Ushitsu weather in December

In December, Ushitsu sees average daytime highs of 10°C and overnight lows near 7°C, with 218 mm of precipitation across 23 wet days and about 9.5 hours of daylight. It is the 9th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 12°C in the first days to 8°C by the end. The sky is clear or mostly clear about 10% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 36 min at the start of December to 9 h 30 min by month's end. Set against the rest of the year, December is Ushitsu's 11th-clearest and 2nd-windiest month. For the whole year in context, see Ushitsu's year-round climate.

Daytime high
10°
9th warmest
Overnight low
4th coldest
Precipitation
218 mm
23 wet days
Daylight
9 h 24 min
7:04 AM – 4:31 PM
Cloud cover
68%
11th clearest
Wind
23 km/h
2nd windiest
Solar energy
1.8 kWh/m²
Travel score
1.5
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 12°C in the first days to 8°C by the end.

A typical December day in Ushitsu reaches about 10°C in the afternoon and slips back to 7°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 6°C and 13°C. Set against its neighbours, December runs about 5°C cooler than November and about 3°C warmer than January.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1129
2129
3128
4118
5118
6118
7118
8118
9117
10107
11107
12107
13107
14107
15107
16106
1796
1896
1996
2096
2196
2296
2396
2496
2596
2685
2785
2885
2985
3085
3185

How December really feels in Ushitsu

Once humidity and wind are folded in, December 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

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

Ushitsu weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 18623.28.49.70.5
Feb / 12317.96.810.60.6
Mar / 133162.311.71.6
Apr13° / 10°11912.40.112.93.4
May17° / 14°12311.60145.5
Jun21° / 19°15311.2014.56.1
Jul26° / 23°23314.4014.35.9
Aug28° / 25°15812013.46.1
Sep25° / 22°20213.8012.36.1
Oct20° / 17°16914.20115.7
Nov15° / 12°18518.10103.6
Dec10° / 218233.89.51.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 26% of December, with mostly cloudy or overcast conditions the remaining 64%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
23961
33862
43961
53862
63763
73763
83763
93664
103664
113565
123466
133565
143466
153466
163565
173565
183664
193664
203763
213763
223664
233664
243664
253664
263664
273664
283763
293763
303664
313664

Chance of precipitation in December

Any precipitationSnow

Ushitsu gets around 218 mm of rain and snow over 23 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 74% and peaks near 76% on the wettest days, and about 4 days bring snow.

0%20%40%60%80%151015202531
Rain chance (%)Snow chance (%)
1713
2723
3724
4734
5745
6746
7746
8757
9758
10758
11759
127510
137510
147511
157511
167512
177413
187413
197414
207415
217415
227416
237417
247417
257518
267518
277519
287619
297620
307620
317621

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December 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 (%)Comfortable (%)
1991
2991
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in December

Winds average 23 km/h in December.

Across December, daily wind ranges from about 22 km/h on the calmest days to 24 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
122breezy
222breezy
322breezy
422breezy
522breezy
623breezy
723breezy
823breezy
923breezy
1023breezy
1123breezy
1223breezy
1323breezy
1423breezy
1523breezy
1623breezy
1723breezy
1823breezy
1924breezy
2024breezy
2124breezy
2224breezy
2324breezy
2424breezy
2524breezy
2624breezy
2724breezy
2824breezy
2924breezy
3024breezy
3124breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 36 min at the start of December to 9 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 6:53 AM to 7:11 AM, and sunset from 4:30 PM to 4:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.66:534:30
29.66:534:30
39.66:544:29
49.66:554:29
59.66:564:29
69.56:574:29
79.56:584:29
89.56:594:29
99.56:594:29
109.57:004:30
119.57:014:30
129.57:024:30
139.57:024:30
149.57:034:30
159.47:044:31
169.47:044:31
179.47:054:31
189.47:054:32
199.47:064:32
209.47:074:32
219.47:074:33
229.47:084:33
239.47:084:34
249.47:084:34
259.47:094:35
269.47:094:35
279.47:104:36
289.47:104:36
299.47:104:37
309.57:104:38
319.57:114:38

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.8 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.8 kWh/m² to a high of 5.83 kWh/m² in May across the year — December's 1.8 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.9Dim
21.9Dim
31.9Dim
41.9Dim
51.9Dim
61.8Dim
71.8Dim
81.8Dim
91.8Dim
101.8Dim
111.8Dim
121.8Dim
131.8Dim
141.8Dim
151.8Dim
161.8Dim
171.8Dim
181.8Dim
191.8Dim
201.8Dim
211.8Dim
221.8Dim
231.8Dim
241.8Dim
251.8Dim
261.8Dim
271.9Dim
281.9Dim
291.9Dim
301.9Dim
311.9Dim
Planning a trip in December

Hazard calendar for Ushitsu

In seasonPeak

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

Ushitsu 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 December a good time to visit Ushitsu?

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

1.5
Sightseeing
10th-best month of the year
0.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Ushitsu.

What to pack for Ushitsu in December

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

In December, Ushitsu sees daytime highs around 10°C and nights near 7°C. Pack a warm layer and rain gear. Worth having: a windbreaker. About 23 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Ushitsu in December

The nearest coast averages about 16°C in December — 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 27°C and coldest in March near 10°C.

It's comfortable for a long swim from Jun 20 to Nov 1 — about 4.4 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar10Bracing
Apr11Bracing
May15Cool
Jun20Cool
Jul23Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Ushitsu in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ushitsu peaks around August 15 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 15UV 10Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug10Very high
Sep9Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Ushitsu in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Ushitsu is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (September, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1020 µg/m³Sep 219 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr20Moderate
May18Moderate
Jun14Moderate
Jul12Good
Aug10Good
Sep9Good
Oct9Good
Nov10Good
Dec10Good
Location & terrain

Where is Ushitsu?

Ushitsu sits at 37.3°N, 137.2°E, 1 m above sea level, in Japan. The nearest listed city is Anamizu, 24 km away.

Topography around Ushitsu

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

Within 3 km, the terrain around Ushitsu has only modest variations in elevation — a maximum elevation change of 205 m around an average of 79 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 467 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,831 m.

The land around Ushitsu is covered by trees (66%) and water (29%) within 3 km, trees (51%) and water (45%) within 16 km, and water (71%) and trees (22%) within 80 km.

3 km
205 m
16 km
467 m
80 km
2,831 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Anamizu 24 km · Wajima 25 km · Nanao 33 km · Hitoto 42 km · Oshima 49 km · Nyūzen 51 km · Himimachi 52 km · Kurobe-shi 52 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 Ushitsu (37.3079°, 137.1522°, elevation 1 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).