Ukiha weather in December

In December, Ukiha sees average daytime highs of 11°C and overnight lows near 2°C, with 69 mm of precipitation across 8.3 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 13°C in the first days to 10°C by the end. The sky is clear or mostly clear about 27% 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 Ukiha's 3rd-clearest and 5th-windiest month. For the whole year in context, see Ukiha's year-round climate.

Daytime high
11°
10th warmest
Overnight low
3rd coldest
Precipitation
69 mm
8.3 wet days
Daylight
9 h 48 min
7:19 AM – 5:07 PM
Cloud cover
57%
3rd clearest
Wind
8 km/h
5th windiest
Solar energy
2.24 kWh/m²
Travel score
3.0
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 Ukiha 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
5133
6133
7123
8123
9123
10123
11122
12112
13112
14112
15112
16112
17112
18112
19112
20112
21112
22101
23101
24101
25101
26101
27101
28101
29101
30101
31101

How December really feels in Ukiha

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 18 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
18
wind chill below the day's low

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

Ukiha 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 / 638.72.1101.8
Feb10° / 829.41.710.82.4
Mar14° / 12912.60.511.74.0
Apr19° / 14511.6012.85.8
May24° / 14°16411.4013.76.5
Jun26° / 18°36517.2014.25.2
Jul29° / 23°30618.20144.1
Aug31° / 23°16315.4013.24.0
Sep28° / 19°16912.5012.25.7
Oct23° / 13°1007.8011.27.2
Nov17° / 838.2010.35.7
Dec11° / 698.30.89.83.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 22% of December, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25446
35347
45347
55248
65149
75149
85050
95050
105050
114951
124951
134852
144852
154753
164753
174753
184852
194852
204753
214753
224753
234852
244852
254852
264753
274753
284753
294753
304753
314654

Chance of precipitation in December

Any precipitationSnow

Ukiha gets around 69 mm of rain and snow over 8.3 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 27% and peaks near 30% on the wettest days, and about 1 day brings snow. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1301
2301
3301
4301
5301
6301
7302
8292
9292
10282
11282
12282
13272
14272
15272
16262
17262
18262
19253
20253
21253
22253
23254
24244
25244
26245
27245
28246
29246
30246
31246

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 (%)
1973
2973
3973
4982
5982
6982
7982
8991
9991
10991
11991
12991
13991
14991
15991
161000
171000
181000
191000
201000
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.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
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 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 7:08 AM to 7:26 AM, and sunset from 5:05 PM to 5:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.07:085:05
29.97:095:05
39.97:105:05
49.97:115:05
59.97:115:05
69.97:125:05
79.97:135:05
89.97:145:05
99.97:145:06
109.87:155:06
119.87:165:06
129.87:175:06
139.87:175:06
149.87:185:07
159.87:185:07
169.87:195:07
179.87:205:08
189.87:205:08
199.87:215:08
209.87:215:09
219.87:225:09
229.87:225:10
239.87:235:10
249.87:235:11
259.87:245:11
269.87:245:12
279.87:245:12
289.87:255:13
299.87:255:13
309.87:255:14
319.87:265:15

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.24 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.24 kWh/m² to a high of 5.22 kWh/m² in May across the year — December's 2.24 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.4Moderate
22.3Moderate
32.3Moderate
42.3Moderate
52.3Moderate
62.3Moderate
72.3Moderate
82.3Moderate
92.3Moderate
102.2Moderate
112.2Moderate
122.2Moderate
132.2Moderate
142.2Moderate
152.2Moderate
162.2Moderate
172.2Moderate
182.2Moderate
192.2Moderate
202.2Moderate
212.2Moderate
222.2Moderate
232.3Moderate
242.3Moderate
252.3Moderate
262.3Moderate
272.3Moderate
282.3Moderate
292.3Moderate
302.3Moderate
312.3Moderate
Planning a trip in December

Hazard calendar for Ukiha

In seasonPeak

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

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

Ukiha'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 Ukiha?

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

3.0
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 Ukiha.

What to pack for Ukiha in December

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

In December, Ukiha sees daytime highs around 11°C and nights near 2°C. Pack a warm layer. Worth having: rain gear. About 8 days see rain.

a warm layerrain gear

Sea temperature near Ukiha in December

The nearest coast averages about 17°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 43 km away) is warmest in August at about 27°C and coldest in February near 13°C.

It's comfortable for a long swim from May 27 to Nov 12 — about 5.6 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr16Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Cool
Dec17Cool

UV index in Ukiha 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 Ukiha peaks around July 13 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highModerateJul 13UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Ukiha 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 Ukiha is worst in March — around 25 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (July, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2325 µg/m³Jul 2114 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb20Moderate
Mar25Moderate
Apr25Moderate
May23Moderate
Jun19Moderate
Jul13Moderate
Aug15Moderate
Sep14Moderate
Oct14Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Ukiha?

Ukiha sits at 33.4°N, 130.7°E, 27 m above sea level, in Japan. The nearest listed city is Tanushimarumachi-toyoki, 6.0 km away.

Topography around Ukiha

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

Within 3 km, the terrain around Ukiha has significant variations in elevation — a maximum elevation change of 278 m around an average of 40 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 965 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,799 m.

The land around Ukiha is covered by cropland (36%), artificial surfaces (27%) and trees (26%) within 3 km, trees (71%) within 16 km, and trees (52%) and water (27%) within 80 km.

3 km
278 m
16 km
965 m
80 km
1,799 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Tanushimarumachi-toyoki 6.0 km · Asakura 7.0 km · Amagi 11 km · Tachiarai 13 km · Yamaguma 15 km · Yame 17 km · Hita 18 km · Ogōri 19 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 Ukiha (33.3563°, 130.7497°, elevation 27 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).