Kiyosu weather in December

In December, Kiyosu sees average daytime highs of 11°C and overnight lows near 3°C, with 65 mm of precipitation across 6.8 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 13°C in the first days to 10°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 9 h 48 min at the start of December to 9 h 42 min by month's end. Set against the rest of the year, December is Kiyosu's 1st-clearest and 6th-windiest month. For the whole year in context, see Kiyosu's year-round climate.

Daytime high
11°
10th warmest
Overnight low
3rd coldest
Precipitation
65 mm
6.8 wet days
Daylight
9 h 36 min
7:00 AM – 4:38 PM
Cloud cover
44%
1st clearest
Wind
8 km/h
6th windiest
Solar energy
2.44 kWh/m²
Travel score
3.3
out of 10

Kiyosu is city in Aichi prefecture, Japan.

Density
5,060/km²
people per km²
Founded
2005

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 13°C in the first days to 10°C by the end.

A typical December day in Kiyosu reaches about 11°C in the afternoon and slips back to 3°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 15°C. Set against its neighbours, December runs about 5°C cooler than November and about 3°C warmer than January.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1145
2145
3135
4135
5134
6134
7134
8124
9124
10124
11123
12123
13123
14113
15113
16113
17113
18112
19112
20112
21112
22112
23102
24102
25102
26102
27102
28101
29101
30101
31101

How December really feels in Kiyosu

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 13 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
13
wind chill below the day's low

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

Kiyosu 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 / 6370.99.92.0
Feb10° / 697.11.110.72.4
Mar14° / 12710.70.111.74.0
Apr19° / 14711.2012.95.9
May24° / 14°17611.9013.86.5
Jun27° / 19°22215.1014.35.4
Jul30° / 23°27618.4014.13.8
Aug32° / 24°18115.5013.33.6
Sep28° / 20°24814012.25.3
Oct23° / 14°19211.3011.16.7
Nov17° / 997.6010.15.7
Dec11° / 656.80.39.73.3

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 19% of December, with mostly cloudy or overcast conditions the remaining 30%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26436
36535
46535
56634
66634
76733
86733
96832
106832
116931
126931
136931
146931
156931
167030
177030
187030
197129
207228
217228
227327
237327
247327
257327
267426
277426
287426
297525
307525
317426

Chance of precipitation in December

Any precipitationSnow

Kiyosu gets around 65 mm of rain and snow over 6.8 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 22% and peaks near 22% on the wettest days, and about 0 day brings snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
1220
2220
3220
4220
5220
6220
7220
8220
9220
10220
11220
12221
13221
14221
15221
16221
17221
18221
19221
20221
21222
22222
23222
24222
25212
26212
27212
28212
29212
30212
31212

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
81000
91000
101000
111000
121000
131000
141000
151000
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 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 48 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 6 minutes over December. Sunrise moves from 6:48 AM to 7:06 AM, and sunset from 4:36 PM to 4:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.86:484:36
29.86:494:36
39.86:504:36
49.86:514:36
59.76:524:36
69.76:534:36
79.76:534:36
89.76:544:36
99.76:554:36
109.76:564:37
119.76:564:37
129.76:574:37
139.76:584:37
149.66:584:37
159.66:594:38
169.67:004:38
179.67:004:38
189.67:014:39
199.67:014:39
209.67:024:39
219.67:024:40
229.67:034:40
239.67:034:41
249.67:044:41
259.67:044:42
269.67:054:42
279.67:054:43
289.67:054:44
299.67:064:44
309.67:064:45
319.77:064:46

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.44 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.44 kWh/m² to a high of 5.44 kWh/m² in May across the year — December's 2.44 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.5Moderate
22.5Moderate
32.5Moderate
42.4Moderate
52.4Moderate
62.4Moderate
72.4Moderate
82.4Moderate
92.4Moderate
102.4Moderate
112.4Moderate
122.4Moderate
132.4Moderate
142.4Moderate
152.4Moderate
162.4Moderate
172.5Moderate
182.5Moderate
192.5Moderate
202.5Moderate
212.5Moderate
222.5Moderate
232.5Moderate
242.5Moderate
252.5Moderate
262.6Moderate
272.6Moderate
282.6Moderate
292.6Moderate
302.6Moderate
312.6Moderate
Planning a trip in December

Hazard calendar for Kiyosu

In seasonPeak

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

Kiyosu 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 Kiyosu?

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

3.3
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 Kiyosu.

What to pack for Kiyosu in December

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

In December, Kiyosu sees daytime highs around 11°C and nights near 3°C. Pack a warm layer. About 7 days see rain.

a warm layer

Sea temperature near Kiyosu 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 38 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 31 to Nov 9 — 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
Mar14Bracing
Apr15Cool
May18Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Kiyosu in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kiyosu peaks around July 13 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 13UV 10Dec 22UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Kiyosu 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 Kiyosu is worst in April — around 26 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1125 µg/m³Aug 1817 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb20Moderate
Mar25Moderate
Apr26Moderate
May25Moderate
Jun21Moderate
Jul17Moderate
Aug17Moderate
Sep17Moderate
Oct18Moderate
Nov18Moderate
Dec16Moderate
Location & terrain

Where is Kiyosu?

Kiyosu sits at 35.2°N, 136.8°E, 3 m above sea level, in Japan. The nearest listed city is Ama, 5.0 km away.

Topography around Kiyosu

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

Within 3 km, the terrain around Kiyosu has only modest variations in elevation — a maximum elevation change of 22 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 136 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,181 m.

The land around Kiyosu is covered by artificial surfaces (76%) within 3 km, artificial surfaces (68%) and cropland (20%) within 16 km, and trees (60%) within 80 km.

3 km
22 m
16 km
136 m
80 km
2,181 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Ama 5.0 km · Ōharu 5.0 km · Kitanagoya 5.0 km · Inazawa 6.0 km · Nagoya 8.0 km · Iwakura 8.0 km · Toyoyama 8.0 km · Haruta 9.0 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 Kiyosu (35.2167°, 136.8333°, elevation 3 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).