Hitoyoshi weather in December

In December, Hitoyoshi sees average daytime highs of 11°C and overnight lows near 2°C, with 85 mm of precipitation across 9 wet days and about 9.9 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 13°C in the first days to 10°C by the end. The sky is clear or mostly clear about 34% 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 Hitoyoshi's 3rd-clearest and 5th-windiest month. For the whole year in context, see Hitoyoshi's year-round climate.

Daytime high
11°
10th warmest
Overnight low
3rd coldest
Precipitation
85 mm
9 wet days
Daylight
9 h 54 min
7:16 AM – 5:10 PM
Cloud cover
53%
3rd clearest
Wind
8 km/h
5th windiest
Solar energy
2.45 kWh/m²
Travel score
2.9
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 13°C in the first days to 10°C by the end.

A typical December day in Hitoyoshi reaches about 11°C in the afternoon and slips back to 2°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 6°C and 16°C. Set against its neighbours, December runs about 6°C cooler than November and about 2°C warmer than January.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1144
2134
3134
4134
5134
6123
7123
8123
9123
10123
11113
12113
13112
14112
15112
16112
17112
18112
19102
20102
21102
22102
23102
24101
25101
26101
27101
28101
29101
30101
31101

How December really feels in Hitoyoshi

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 17 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
17
wind chill below the day's low

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

Hitoyoshi 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
Jan / 819.72.310.11.7
Feb10° / 104101.610.82.3
Mar14° / 15213.50.411.83.8
Apr19° / 17812.3012.85.5
May23° / 14°20212.6013.66.2
Jun25° / 18°49719.6014.15.0
Jul28° / 22°36320.5013.94.2
Aug30° / 23°17918013.24.2
Sep27° / 19°18514.4012.25.7
Oct22° / 13°1109.2011.27.0
Nov17° / 1028.6010.35.6
Dec11° / 8590.99.92.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 20% of December, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35644
45644
55644
65545
75446
85545
95446
105446
115347
125347
135347
145347
155248
165248
175248
185347
195347
205347
215446
225446
235446
245446
255446
265545
275545
285545
295545
305545
315446

Chance of precipitation in December

Any precipitationSnow

Hitoyoshi gets around 85 mm of rain and snow over 9 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 29% and peaks near 31% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1310
2310
3310
4310
5311
6311
7301
8301
9291
10291
11292
12282
13282
14282
15283
16283
17283
18283
19283
20283
21284
22284
23284
24285
25285
26295
27295
28296
29296
30296
31296

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 (%)
1955
2964
3964
4964
5973
6973
7973
8982
9982
10982
11982
12991
13991
14991
15991
16991
17991
18991
19991
20991
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
17calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

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 7:06 AM to 7:23 AM, and sunset from 5:08 PM to 5:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.07:065:08
210.07:065:08
310.07:075:08
410.07:085:08
510.07:095:08
610.07:095:08
710.07:105:08
810.07:115:08
99.97:125:08
109.97:125:09
119.97:135:09
129.97:145:09
139.97:145:09
149.97:155:10
159.97:165:10
169.97:165:10
179.97:175:10
189.97:175:11
199.97:185:11
209.97:185:12
219.97:195:12
229.97:195:13
239.97:205:13
249.97:205:14
259.97:215:14
269.97:215:15
279.97:215:15
289.97:225:16
299.97:225:16
309.97:225:17
319.97:235:18

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.45 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.45 kWh/m² to a high of 5.04 kWh/m² in May across the year — December's 2.45 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
102.4Moderate
112.4Moderate
122.4Moderate
132.4Moderate
142.4Moderate
152.4Moderate
162.4Moderate
172.4Moderate
182.4Moderate
192.5Moderate
202.5Moderate
212.5Moderate
222.5Moderate
232.5Moderate
242.5Moderate
252.5Moderate
262.5Moderate
272.5Moderate
282.5Moderate
292.6Moderate
302.6Moderate
312.6Moderate
Planning a trip in December

Hazard calendar for Hitoyoshi

In seasonPeak

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

Hitoyoshi sits in the Pacific typhoon belt; the season peaks July–October.

Hitoyoshi's rainy season runs June–July, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Hitoyoshi?

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

2.9
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 Hitoyoshi.

What to pack for Hitoyoshi in December

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

In December, Hitoyoshi sees daytime highs around 11°C and nights near 2°C. Pack a warm layer. Worth having: rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Hitoyoshi 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 37 km away) is warmest in August at about 28°C and coldest in February near 16°C.

It's comfortable for a long swim from May 16 to Dec 4 — about 6.7 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan17Cool
Feb16Cool
Mar17Cool
Apr18Cool
May20Refreshing
Jun23Refreshing
Jul26Warm
Aug28Warm
Sep27Warm
Oct24Warm
Nov22Refreshing
Dec19Cool

UV index in Hitoyoshi 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 Hitoyoshi peaks around June 22 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 highHighModerateJun 22UV 11Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar7High
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov5Moderate
Dec3Moderate

Air quality in Hitoyoshi 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 Hitoyoshi is worst in March — around 24 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2424 µg/m³Jul 2114 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar24Moderate
Apr24Moderate
May22Moderate
Jun18Moderate
Jul13Moderate
Aug14Moderate
Sep14Moderate
Oct14Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Hitoyoshi?

Hitoyoshi sits at 32.2°N, 130.8°E, 130 m above sea level, in Japan. The nearest listed city is Ōkuchi-shinohara, 20 km away.

Topography around Hitoyoshi

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

Within 3 km, the terrain around Hitoyoshi has only modest variations in elevation — a maximum elevation change of 194 m around an average of 134 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,122 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,715 m.

The land around Hitoyoshi is covered by trees (48%) and artificial surfaces (26%) within 3 km, trees (87%) within 16 km, and trees (67%) and water (21%) within 80 km.

3 km
194 m
16 km
1,122 m
80 km
1,715 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Ōkuchi-shinohara 20 km · Ebino 21 km · Isa 21 km · Sashiki 25 km · Minamata 33 km · Kobayashi 34 km · Honmachi 35 km · Tsuruda 39 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 Hitoyoshi (32.2167°, 130.75°, elevation 130 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).