Yotsutsuji weather in December

In December, Yotsutsuji sees average daytime highs of 10°C and overnight lows near 3°C, with 95 mm of precipitation across 15.8 wet days and about 9.6 hours of daylight. It is the 10th-warmest and 10th-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 14% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 48 min at the start of December to 9 h 36 min by month's end. Set against the rest of the year, December is Yotsutsuji's 4th-clearest and 4th-windiest month. For the whole year in context, see Yotsutsuji's year-round climate.

Daytime high
10°
10th warmest
Overnight low
4th coldest
Precipitation
95 mm
15.8 wet days
Daylight
9 h 36 min
7:07 AM – 4:44 PM
Cloud cover
63%
4th clearest
Wind
10 km/h
4th windiest
Solar energy
2.08 kWh/m²
Travel score
2.0
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 Yotsutsuji reaches about 10°C in the afternoon and slips back to 3°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 6°C and 14°C. Set against its neighbours, December runs about 6°C cooler than November and about 3°C warmer than January.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1135
2125
3125
4125
5125
6125
7114
8114
9114
10114
11114
12104
13104
14103
15103
16103
17103
18103
1993
2093
2193
2293
2393
2492
2592
2692
2792
2892
2982
3082
3182

How December really feels in Yotsutsuji

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 13 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
13
wind chill below the day's low

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

Yotsutsuji weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 9518.27.89.90.8
Feb / 8414.76.710.71.2
Mar12° / 12514.92.111.72.8
Apr18° / 11911.9012.95.3
May22° / 13°15711.9013.86.4
Jun25° / 18°19514.2014.45.7
Jul29° / 23°23917.5014.24.3
Aug31° / 24°17714.1013.34.1
Sep26° / 20°22014.5012.25.7
Oct21° / 14°14610.8011.16.4
Nov16° / 9312.2010.14.6
Dec10° / 9515.82.99.62.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 33% of December, with mostly cloudy or overcast conditions the remaining 53%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24753
34654
44654
54654
64654
74654
84654
94753
104654
114753
124753
134753
144753
154654
164654
174753
184852
194852
204951
214852
224852
234852
244852
254852
264852
274852
284753
294753
304753
314753

Chance of precipitation in December

Any precipitationSnow

Yotsutsuji gets around 95 mm of rain and snow over 15.8 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 52% and peaks near 57% on the wettest days, and about 3 days bring snow. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1451
2461
3462
4472
5473
6483
7484
8495
9495
10506
11507
12517
13518
14528
15529
165210
175210
185311
195312
205312
215313
225313
235314
245414
255415
265515
275516
285616
295617
305718
315718

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
3991
4991
5991
6991
7991
8991
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 10 km/h in December.

Across December, 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
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 48 min at the start of December to 9 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 6:56 AM to 7:14 AM, and sunset from 4:43 PM to 4:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.86:564:43
29.86:574:42
39.76:584:42
49.76:594:42
59.77:004:42
69.77:004:42
79.77:014:42
89.77:024:42
99.77:034:43
109.77:034:43
119.67:044:43
129.67:054:43
139.67:064:43
149.67:064:43
159.67:074:44
169.67:074:44
179.67:084:44
189.67:094:45
199.67:094:45
209.67:104:46
219.67:104:46
229.67:114:46
239.67:114:47
249.67:124:47
259.67:124:48
269.67:124:48
279.67:134:49
289.67:134:50
299.67:134:50
309.67:144:51
319.67:144:52

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.08 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.08 kWh/m² to a high of 5.45 kWh/m² in May across the year — December's 2.08 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.1Moderate
22.1Moderate
32.1Moderate
42.1Moderate
52.1Moderate
62.1Moderate
72.1Moderate
82.1Moderate
92.1Moderate
102.1Moderate
112.1Moderate
122.1Moderate
132.1Moderate
142.1Moderate
152.1Moderate
162.1Moderate
172.1Moderate
182.1Moderate
192.1Moderate
202.1Moderate
212.1Moderate
222.1Moderate
232.1Moderate
242.1Moderate
252.2Moderate
262.2Moderate
272.2Moderate
282.2Moderate
292.2Moderate
302.2Moderate
312.2Moderate
Planning a trip in December

Hazard calendar for Yotsutsuji

In seasonPeak

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

Yotsutsuji 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 Yotsutsuji?

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

2.0
Sightseeing
10th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Yotsutsuji.

What to pack for Yotsutsuji in December

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

In December, Yotsutsuji sees daytime highs around 10°C and nights near 3°C. Pack a warm layer and rain gear. About 16 days see rain.

a warm layerrain gear

Sea temperature near Yotsutsuji 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 at the nearest coast (about 23 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 Yotsutsuji 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 Yotsutsuji peaks around July 17 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highModerateJul 17UV 10Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul10Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Yotsutsuji 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 Yotsutsuji 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 Yotsutsuji?

Yotsutsuji sits at 35.5°N, 135.1°E, 34 m above sea level, in Japan. The nearest listed city is Miyazu, 9.0 km away.

Topography around Yotsutsuji

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

Within 3 km, the terrain around Yotsutsuji has significant variations in elevation — a maximum elevation change of 333 m around an average of 85 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 831 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,487 m.

The land around Yotsutsuji is covered by trees (70%) within 3 km, trees (86%) within 16 km, and trees (58%) and water (35%) within 80 km.

3 km
333 m
16 km
831 m
80 km
1,487 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Miyazu 9.0 km · Kyōtango 10 km · Maizuru 23 km · Toyooka 25 km · Fukuchiyama 26 km · Ayabe 29 km · Wadayama 32 km · Yabu 33 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 Yotsutsuji (35.5333°, 135.1°, elevation 34 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).