Ibusuki weather in December

In December, Ibusuki sees average daytime highs of 15°C and overnight lows near 9°C, with 89 mm of rain across 7.4 wet days and about 10 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 16°C in the first days to 13°C by the end. The sky is clear or mostly clear about 39% 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 10 hours by month's end. Set against the rest of the year, December is Ibusuki's 3rd-clearest and 4th-windiest month. For the whole year in context, see Ibusuki's year-round climate.

Daytime high
15°
10th warmest
Overnight low
3rd coldest
Rainfall
89 mm
7.4 wet days
Daylight
10 hours
7:14 AM – 5:13 PM
Cloud cover
52%
3rd clearest
Wind
15 km/h
4th windiest
Solar energy
2.57 kWh/m²
Travel score
4.8
out of 10

Ibusuki is city in Kagoshima Prefecture, Japan.

Density
262/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 16°C in the first days to 13°C by the end.

A typical December day in Ibusuki reaches about 15°C in the afternoon and slips back to 9°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 19°C. Set against its neighbours, December runs about 5°C cooler than November and about 2°C warmer than January.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11711
21711
31611
41611
51610
61610
71610
81610
91510
10159
11159
12159
13159
14159
15159
16149
17149
18148
19148
20148
21148
22148
23148
24148
25148
26148
27148
28138
29138
30137
31137

How December really feels in Ibusuki

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

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Ibusuki 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 daysDaylight (hours)Travel score
Jan12° / 888.410.23.5
Feb13° / 108910.93.8
Mar16° / 10°17112.711.84.8
Apr20° / 14°19011.912.75.9
May23° / 18°21011.913.66.4
Jun26° / 22°46920.3144.8
Jul29° / 25°26218.313.84.3
Aug30° / 26°18217.813.14.1
Sep28° / 23°2241512.25.3
Oct24° / 19°1329.611.27.1
Nov19° / 14°1198.910.46.4
Dec15° / 897.4104.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 19% of December, with mostly cloudy or overcast conditions the remaining 42%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
25941
35842
45842
55842
65842
75842
85743
95743
105743
115743
125743
135743
145743
155842
165743
175743
185842
195842
205842
215842
225842
235842
245941
255941
265941
275941
285941
295941
305842
315842

Chance of precipitation in December

Any precipitation

Ibusuki gets around 89 mm of rain over 7.4 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 24% and peaks near 28% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
128
228
327
427
527
626
726
826
925
1025
1125
1225
1324
1424
1524
1624
1723
1823
1923
2023
2122
2222
2322
2422
2521
2621
2721
2821
2921
3021
3122

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 91% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1831151
2831151
3851041
4861040
587940
687940
789830
890730
990730
1090730
1192620
1292620
1392620
1492620
1592620
1692620
1792620
1892620
1993610
2093610
2193610
2294510
2394510
2494510
2595500
2695500
2796400
2896400
2996400
3096400
3197300

Wind in December

Winds average 15 km/h in December.

Across December, daily wind ranges from about 14 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
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3016light breeze
3116light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 06 min at the start of December to 10 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 7:04 AM to 7:21 AM, and sunset from 5:11 PM to 5:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.17:045:11
210.17:045:11
310.17:055:11
410.17:065:11
510.17:075:11
610.17:075:11
710.07:085:11
810.07:095:11
910.07:105:11
1010.07:105:11
1110.07:115:12
1210.07:125:12
1310.07:125:12
1410.07:135:12
1510.07:145:13
1610.07:145:13
1710.07:155:13
1810.07:155:14
1910.07:165:14
2010.07:165:14
2110.07:175:15
2210.07:175:15
2310.07:185:16
2410.07:185:16
2510.07:195:17
2610.07:195:17
2710.07:195:18
2810.07:205:19
2910.07:205:19
3010.07:205:20
3110.07:215:20

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.57 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.57 kWh/m² to a high of 5.3 kWh/m² in July across the year — December's 2.57 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
102.5Moderate
112.5Moderate
122.5Moderate
132.5Moderate
142.5Moderate
152.5Moderate
162.5Moderate
172.6Moderate
182.6Moderate
192.6Moderate
202.6Moderate
212.6Moderate
222.6Moderate
232.6Moderate
242.6Moderate
252.6Moderate
262.7Moderate
272.7Moderate
282.7Moderate
292.7Moderate
302.7Moderate
312.7Moderate
Planning a trip in December

Hazard calendar for Ibusuki

In seasonPeak

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

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

Ibusuki's rainy season runs June–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 Ibusuki?

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

4.8
Sightseeing
6th-best month of the year
0.3
Beach & pool
10th-best month of the year

December is a reasonable time to visit Ibusuki for sightseeing.

What to pack for Ibusuki in December

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

In December, Ibusuki sees daytime highs around 15°C and nights near 9°C. Worth packing: a warm layer. About 7 days see rain.

a warm layer

Sea temperature near Ibusuki in December

The nearest coast averages about 21°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 28°C and coldest in February near 18°C.

It's comfortable for a long swim from Apr 17 to Jan 2 — about 8.6 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan19Cool
Feb18Cool
Mar19Cool
Apr20Cool
May22Refreshing
Jun24Refreshing
Jul27Warm
Aug28Tropical
Sep28Warm
Oct26Warm
Nov23Refreshing
Dec21Refreshing

UV index in Ibusuki in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ibusuki peaks around June 22 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 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 11Jan 10UV 3
UV index (midday)Level
Jan3Moderate
Feb5High
Mar7High
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug9Very high
Sep10Extreme
Oct7High
Nov5Moderate
Dec4Moderate

Air quality in Ibusuki 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 Ibusuki is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1423 µg/m³Oct 1012 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb19Moderate
Mar22Moderate
Apr23Moderate
May21Moderate
Jun17Moderate
Jul12Moderate
Aug14Moderate
Sep12Moderate
Oct12Moderate
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Ibusuki?

Ibusuki sits at 31.2°N, 130.7°E, 2 m above sea level, in Japan. The nearest listed city is Minamikyushu, 22 km away.

Topography around Ibusuki

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

Within 3 km, the terrain around Ibusuki has significant variations in elevation — a maximum elevation change of 308 m around an average of 29 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 917 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,640 m.

The land around Ibusuki is covered by water (50%) and trees (28%) within 3 km, water (66%) and trees (27%) within 16 km, and water (66%) and trees (29%) within 80 km.

3 km
308 m
16 km
917 m
80 km
1,640 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Minamikyushu 22 km · Kanoya 25 km · Tarumizu 28 km · Makurazaki 32 km · Kaseda-shirakame 38 km · Kagoshima 38 km · Minamisatsuma 39 km · Ijūin 49 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 Ibusuki (31.2333°, 130.65°, elevation 2 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).