Asakuchi weather in December

In December, Asakuchi sees average daytime highs of 12°C and overnight lows near 6°C, with 48 mm of rain across 5.5 wet days and about 9.7 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 14°C in the first days to 11°C by the end. The sky is clear or mostly clear about 39% 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 Asakuchi's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Asakuchi's year-round climate.

Daytime high
12°
10th warmest
Overnight low
3rd coldest
Rainfall
48 mm
5.5 wet days
Daylight
9 h 42 min
7:11 AM – 4:53 PM
Cloud cover
50%
2nd clearest
Wind
13 km/h
2nd windiest
Solar energy
2.32 kWh/m²
Travel score
3.7
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 14°C in the first days to 11°C by the end.

A typical December day in Asakuchi reaches about 12°C in the afternoon and slips back to 6°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 16°C. Set against its neighbours, December runs about 5°C cooler than November and about 2°C warmer than January.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1147
2147
3147
4147
5147
6137
7137
8136
9136
10136
11136
12126
13126
14126
15126
16125
17125
18125
19125
20125
21115
22115
23115
24115
25115
26115
27115
28114
29114
30114
31114

How December really feels in Asakuchi

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.

Asakuchi weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 435.30.39.92.5
Feb11° / 546.80.510.72.7
Mar14° / 949.50.111.74.1
Apr19° / 11°11010012.86.0
May23° / 16°1289.9013.86.8
Jun26° / 20°17811.8014.36.0
Jul30° / 24°17712.1014.14.7
Aug32° / 25°999.6013.34.2
Sep28° / 22°14710.1012.25.8
Oct23° / 16°1117.4011.17.3
Nov17° / 10°566.1010.26.1
Dec12° / 485.509.73.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% 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 36%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36535
46535
56436
66436
76535
86535
96436
106436
116436
126337
136436
146436
156337
166337
176436
186337
196337
206436
216436
226436
236535
246535
256535
266634
276634
286535
296535
306535
316535

Chance of precipitation in December

Any precipitation

Asakuchi gets around 48 mm of rain over 5.5 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 17% and peaks near 21% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
121
221
321
421
520
620
720
819
919
1019
1118
1218
1317
1417
1517
1616
1716
1816
1916
2016
2116
2215
2315
2415
2515
2615
2715
2814
2914
3014
3114

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1982
2982
3982
4982
5991
6991
7991
8991
9991
10991
11991
12991
13991
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 11 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
111calm
212calm
312calm
412calm
512calm
612calm
712calm
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

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 7:00 AM to 7:17 AM, and sunset from 4:51 PM to 5:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.97:004:51
29.87:014:51
39.87:014:51
49.87:024:51
59.87:034:51
69.87:044:51
79.87:054:51
89.87:054:51
99.87:064:51
109.77:074:51
119.77:074:51
129.77:084:52
139.77:094:52
149.77:104:52
159.77:104:52
169.77:114:53
179.77:114:53
189.77:124:53
199.77:124:54
209.77:134:54
219.77:144:55
229.77:144:55
239.77:144:56
249.77:154:56
259.77:154:57
269.77:164:57
279.77:164:58
289.77:164:58
299.77:174:59
309.77:175:00
319.77:175:00

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.32 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.32 kWh/m² to a high of 5.53 kWh/m² in May across the year — December's 2.32 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.4Moderate
22.4Moderate
32.4Moderate
42.4Moderate
52.4Moderate
62.4Moderate
72.3Moderate
82.3Moderate
92.3Moderate
102.3Moderate
112.3Moderate
122.3Moderate
132.3Moderate
142.3Moderate
152.3Moderate
162.3Moderate
172.3Moderate
182.3Moderate
192.3Moderate
202.3Moderate
212.3Moderate
222.3Moderate
232.3Moderate
242.4Moderate
252.4Moderate
262.4Moderate
272.4Moderate
282.4Moderate
292.4Moderate
302.4Moderate
312.4Moderate
Planning a trip in December

Hazard calendar for Asakuchi

In seasonPeak

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

Asakuchi 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 Asakuchi?

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

3.7
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 Asakuchi.

What to pack for Asakuchi in December

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

In December, Asakuchi sees daytime highs around 12°C and nights near 6°C. Worth packing: a warm layer. About 6 days see rain.

a warm layer

Sea temperature near Asakuchi 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 18 km away) is warmest in August at about 28°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 3 to Nov 12 — about 5.4 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May18Cool
Jun22Refreshing
Jul25Warm
Aug28Warm
Sep27Warm
Oct23Refreshing
Nov20Cool
Dec16Cool

UV index in Asakuchi 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 Asakuchi peaks around July 12 at about 10 (very high) — 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 highModerateJul 12UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7Very high
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Asakuchi 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 Asakuchi is worst in April — around 24 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1324 µg/m³Dec 1414 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar23Moderate
Apr24Moderate
May22Moderate
Jun20Moderate
Jul17Moderate
Aug17Moderate
Sep16Moderate
Oct14Moderate
Nov15Moderate
Dec14Moderate
Location & terrain

Where is Asakuchi?

Asakuchi sits at 34.5°N, 133.6°E, 9 m above sea level, in Japan. The nearest listed city is Kamogatachō-kamogata, 1.0 km away.

Topography around Asakuchi

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

Within 3 km, the terrain around Asakuchi has significant variations in elevation — a maximum elevation change of 279 m around an average of 58 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 505 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,811 m.

The land around Asakuchi is covered by trees (56%) and artificial surfaces (29%) within 3 km, trees (42%), water (28%) and artificial surfaces (20%) within 16 km, and trees (64%) and water (24%) within 80 km.

3 km
279 m
16 km
505 m
80 km
1,811 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Kamogatachō-kamogata 1.0 km · Kasaoka 10 km · Ibara 14 km · Kurashiki 16 km · Kannabechō-yahiro 17 km · Sōja 21 km · Fukuyama 22 km · Takahashi 28 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 Asakuchi (34.5348°, 133.603°, elevation 9 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).