Kobayashi weather in December

In December, Kobayashi sees average daytime highs of 12°C and overnight lows near 2°C, with 78 mm of precipitation across 6.6 wet days and about 9.9 hours of daylight. It is the 10th-warmest and 12th-wettest month of the year here.

Highs ease over the month, from about 14°C in the first days to 11°C by the end. The sky is clear or mostly clear about 45% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 06 min at the start of December to 9 h 54 min by month's end. Set against the rest of the year, December is Kobayashi's 1st-clearest and 5th-windiest month. For the whole year in context, see Kobayashi's year-round climate.

Daytime high
12°
10th warmest
Overnight low
3rd coldest
Precipitation
78 mm
6.6 wet days
Daylight
9 h 54 min
7:15 AM – 5:10 PM
Cloud cover
48%
1st clearest
Wind
7 km/h
5th windiest
Solar energy
2.64 kWh/m²
Travel score
3.6
out of 10

Kobayashi is city in Miyazaki Prefecture, Japan.

Density
78/km²
people per km²
Founded
2006

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 11°C by the end.

A typical December day in Kobayashi reaches about 12°C in the afternoon and slips back to 2°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 16°C. Set against its neighbours, December runs about 5°C cooler than November and about 2°C warmer than January.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1144
2144
3144
4143
5143
6133
7133
8133
9133
10132
11132
12122
13122
14122
15122
16122
17122
18121
19121
20111
21111
22111
23111
24111
25111
26111
27111
28111
29111
30111
31110

How December really feels in Kobayashi

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 20 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
20
wind chill below the day's low

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

Kobayashi 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
Jan10° / 787.30.710.12.4
Feb11° / 1018.70.510.83.0
Mar15° / 15812.70.111.84.3
Apr20° / 18312.3012.85.7
May23° / 14°21212.5013.66.2
Jun25° / 18°46420.6014.14.8
Jul29° / 22°29819.8013.94.0
Aug30° / 23°20519.1013.24.0
Sep27° / 19°22916.2012.25.3
Oct23° / 13°1319.8011.26.9
Nov17° / 1048.2010.45.9
Dec12° / 786.60.19.93.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% 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 38%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36040
46139
56139
66238
76139
86139
96139
106139
116139
126139
136139
146139
156238
166139
176238
186238
196238
206238
216238
226337
236337
246337
256337
266436
276436
286337
296436
306436
316337

Chance of precipitation in December

Any precipitation

Kobayashi gets around 78 mm of rain and snow over 6.6 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 21% and peaks near 27% 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 (%)
127
227
326
426
526
625
724
824
923
1022
1122
1221
1321
1421
1520
1620
1720
1820
1919
2019
2119
2219
2319
2419
2519
2619
2719
2819
2919
3019
3119

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 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19451
29451
39541
49541
59730
69730
79730
89820
99820
109820
119820
129910
139910
149910
159910
169910
179910
189910
199910
209910
2110000
2210000
2310000
2410000
2510000
2610000
2710000
2810000
2910000
3010000
3110000

Wind in December

Winds average 7 km/h in December.

Across December, daily wind ranges from about 6 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 06 min at the start of December to 9 h 54 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 7:04 AM to 7:21 AM, and sunset from 5:08 PM to 5:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.17:045:08
210.07:055:08
310.07:065:08
410.07:065:08
510.07:075:08
610.07:085:08
710.07:095:08
810.07:095:08
910.07:105:08
1010.07:115:08
119.97:125:08
129.97:125:09
139.97:135:09
149.97:135:09
159.97:145:09
169.97:155:10
179.97:155:10
189.97:165:10
199.97:165:11
209.97:175:11
219.97:175:12
229.97:185:12
239.97:185:13
249.97:195:13
259.97:195:14
269.97:205:14
279.97:205:15
289.97:205:15
299.97:215:16
309.97:215:17
319.97:215:17

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.64 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.64 kWh/m² to a high of 4.98 kWh/m² in May across the year — December's 2.64 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.6Moderate
22.6Moderate
32.6Moderate
42.6Moderate
52.6Moderate
62.6Moderate
72.6Moderate
82.6Moderate
92.6Moderate
102.6Moderate
112.6Moderate
122.6Moderate
132.6Moderate
142.6Moderate
152.6Moderate
162.6Moderate
172.6Moderate
182.6Moderate
192.6Moderate
202.6Moderate
212.7Moderate
222.7Moderate
232.7Moderate
242.7Moderate
252.7Moderate
262.7Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in December

Hazard calendar for Kobayashi

In seasonPeak

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

Kobayashi sits in the Pacific typhoon belt; the season peaks July–October.

Kobayashi's rainy season runs May–July, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Kobayashi?

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

3.6
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 Kobayashi.

What to pack for Kobayashi in December

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

In December, Kobayashi sees daytime highs around 12°C and nights near 2°C. Worth packing: a warm layer. About 7 days see rain.

a warm layer

Sea temperature near Kobayashi 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 59 km away) is warmest in August at about 28°C and coldest in February near 16°C.

It's comfortable for a long swim from May 16 to Dec 4 — about 6.7 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan17Cool
Feb16Cool
Mar17Cool
Apr18Cool
May20Refreshing
Jun23Refreshing
Jul26Warm
Aug28Warm
Sep27Warm
Oct24Warm
Nov22Refreshing
Dec19Cool

UV index in Kobayashi in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kobayashi peaks around June 22 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 22UV 11Dec 23UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar7High
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug9Very high
Sep10Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Kobayashi 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 Kobayashi is worst in March — around 26 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (July, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2025 µg/m³Jul 2214 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar26Moderate
Apr23Moderate
May22Moderate
Jun18Moderate
Jul14Moderate
Aug14Moderate
Sep14Moderate
Oct15Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Kobayashi?

Kobayashi sits at 32.0°N, 131.0°E, 205 m above sea level, in Japan. The nearest listed city is Ebino, 15 km away.

Topography around Kobayashi

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

Within 3 km, the terrain around Kobayashi has only modest variations in elevation — a maximum elevation change of 147 m around an average of 203 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,597 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,715 m.

The land around Kobayashi is covered by trees (39%), cropland (33%) and artificial surfaces (27%) within 3 km, trees (81%) within 16 km, and trees (64%) and water (26%) within 80 km.

3 km
147 m
16 km
1,597 m
80 km
1,715 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Ebino 15 km · Miyakonojō 29 km · Mochibaru 29 km · Honjō 33 km · Hitoyoshi 34 km · Kirishima 34 km · Kokubu-matsuki 35 km · Ōkuchi-shinohara 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 Kobayashi (31.9833°, 130.9833°, elevation 205 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).