Daisen weather in December

In December, Daisen sees average daytime highs of 4°C and overnight lows near -2°C, with 130 mm of precipitation across 21 wet days and about 9.3 hours of daylight. It is the 10th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 7°C in the first days to 3°C by the end. The sky is clear or mostly clear about 7% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 24 min at the start of December to 9 h 18 min by month's end. Set against the rest of the year, December is Daisen's 9th-clearest and 4th-windiest month. For the whole year in context, see Daisen's year-round climate.

Daytime high
10th warmest
Overnight low
-2°
3rd coldest
Precipitation
130 mm
21 wet days
Daylight
9 h 12 min
6:57 AM – 4:11 PM
Cloud cover
74%
9th clearest
Wind
10 km/h
4th windiest
Solar energy
1.69 kWh/m²
Travel score
0.1
out of 10

Daisen is city in Akita prefecture, Japan.

Density
105/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 7°C in the first days to 3°C by the end.

A typical December day in Daisen reaches about 4°C in the afternoon and slips back to -2°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 0°C and 9°C. Set against its neighbours, December runs about 6°C cooler than November and about 3°C warmer than January.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
171
270
370
460
560
660
76-1
85-1
95-1
105-1
115-1
125-2
134-2
144-2
154-2
164-2
174-2
184-2
194-2
204-3
213-3
223-3
233-3
243-3
253-3
263-3
273-3
283-3
293-3
303-3
312-4

How December really feels in Daisen

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 31 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
31
wind chill below the day's low

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

Daisen weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°11021.121.69.50.0
Feb / -5°90171710.40.0
Mar / -1°11517.912.111.70.7
Apr13° / 11215.22.3133.3
May19° / 10°12113.5014.15.5
Jun23° / 15°13112.8014.76.0
Jul26° / 19°20617014.55.4
Aug27° / 20°17316.2013.55.4
Sep24° / 16°15214.2012.35.8
Oct17° / 14114.10115.0
Nov11° / 12917.63.59.82.1
Dec / -2°1302115.99.30.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% 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 77%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12575
22476
32476
42476
52476
62377
72377
82278
92377
102377
112278
122278
132278
142278
152278
162278
172278
182278
192278
202278
212377
222377
232377
242377
252476
262476
272377
282377
292377
302377
312377

Chance of precipitation in December

Any precipitationSnow

Daisen gets around 130 mm of rain and snow over 21 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 68% and peaks near 72% on the wettest days, and about 16 days bring snow. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)Snow chance (%)
16330
26332
36434
46436
56538
66540
76642
86643
96745
106847
116848
126949
136950
146951
156952
166952
176953
186954
197055
207055
217056
227057
237058
247058
257159
267160
277161
287262
297264
307265
317266

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 (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in December

Winds average 10 km/h in December.

Across December, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 24 min at the start of December to 9 h 18 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 6:45 AM to 7:04 AM, and sunset from 4:10 PM to 4:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.46:454:10
29.46:464:10
39.46:474:10
49.46:484:10
59.46:494:10
69.36:504:10
79.36:514:10
89.36:514:10
99.36:524:10
109.36:534:10
119.36:544:10
129.36:554:10
139.36:554:10
149.26:564:11
159.26:574:11
169.26:574:11
179.26:584:11
189.26:584:12
199.26:594:12
209.27:004:13
219.27:004:13
229.27:014:13
239.27:014:14
249.27:014:14
259.27:024:15
269.27:024:16
279.27:034:16
289.27:034:17
299.27:034:17
309.27:034:18
319.37:044:19

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.69 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.69 kWh/m² to a high of 5.31 kWh/m² in May across the year — December's 1.69 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.7Dim
21.7Dim
31.7Dim
41.7Dim
51.7Dim
61.7Dim
71.7Dim
81.7Dim
91.7Dim
101.7Dim
111.7Dim
121.7Dim
131.7Dim
141.7Dim
151.7Dim
161.7Dim
171.7Dim
181.7Dim
191.7Dim
201.7Dim
211.7Dim
221.8Dim
231.8Dim
241.8Dim
251.8Dim
261.8Dim
271.8Dim
281.9Dim
291.9Dim
301.9Dim
311.9Dim
Planning a trip in December

Hazard calendar for Daisen

In seasonPeak

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

Daisen 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 Daisen?

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

0.1
Sightseeing
10th-best month of the year
0.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Daisen.

What to pack for Daisen in December

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

In December, Daisen sees daytime highs around 4°C and nights near -2°C. Pack a warm layer and rain gear. Worth having: a heavy coat. About 21 days see rain.

a warm layerrain geara heavy coat

Sea temperature near Daisen in December

The nearest coast averages about 14°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 53 km away) is warmest in August at about 26°C and coldest in March near 9°C.

It's comfortable for a long swim from Jun 27 to Oct 24 — about 3.9 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb10Bracing
Mar9Bracing
Apr10Bracing
May14Bracing
Jun19Cool
Jul22Refreshing
Aug26Warm
Sep25Warm
Oct21Refreshing
Nov18Cool
Dec14Bracing

UV index in Daisen 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 Daisen peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 18UV 8Jan 11UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar3Moderate
Apr6High
May8Very high
Jun8Very high
Jul6High
Aug9Very high
Sep7High
Oct5Moderate
Nov2Moderate
Dec2Low

Air quality in Daisen 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 Daisen is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 149 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb14Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun15Moderate
Jul13Moderate
Aug11Good
Sep10Good
Oct10Good
Nov10Good
Dec9Good
Location & terrain

Where is Daisen?

Daisen sits at 39.4°N, 140.5°E, 22 m above sea level, in Japan. The nearest listed city is Ōmagari, 1.0 km away.

Topography around Daisen

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

Within 3 km, the terrain around Daisen has only modest variations in elevation — a maximum elevation change of 24 m around an average of 26 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,041 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,211 m.

The land around Daisen is covered by cropland (58%) and artificial surfaces (27%) within 3 km, trees (50%) and cropland (39%) within 16 km, and trees (70%) within 80 km.

3 km
24 m
16 km
1,041 m
80 km
2,211 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Ōmagari 1.0 km · Rokugō 6.0 km · Yokote 15 km · Yuzawa 31 km · Semboku 37 km · Yurihonjō 38 km · Akita 44 km · Shizukuishi 51 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 Daisen (39.4412°, 140.4896°, elevation 22 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).