Muroto-misakicho weather in December

In December, Muroto-misakicho sees average daytime highs of 15°C and overnight lows near 12°C, with 99 mm of rain across 7.5 wet days and about 9.8 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 16°C in the first days to 13°C by the end. The sky is clear or mostly clear about 51% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 hours at the start of December to 9 h 48 min by month's end. Set against the rest of the year, December is Muroto-misakicho's 1st-clearest and 5th-windiest month. For the whole year in context, see Muroto-misakicho's year-round climate.

Daytime high
15°
10th warmest
Overnight low
12°
4th coldest
Rainfall
99 mm
7.5 wet days
Daylight
9 h 48 min
7:05 AM – 4:54 PM
Cloud cover
44%
1st clearest
Wind
22 km/h
5th windiest
Solar energy
2.65 kWh/m²
Travel score
4.8
out of 10

Muroto-misakicho is city in Kōchi Prefecture, Japan.

Density
71/km²
people per km²
Founded
1959

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 16°C in the first days to 13°C by the end.

A typical December day in Muroto-misakicho reaches about 15°C in the afternoon and slips back to 12°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 18°C. Set against its neighbours, December runs about 4°C cooler than November and about 2°C warmer than January.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11714
21714
31613
41613
51613
61613
71613
81613
91512
101512
111512
121512
131512
141512
151512
161411
171411
181411
191411
201411
211411
221411
231411
241411
251411
261410
271410
281310
291310
301310
311310

How December really feels in Muroto-misakicho

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.

Muroto-misakicho 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 daysDaylight (hours)Travel score
Jan12° / 948103.6
Feb13° / 1048.610.83.6
Mar15° / 12°16711.911.74.5
Apr18° / 16°18911.512.85.7
May21° / 19°20712.313.76.1
Jun24° / 22°33216.114.25.6
Jul27° / 25°26115145.7
Aug28° / 26°20315.513.25.7
Sep26° / 25°28015.712.25.8
Oct23° / 21°25012.511.26.6
Nov19° / 16°1519.710.36.3
Dec15° / 12°997.59.84.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in December, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of December, with mostly cloudy or overcast conditions the remaining 33%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16337
26337
36337
46337
56436
66535
76535
86634
96634
106634
116634
126634
136634
146634
156634
166733
176733
186733
196733
206832
216931
226931
236931
247030
257030
267030
277129
287129
297129
307129
317228

Chance of precipitation in December

Any precipitation

Muroto-misakicho gets around 99 mm of rain over 7.5 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 24% and peaks near 31% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
131
231
330
429
529
628
727
827
926
1026
1125
1225
1324
1424
1523
1623
1723
1822
1922
2022
2122
2222
2322
2422
2522
2621
2721
2821
2921
3021
3121

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 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
188831
289821
390721
491720
591720
692620
793610
893610
994510
1094510
1194510
1294510
1394510
1496400
1596400
1696400
1796400
1896400
1996400
2097300
2197300
2297300
2397300
2497300
2597300
2697300
2798200
2898200
2998200
3098200
3198200

Wind in December

Winds average 22 km/h in December.

Across December, daily wind ranges from about 21 km/h on the calmest days to 22 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1722breezy
1822breezy
1922breezy
2022breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3022breezy
3122breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 hours at the start of December to 9 h 48 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 6:54 AM to 7:12 AM, and sunset from 4:52 PM to 5:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.06:544:52
29.96:554:52
39.96:564:52
49.96:574:52
59.96:584:52
69.96:584:52
79.96:594:52
89.97:004:52
99.97:014:52
109.87:014:52
119.87:024:52
129.87:034:53
139.87:034:53
149.87:044:53
159.87:054:53
169.87:054:54
179.87:064:54
189.87:064:54
199.87:074:55
209.87:074:55
219.87:084:56
229.87:084:56
239.87:094:57
249.87:094:57
259.87:104:58
269.87:104:58
279.87:114:59
289.87:114:59
299.87:115:00
309.87:115:01
319.87:125:01

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.65 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.65 kWh/m² to a high of 5.68 kWh/m² in August across the year — December's 2.65 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.7Moderate
22.7Moderate
32.6Moderate
42.6Moderate
52.6Moderate
62.6Moderate
72.6Moderate
82.6Moderate
92.6Moderate
102.6Moderate
112.6Moderate
122.6Moderate
132.6Moderate
142.6Moderate
152.6Moderate
162.6Moderate
172.6Moderate
182.6Moderate
192.6Moderate
202.7Moderate
212.7Moderate
222.7Moderate
232.7Moderate
242.7Moderate
252.7Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in December

Hazard calendar for Muroto-misakicho

In seasonPeak

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

Muroto-misakicho 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 Muroto-misakicho?

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

4.8
Sightseeing
9th-best month of the year
0.3
Beach & pool
10th-best month of the year

December is a reasonable time to visit Muroto-misakicho for sightseeing.

What to pack for Muroto-misakicho in December

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

In December, Muroto-misakicho sees daytime highs around 15°C and nights near 12°C. Worth packing: a warm layer and a windbreaker. About 8 days see rain.

a warm layera windbreaker

Sea temperature near Muroto-misakicho in December

The nearest coast averages about 20°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 28°C and coldest in February near 18°C.

It's comfortable for a long swim from May 1 to Dec 20 — about 7.7 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan18Cool
Feb18Cool
Mar18Cool
Apr19Cool
May21Refreshing
Jun24Refreshing
Jul26Warm
Aug28Warm
Sep27Warm
Oct25Warm
Nov23Refreshing
Dec20Refreshing

UV index in Muroto-misakicho 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 Muroto-misakicho peaks around July 10 at about 11 (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 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJul 10UV 11Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7Very high
May9Very high
Jun11Extreme
Jul11Extreme
Aug9Very high
Sep10Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Muroto-misakicho 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 Muroto-misakicho is worst in April — around 19 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1419 µg/m³Dec 129 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb15Moderate
Mar18Moderate
Apr19Moderate
May17Moderate
Jun14Moderate
Jul10Good
Aug10Good
Sep10Good
Oct10Good
Nov10Good
Dec9Good
Location & terrain

Where is Muroto-misakicho?

Muroto-misakicho sits at 33.3°N, 134.2°E, 99 m above sea level, in Japan. The nearest listed city is Aki, 34 km away.

Topography around Muroto-misakicho

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

Within 3 km, the terrain around Muroto-misakicho has significant variations in elevation — a maximum elevation change of 374 m around an average of 64 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 771 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,939 m.

The land around Muroto-misakicho is covered by trees (54%) and water (36%) within 3 km, water (77%) and trees (22%) within 16 km, and water (55%) and trees (43%) within 80 km.

3 km
374 m
16 km
771 m
80 km
1,939 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Aki 34 km · Yamashita 53 km · Tosayamadachō-nakano 57 km · Nankoku 58 km · Kochi 66 km · Tosa 71 km · Ino 74 km · Susaki 82 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 Muroto-misakicho (33.2866°, 134.1683°, elevation 99 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).