510
173611
183611
193611
203711
213712
223712
233712
243712
253712
263712
273612
283612
293612
303512
313511

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 8 km/h in January.

Across January, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

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 7:24 AM to 7:19 AM, and sunset from 5:17 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.97:245:17
29.97:245:18
39.97:245:19
49.97:245:19
59.97:255:20
69.97:255:21
79.97:255:21
810.07:255:22
910.07:255:23
1010.07:255:24
1110.07:255:25
1210.07:255:25
1310.07:255:26
1410.07:255:27
1510.17:255:28
1610.17:245:29
1710.17:245:30
1810.17:245:31
1910.17:245:31
2010.17:245:32
2110.27:235:33
2210.27:235:34
2310.27:235:35
2410.27:225:36
2510.27:225:37
2610.37:215:38
2710.37:215:39
2810.37:215:40
2910.37:205:41
3010.47:205:41
3110.47:195:42

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.57 kWh/m².

For context, solar energy here swings from a low near 2.37 kWh/m² to a high of 5.09 kWh/m² in May across the year — January's 2.57 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.5Moderate
22.5Moderate
32.5Moderate
42.5Moderate
52.5Moderate
62.5Moderate
72.5Moderate
82.5Moderate
92.5Moderate
102.5Moderate
112.5Moderate
122.5Moderate
132.5Moderate
142.5Moderate
152.5Moderate
162.5Moderate
172.5Moderate
182.5Moderate
192.5Moderate
202.6Moderate
212.6Moderate
222.6Moderate
232.6Moderate
242.7Moderate
252.7Moderate
262.7Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.9Moderate
312.9Moderate
Planning a trip in January

Hazard calendar for Uki

In seasonPeak

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

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

Uki's rainy season runs June–July, 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 Uki?

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

1.3
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 Uki.

What to pack for Uki in January

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

In January, Uki sees daytime highs around 8°C and nights near 2°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 11 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Uki in January

The nearest coast averages about 15°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 27 km away) is warmest in August at about 27°C and coldest in February near 14°C.

It's comfortable for a long swim from May 26 to Nov 19 — about 5.9 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb14Bracing
Mar15Bracing
Apr17Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Refreshing
Dec18Cool

UV index in Uki 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 Uki peaks around June 22 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 — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJun 22UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Uki 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 Uki is worst in March — around 24 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2424 µg/m³Jul 2114 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar24Moderate
Apr24Moderate
May22Moderate
Jun18Moderate
Jul13Moderate
Aug14Moderate
Sep14Moderate
Oct14Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Uki?

Uki sits at 32.6°N, 130.7°E, 0 m above sea level, in Japan. The nearest listed city is Matsubase, 3.0 km away.

Topography around Uki

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

Within 3 km, the terrain around Uki has only modest variations in elevation — a maximum elevation change of 98 m around an average of 3 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 861 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,757 m.

The land around Uki is covered by cropland (54%) within 3 km, trees (42%), cropland (22%) and water (20%) within 16 km, and trees (65%) and water (21%) within 80 km.

3 km
98 m
16 km
861 m
80 km
1,757 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Matsubase 3.0 km · Uto 7.0 km · Honmachi 14 km · Mifune 18 km · Kotō 19 km · Shimada 19 km · Kumamoto 21 km · Ōyanomachi-noboritate 22 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 Uki (32.6222°, 130.6618°, 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).