Ōuda-yamaguchi weather in December

In December, Ōuda-yamaguchi sees average daytime highs of 9°C and overnight lows near 1°C, with 74 mm of precipitation across 8.8 wet days and about 9.7 hours of daylight. It is the 10th-warmest and 12th-wettest month of the year here.

Highs ease over the month, from about 11°C in the first days to 7°C by the end. The sky is clear or mostly clear about 35% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 54 min at the start of December to 9 h 42 min by month's end. Set against the rest of the year, December is Ōuda-yamaguchi's 1st-clearest and 4th-windiest month. For the whole year in context, see Ōuda-yamaguchi's year-round climate.

Daytime high
10th warmest
Overnight low
3rd coldest
Precipitation
74 mm
8.8 wet days
Daylight
9 h 42 min
7:01 AM – 4:44 PM
Cloud cover
51%
1st clearest
Wind
10 km/h
4th windiest
Solar energy
2.48 kWh/m²
Travel score
1.8
out of 10

Ōuda-yamaguchi is city in Nara Prefecture, Japan.

Density
114/km²
people per km²
Founded
2006

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 11°C in the first days to 7°C by the end.

A typical December day in Ōuda-yamaguchi reaches about 9°C in the afternoon and slips back to 1°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 13°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)
1113
2112
3112
4112
5112
6102
7102
8102
9101
10101
1191
1291
1391
1491
1591
1691
1780
1880
1980
2080
2180
2280
2380
2480
2580
2670
2770
2870
2970
3070
317-1

How December really feels in Ōuda-yamaguchi

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 30 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
30
wind chill below the day's low

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

Ōuda-yamaguchi weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°749.34.4100.5
Feb / -1°829.73.710.70.9
Mar11° / 13413.62.211.72.6
Apr17° / 13911.60.312.85.0
May21° / 12°16612.2013.86.1
Jun25° / 17°25316014.35.5
Jul28° / 21°23218.2014.14.6
Aug30° / 22°17615.5013.34.5
Sep26° / 18°21915.1012.25.7
Oct20° / 12°20112011.16.1
Nov14° / 988.5010.24.5
Dec / 748.81.89.71.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in December, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 29% of December, 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 (%)
16040
26040
36040
46040
56040
66040
76139
86139
96139
106238
116238
126238
136238
146238
156238
166337
176337
186337
196337
206535
216535
226535
236634
246634
256733
266733
276832
286733
296832
306733
316733

Chance of precipitation in December

Any precipitationSnow

Ōuda-yamaguchi gets around 74 mm of rain and snow over 8.8 wet days in December, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 27% and peaks near 28% on the wettest days, and about 2 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1281
2282
3282
4282
5282
6272
7273
8273
9273
10273
11273
12274
13274
14274
15274
16275
17275
18275
19276
20276
21287
22288
23288
24289
25289
262810
272810
282810
292811
302711
312711

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
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 10 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 54 min at the start of December to 9 h 42 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 6:50 AM to 7:08 AM, and sunset from 4:42 PM to 4:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.96:504:42
29.86:514:42
39.86:524:42
49.86:534:42
59.86:534:42
69.86:544:42
79.86:554:42
89.86:564:42
99.86:564:42
109.76:574:42
119.76:584:42
129.76:594:42
139.76:594:43
149.77:004:43
159.77:014:43
169.77:014:44
179.77:024:44
189.77:024:44
199.77:034:45
209.77:034:45
219.77:044:45
229.77:044:46
239.77:054:46
249.77:054:47
259.77:064:47
269.77:064:48
279.77:064:49
289.77:074:49
299.77:074:50
309.77:074:50
319.77:084:51

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.48 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.48 kWh/m² to a high of 5.35 kWh/m² in May across the year — December's 2.48 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
202.5Moderate
212.5Moderate
222.5Moderate
232.5Moderate
242.5Moderate
252.5Moderate
262.6Moderate
272.6Moderate
282.6Moderate
292.6Moderate
302.6Moderate
312.6Moderate
Planning a trip in December

Hazard calendar for Ōuda-yamaguchi

In seasonPeak

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

Ōuda-yamaguchi 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 Ōuda-yamaguchi?

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

1.8
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 Ōuda-yamaguchi.

What to pack for Ōuda-yamaguchi in December

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

In December, Ōuda-yamaguchi sees daytime highs around 9°C and nights near 1°C. Pack a warm layer. Worth having: rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Ōuda-yamaguchi in December

The nearest coast averages about 19°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 54 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 21 to Nov 29 — 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
Apr18Cool
May20Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov21Refreshing
Dec19Cool

UV index in Ōuda-yamaguchi in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ōuda-yamaguchi peaks around June 20 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 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highModerateJun 20UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Extreme
Jul10Very high
Aug9Very high
Sep10Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Ōuda-yamaguchi 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 Ōuda-yamaguchi is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1423 µg/m³Oct 1713 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar22Moderate
Apr23Moderate
May22Moderate
Jun19Moderate
Jul17Moderate
Aug18Moderate
Sep14Moderate
Oct13Moderate
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Ōuda-yamaguchi?

Ōuda-yamaguchi sits at 34.5°N, 136.0°E, 398 m above sea level, in Japan. The nearest listed city is Haibara-akanedai, 8.0 km away.

Topography around Ōuda-yamaguchi

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

Within 3 km, the terrain around Ōuda-yamaguchi has only modest variations in elevation — a maximum elevation change of 245 m around an average of 409 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,367 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,882 m.

The land around Ōuda-yamaguchi is covered by trees (80%) within 3 km, trees (88%) within 16 km, and trees (62%) within 80 km.

3 km
245 m
16 km
1,367 m
80 km
1,882 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Haibara-akanedai 8.0 km · Sakurai 11 km · Kashihara-shi 16 km · Kashiwara 17 km · Shimobuchi 17 km · Tenri 18 km · Tawaramoto 18 km · Yamato-Takada 20 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 Ōuda-yamaguchi (34.4592°, 135.9536°, elevation 398 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).