Hadano weather in December

In December, Hadano sees average daytime highs of 11°C and overnight lows near 7°C, with 94 mm of precipitation across 10.9 wet days and about 9.7 hours of daylight. It is the 10th-warmest and 12th-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 48% 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 36 min by month's end. Set against the rest of the year, December is Hadano's 1st-clearest and 8th-windiest month. For the whole year in context, see Hadano's year-round climate.

Daytime high
11°
10th warmest
Overnight low
4th coldest
Precipitation
94 mm
10.9 wet days
Daylight
9 h 36 min
6:51 AM – 4:28 PM
Cloud cover
46%
1st clearest
Wind
13 km/h
8th windiest
Solar energy
2.33 kWh/m²
Travel score
2.8
out of 10

Hadano is city in Kanagawa prefecture, Japan.

Density
1,579/km²
people per km²
Founded
1955

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 Hadano reaches about 11°C in the afternoon and slips back to 7°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 14°C. Set against its neighbours, December runs about 4°C cooler than November and about 3°C warmer than January.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1139
2139
3139
4139
5139
6128
7128
8128
9128
10128
11128
12118
13117
14117
15117
16117
17117
18117
19117
20117
21106
22106
23106
24106
25106
26106
27106
28106
29106
30106
31106

Hadano weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 98102.39.91.7
Feb / 10711.32.710.71.7
Mar12° / 18616.31.611.72.6
Apr15° / 11°17614.40.312.94.2
May19° / 15°18113.6013.85.5
Jun22° / 19°23115.9014.35.3
Jul25° / 22°20014.7014.15.8
Aug27° / 24°15413.5013.36.0
Sep24° / 21°24115.5012.25.8
Oct20° / 17°26715.5011.15.5
Nov16° / 12°14113.1010.14.5
Dec11° / 9410.90.39.72.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in December, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 36%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25743
35743
45743
55941
65941
76040
86139
96139
106238
116238
126337
136337
146337
156436
166436
176436
186535
196535
206634
216634
226634
236733
246832
256832
266931
276931
286931
296931
307030
317129

Chance of precipitation in December

Any precipitationSnow

Hadano gets around 94 mm of rain and snow over 10.9 wet days in December, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 35% and peaks near 44% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1440
2440
3440
4430
5430
6420
7420
8410
9400
10390
11390
12381
13371
14371
15361
16351
17341
18331
19321
20311
21311
22301
23302
24292
25292
26282
27282
28282
29272
30283
31283

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
4973
5982
6982
7982
8982
9982
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 13 km/h in December.

Across December, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 48 min at the start of December to 9 h 36 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 6:39 AM to 6:57 AM, and sunset from 4:26 PM to 4:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.86:394:26
29.86:404:26
39.86:414:26
49.76:424:26
59.76:434:26
69.76:434:26
79.76:444:26
89.76:454:26
99.76:464:26
109.76:464:27
119.76:474:27
129.76:484:27
139.66:494:27
149.66:494:27
159.66:504:28
169.66:514:28
179.66:514:28
189.66:524:29
199.66:524:29
209.66:534:29
219.66:534:30
229.66:544:30
239.66:544:31
249.66:554:31
259.66:554:32
269.66:554:32
279.66:564:33
289.66:564:34
299.66:564:34
309.66:574:35
319.66:574:36

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.33 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.33 kWh/m² to a high of 5.18 kWh/m² in May across the year — December's 2.33 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.3Moderate
22.3Moderate
32.3Moderate
42.3Moderate
52.3Moderate
62.3Moderate
72.3Moderate
82.3Moderate
92.3Moderate
102.3Moderate
112.3Moderate
122.3Moderate
132.3Moderate
142.3Moderate
152.3Moderate
162.3Moderate
172.4Moderate
182.4Moderate
192.4Moderate
202.4Moderate
212.4Moderate
222.4Moderate
232.4Moderate
242.5Moderate
252.5Moderate
262.5Moderate
272.5Moderate
282.5Moderate
292.5Moderate
302.6Moderate
312.6Moderate
Planning a trip in December

Hazard calendar for Hadano

In seasonPeak

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

Hadano 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 Hadano?

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

2.8
Sightseeing
9th-best month of the year
0.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Hadano.

What to pack for Hadano in December

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

In December, Hadano sees daytime highs around 11°C and nights near 7°C. Pack a warm layer. Worth having: rain gear. About 11 days see rain.

a warm layerrain gear

Sea temperature near Hadano in December

The nearest coast averages about 18°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 29 km away) is warmest in August at about 26°C and coldest in February near 15°C.

It's comfortable for a long swim from May 31 to Nov 26 — about 5.9 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Cool
Mar16Cool
Apr17Cool
May19Cool
Jun21Refreshing
Jul24Refreshing
Aug26Warm
Sep25Warm
Oct23Refreshing
Nov21Refreshing
Dec18Cool

UV index in Hadano 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 Hadano peaks around July 20 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 highExtremeVery highHighModerateJul 20UV 10Dec 23UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May9Very high
Jun9Very high
Jul10Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Hadano 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 Hadano is worst in April — around 26 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1525 µg/m³Dec 1612 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb25Moderate
Mar23Moderate
Apr26Moderate
May21Moderate
Jun18Moderate
Jul13Moderate
Aug12Moderate
Sep12Moderate
Oct14Moderate
Nov14Moderate
Dec12Good
Location & terrain

Where is Hadano?

Hadano sits at 35.4°N, 139.2°E, 103 m above sea level, in Japan. The nearest listed city is Kamiōi, 8.0 km away.

Topography around Hadano

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

Within 3 km, the terrain around Hadano has significant variations in elevation — a maximum elevation change of 285 m around an average of 137 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,659 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,737 m.

The land around Hadano is covered by artificial surfaces (47%) and trees (44%) within 3 km, trees (54%) and artificial surfaces (24%) within 16 km, and trees (46%) and water (30%) within 80 km.

3 km
285 m
16 km
1,659 m
80 km
3,737 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Kamiōi 8.0 km · Ninomiya 8.0 km · Isehara 8.0 km · Kanaishima 10 km · Ōiso 10 km · Hiratsuka 11 km · Minamiashigara 12 km · Odawara 14 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 Hadano (35.3711°, 139.2236°, elevation 103 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).