Kamogawa weather in December

In December, Kamogawa sees average daytime highs of 13°C and overnight lows near 9°C, with 103 mm of rain across 11 wet days and about 9.7 hours of daylight. It is the 9th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 15°C in the first days to 12°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 42 min by month's end. Set against the rest of the year, December is Kamogawa's 1st-clearest and 3rd-windiest month. For the whole year in context, see Kamogawa's year-round climate.

Daytime high
13°
9th warmest
Overnight low
4th coldest
Rainfall
103 mm
11 wet days
Daylight
9 h 36 min
6:46 AM – 4:25 PM
Cloud cover
47%
1st clearest
Wind
25 km/h
3rd windiest
Solar energy
2.29 kWh/m²
Travel score
3.8
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 15°C in the first days to 12°C by the end.

A typical December day in Kamogawa reaches about 13°C in the afternoon and slips back to 9°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 17°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)
11512
21511
31511
41511
51511
61511
71411
81410
91410
101410
111410
121410
131310
141310
15139
16139
17139
18139
19139
20139
21139
22129
23128
24128
25128
26128
27128
28128
29128
30128
31128

Kamogawa weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan11° / 104109.92.6
Feb11° / 10410.710.72.5
Mar13° / 17614.911.73.3
Apr16° / 13°14312.112.94.8
May19° / 17°15811.513.85.9
Jun22° / 20°22013.714.35.7
Jul25° / 23°14911.514.16.5
Aug26° / 25°1039.513.36.7
Sep25° / 23°21114.612.26.0
Oct21° / 18°25314.511.15.9
Nov17° / 14°16013.410.25.2
Dec13° / 103119.73.8

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 17% of December, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25842
35842
45941
56040
66040
76139
86238
96238
106337
116337
126436
136535
146535
156634
166634
176634
186733
196733
206733
216733
226832
236832
246832
256832
266832
276931
286931
296931
306931
316931

Chance of precipitation in December

Any precipitation

Kamogawa gets around 103 mm of rain over 11 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 43% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
143
243
342
442
541
641
740
839
939
1038
1138
1237
1336
1436
1535
1635
1734
1834
1933
2032
2132
2232
2331
2431
2530
2630
2730
2829
2929
3029
3129

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 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19172
29172
39271
49361
59361
69451
79451
89541
99541
109730
119730
129730
139820
149820
159820
169910
179910
189910
199910
209910
219910
229910
239910
249910
259910
269910
2710000
2810000
2910000
3010000
3110000

Wind in December

Winds average 25 km/h in December.

Across December, daily wind ranges from about 24 km/h on the calmest days to 25 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
124breezy
224breezy
324breezy
424breezy
524breezy
624breezy
724breezy
825breezy
925breezy
1025breezy
1125breezy
1225breezy
1325breezy
1425breezy
1525breezy
1625breezy
1725breezy
1825breezy
1925breezy
2025breezy
2125breezy
2225breezy
2325breezy
2425breezy
2525breezy
2625breezy
2725breezy
2825breezy
2925breezy
3025breezy
3125breezy

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 6:35 AM to 6:53 AM, and sunset from 4:24 PM to 4:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.86:354:24
29.86:364:24
39.86:374:23
49.86:384:23
59.86:384:23
69.76:394:23
79.76:404:24
89.76:414:24
99.76:424:24
109.76:424:24
119.76:434:24
129.76:444:24
139.76:444:24
149.76:454:25
159.76:464:25
169.66:464:25
179.66:474:26
189.66:474:26
199.66:484:26
209.66:494:27
219.66:494:27
229.66:504:28
239.66:504:28
249.66:504:29
259.66:514:29
269.66:514:30
279.66:524:30
289.66:524:31
299.76:524:31
309.76:524:32
319.76:534:33

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.29 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.29 kWh/m² to a high of 5.49 kWh/m² in August across the year — December's 2.29 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.3Moderate
22.3Moderate
32.3Moderate
42.2Moderate
52.3Moderate
62.3Moderate
72.3Moderate
82.3Moderate
92.3Moderate
102.3Moderate
112.3Moderate
122.3Moderate
132.3Moderate
142.3Moderate
152.3Moderate
162.3Moderate
172.3Moderate
182.3Moderate
192.3Moderate
202.4Moderate
212.4Moderate
222.4Moderate
232.4Moderate
242.4Moderate
252.4Moderate
262.5Moderate
272.5Moderate
282.5Moderate
292.5Moderate
302.5Moderate
312.5Moderate
Planning a trip in December

Hazard calendar for Kamogawa

In seasonPeak

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

Kamogawa 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 Kamogawa?

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

3.8
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 Kamogawa.

What to pack for Kamogawa in December

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

In December, Kamogawa sees daytime highs around 13°C and nights near 9°C. Worth packing: a warm layer, rain gear and a windbreaker. About 11 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Kamogawa 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 offshore is warmest in August at about 26°C and coldest in February near 16°C.

It's comfortable for a long swim from May 26 to Dec 3 — about 6.3 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan17Cool
Feb16Cool
Mar16Cool
Apr17Cool
May19Cool
Jun22Refreshing
Jul24Refreshing
Aug26Warm
Sep26Warm
Oct23Refreshing
Nov21Refreshing
Dec19Cool

UV index in Kamogawa 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 Kamogawa peaks around August 10 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 highHighModerateAug 10UV 10Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug10Extreme
Sep8Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Kamogawa 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 Kamogawa is worst in April — around 22 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (September, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateApr 1322 µg/m³Sep 911 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar21Moderate
Apr22Moderate
May21Moderate
Jun16Moderate
Jul12Good
Aug11Good
Sep11Good
Oct14Moderate
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Kamogawa?

Kamogawa sits at 35.1°N, 140.1°E, 20 m above sea level, in Japan. The nearest listed city is Minamibōsō, 17 km away.

Topography around Kamogawa

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

Within 3 km, the terrain around Kamogawa has only modest variations in elevation — a maximum elevation change of 242 m around an average of 27 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 404 m; within 80 km, large variations in elevation — a maximum elevation change of 728 m.

The land around Kamogawa is covered by water (41%) and trees (28%) within 3 km, trees (50%) and water (43%) within 16 km, and water (62%) within 80 km.

3 km
242 m
16 km
404 m
80 km
728 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Minamibōsō 17 km · Katsuura 20 km · Tateyama 25 km · Isumi 31 km · Ōhara 31 km · Futtsu 35 km · Kimitsu 35 km · Kisarazu 35 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 Kamogawa (35.0969°, 140.1003°, elevation 20 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).