Mishōhirajō weather in December

In December, Mishōhirajō sees average daytime highs of 13°C and overnight lows near 9°C, with 100 mm of precipitation across 10.4 wet days and about 9.9 hours of daylight. It is the 10th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 15°C in the first days to 11°C by the end. The sky is clear or mostly clear about 36% 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 54 min by month's end. Set against the rest of the year, December is Mishōhirajō's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Mishōhirajō's year-round climate.

Daytime high
13°
10th warmest
Overnight low
3rd coldest
Precipitation
100 mm
10.4 wet days
Daylight
9 h 48 min
7:11 AM – 5:01 PM
Cloud cover
54%
3rd clearest
Wind
24 km/h
2nd windiest
Solar energy
2.54 kWh/m²
Travel score
3.6
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 15°C in the first days to 11°C by the end.

A typical December day in Mishōhirajō reaches about 13°C in the afternoon and slips back to 9°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 9°C and 17°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)
11512
21511
31511
41411
51411
61411
71411
81410
91410
101310
111310
121310
131310
141310
15139
16139
17129
18129
19129
20129
21129
22129
23129
24129
25128
26128
27128
28118
29118
30118
31118

Mishōhirajō 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
Jan10° / 8711.70.810.12.3
Feb11° / 9310.80.410.82.6
Mar14° / 10°13512.4011.73.8
Apr17° / 13°14610.7012.85.4
May20° / 17°17210.7013.76.2
Jun23° / 21°30614.9014.15.7
Jul26° / 24°21012.20146.2
Aug27° / 25°14112.1013.26.2
Sep26° / 23°20413.4012.26.3
Oct22° / 19°1649.7011.26.9
Nov17° / 14°1039.2010.35.8
Dec13° / 10010.40.29.93.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25545
35446
45545
55446
65446
75347
85248
95248
105149
115149
125149
135050
145050
155050
164951
174951
185050
195050
205050
214951
225050
235050
245149
255248
265248
275248
285347
295446
305347
315347

Chance of precipitation in December

Any precipitation

Mishōhirajō gets around 100 mm of rain and snow over 10.4 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 33% and peaks near 35% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
335
435
535
635
735
834
934
1034
1134
1233
1333
1433
1533
1632
1732
1832
1932
2032
2132
2232
2332
2432
2532
2632
2732
2832
2932
3032
3132

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 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19172
29172
39262
49262
59451
69451
79451
89541
99541
109541
119640
129640
139640
149640
159640
169640
179640
189640
199640
209730
219730
229730
239730
249730
259730
269730
279820
289820
299820
309820
319820

Wind in December

Winds average 24 km/h in December.

Across December, daily wind ranges from about 22 km/h on the calmest days to 25 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
122breezy
222breezy
322breezy
423breezy
523breezy
623breezy
723breezy
823breezy
923breezy
1023breezy
1124breezy
1224breezy
1324breezy
1424breezy
1524breezy
1624breezy
1724breezy
1824breezy
1924breezy
2024breezy
2124breezy
2224breezy
2324breezy
2424breezy
2524breezy
2624breezy
2724breezy
2825breezy
2925breezy
3025breezy
3125breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 hours at the start of December to 9 h 54 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 7:00 AM to 7:17 AM, and sunset from 4:59 PM to 5:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.07:004:59
210.07:014:59
310.07:024:59
49.97:024:59
59.97:034:59
69.97:044:59
79.97:054:59
89.97:054:59
99.97:064:59
109.97:074:59
119.97:085:00
129.97:085:00
139.97:095:00
149.87:105:00
159.87:105:01
169.87:115:01
179.87:115:01
189.87:125:02
199.87:135:02
209.87:135:02
219.87:145:03
229.87:145:03
239.87:145:04
249.87:155:04
259.87:155:05
269.87:165:05
279.87:165:06
289.87:165:07
299.87:175:07
309.87:175:08
319.97:175:08

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.54 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.54 kWh/m² to a high of 5.47 kWh/m² in May across the year — December's 2.54 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.6Moderate
22.6Moderate
32.6Moderate
42.6Moderate
52.6Moderate
62.6Moderate
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
222.6Moderate
232.6Moderate
242.6Moderate
252.6Moderate
262.6Moderate
272.6Moderate
282.6Moderate
292.6Moderate
302.7Moderate
312.7Moderate
Planning a trip in December

Hazard calendar for Mishōhirajō

In seasonPeak

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

Mishōhirajō 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 Mishōhirajō?

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

3.6
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 Mishōhirajō.

What to pack for Mishōhirajō in December

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

In December, Mishōhirajō sees daytime highs around 13°C and nights near 9°C. Worth packing: a warm layer, rain gear and a windbreaker. About 10 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Mishōhirajō 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 23 — about 7.8 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan19Cool
Feb18Cool
Mar18Cool
Apr19Cool
May21Refreshing
Jun23Refreshing
Jul26Warm
Aug28Warm
Sep27Warm
Oct25Warm
Nov23Refreshing
Dec20Refreshing

UV index in Mishōhirajō in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mishōhirajō peaks around June 23 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 — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJun 23UV 11Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug9Very high
Sep10Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Mishōhirajō 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 Mishōhirajō is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1420 µg/m³Oct 1410 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb15Moderate
Mar19Moderate
Apr20Moderate
May18Moderate
Jun15Moderate
Jul11Good
Aug11Good
Sep10Good
Oct10Good
Nov11Good
Dec10Good
Location & terrain

Where is Mishōhirajō?

Mishōhirajō sits at 33.0°N, 132.6°E, 10 m above sea level, in Japan. The nearest listed city is Sukumo, 16 km away.

Topography around Mishōhirajō

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

Within 3 km, the terrain around Mishōhirajō has significant variations in elevation — a maximum elevation change of 305 m around an average of 59 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,052 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,529 m.

The land around Mishōhirajō is covered by trees (67%) within 3 km, trees (49%) and water (48%) within 16 km, and water (62%) and trees (36%) within 80 km.

3 km
305 m
16 km
1,052 m
80 km
1,529 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Sukumo 16 km · Uwajima 29 km · Nakamura 34 km · Shimoda 39 km · Uwa 45 km · Yawatahama 56 km · Ōzu 60 km · Saiki 62 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 Mishōhirajō (32.9637°, 132.5661°, elevation 10 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).