Owase weather in December

In December, Owase sees average daytime highs of 12°C and overnight lows near 8°C, with 97 mm of precipitation across 7.6 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 14°C in the first days to 10°C by the end. The sky is clear or mostly clear about 59% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 54 min at the start of December to 9 h 48 min by month's end. Set against the rest of the year, December is Owase's 1st-clearest and 4th-windiest month. For the whole year in context, see Owase's year-round climate.

Daytime high
12°
10th warmest
Overnight low
4th coldest
Precipitation
97 mm
7.6 wet days
Daylight
9 h 42 min
6:59 AM – 4:44 PM
Cloud cover
40%
1st clearest
Wind
16 km/h
4th windiest
Solar energy
2.69 kWh/m²
Travel score
3.5
out of 10

Owase is city in Mie Prefecture, Japan.

Density
88/km²
people per km²
Founded
1954

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 14°C in the first days to 10°C by the end.

A typical December day in Owase reaches about 12°C in the afternoon and slips back to 8°C overnight — a 4°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.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
11410
21410
31410
41410
51310
6139
7139
8139
9139
10139
11129
12128
13128
14128
15128
16128
17128
18128
19118
20118
21117
22117
23117
24117
25117
26117
27117
28117
29107
30107
31106

Owase 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 / 977.11.4102.2
Feb10° / 1008.51.310.72.4
Mar13° / 18311.40.611.73.5
Apr16° / 12°19411.5012.85.0
May20° / 17°23113.3013.75.7
Jun23° / 20°32617.1014.25.2
Jul26° / 24°24416.10145.6
Aug27° / 25°23015013.35.8
Sep25° / 22°32917012.25.7
Oct21° / 18°34315.1011.15.8
Nov17° / 13°15610.4010.25.4
Dec12° / 977.60.49.83.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 59% of the time in December, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16832
26832
36832
46931
56931
67030
77129
87129
97228
107228
117228
127228
137228
147228
157228
167327
177228
187228
197327
207327
217525
227525
237525
247624
257624
267723
277723
287822
297723
307723
317723

Chance of precipitation in December

Any precipitationSnow

Owase gets around 97 mm of rain and snow over 7.6 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 25% and peaks near 30% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1300
2300
3300
4290
5290
6280
7280
8280
9270
10270
11261
12261
13261
14251
15251
16241
17241
18241
19231
20231
21231
22221
23222
24222
25212
26212
27202
28202
29202
30202
31192

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 (%)Humid (%)
19541
29541
39631
49631
59631
69820
79820
89820
99820
109910
119910
129910
139910
149910
159910
169910
179910
1810000
1910000
2010000
2110000
2210000
2310000
2410000
2510000
2610000
2710000
2810000
2910000
3010000
3110000

Wind in December

Winds average 16 km/h in December.

Across December, daily wind ranges from about 15 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 54 min 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 6 minutes over December. Sunrise moves from 6:48 AM to 7:06 AM, and sunset from 4:42 PM to 4:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.96:484:42
29.96:494:42
39.96:504:42
49.96:514:42
59.86:514:42
69.86:524:42
79.86:534:42
89.86:544:42
99.86:544:42
109.86:554:42
119.86:564:42
129.86:574:43
139.86:574:43
149.86:584:43
159.76:594:43
169.76:594:44
179.77:004:44
189.77:004:44
199.77:014:45
209.77:014:45
219.77:024:46
229.77:024:46
239.77:034:46
249.77:034:47
259.77:044:47
269.77:044:48
279.77:044:49
289.77:054:49
299.77:054:50
309.87:054:50
319.87:064:51

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.69 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.69 kWh/m² to a high of 5.33 kWh/m² in May across the year — December's 2.69 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.7Moderate
22.7Moderate
32.7Moderate
42.7Moderate
52.7Moderate
62.7Moderate
72.7Moderate
82.7Moderate
92.7Moderate
102.7Moderate
112.7Moderate
122.7Moderate
132.7Moderate
142.7Moderate
152.7Moderate
162.7Moderate
172.7Moderate
182.7Moderate
192.7Moderate
202.7Moderate
212.7Moderate
222.7Moderate
232.8Moderate
242.8Moderate
252.8Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.9Moderate
312.9Moderate
Planning a trip in December

Hazard calendar for Owase

In seasonPeak

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

Owase 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 Owase?

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

3.5
Sightseeing
9th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Owase.

What to pack for Owase in December

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

In December, Owase sees daytime highs around 12°C and nights near 8°C. Pack a warm layer. About 8 days see rain.

a warm layer

Sea temperature near Owase 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 17 km away) is warmest in August at about 27°C and coldest in February near 16°C.

It's comfortable for a long swim from May 21 to Nov 29 — about 6.3 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan17Cool
Feb16Cool
Mar16Cool
Apr18Cool
May20Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov21Refreshing
Dec19Cool

UV index in Owase 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 Owase peaks around July 13 at about 10 (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 13UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Extreme
Jul11Extreme
Aug10Very high
Sep10Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Owase 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 Owase is worst in April — around 18 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1318 µg/m³Dec 149 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar18Moderate
Apr18Moderate
May17Moderate
Jun13Moderate
Jul9Good
Aug9Good
Sep9Good
Oct10Good
Nov10Good
Dec9Good
Location & terrain

Where is Owase?

Owase sits at 34.1°N, 136.2°E, 4 m above sea level, in Japan. The nearest listed city is Kumano, 19 km away.

Topography around Owase

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

Within 3 km, the terrain around Owase has significant variations in elevation — a maximum elevation change of 527 m around an average of 140 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,688 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,878 m.

The land around Owase is covered by trees (70%) within 3 km, trees (67%) and water (31%) within 16 km, and trees (61%) and water (32%) within 80 km.

3 km
527 m
16 km
1,688 m
80 km
1,878 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Kumano 19 km · Shingū 42 km · Ōuda-yamaguchi 49 km · Shimobuchi 52 km · Gojō 56 km · Haibara-akanedai 57 km · Sakurai 58 km · Kashiwara 58 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 Owase (34.0667°, 136.2°, elevation 4 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).