Ibusuki in Winter
In winter (December, January and February), Ibusuki sees average daytime highs around 13°C and overnight lows near 8°C, with 285 mm of rain over about 25 wet days across the season. It is the coldest season of the year and the driest season of the year.
Across winter, daytime highs hold fairly steady around 13°C. The sky is clear or mostly clear about 34% of the time across winter, and the air most often feels dry.
Winter is Ibusuki's weakest season of the year to visit on our travel score. For the whole year in context, see Ibusuki's year-round climate.
- Avg daytime high
- 13°C
- coldest season of the year
- Avg overnight low
- 8°C
- Rainfall
- 285 mm
- 25 wet days
- Avg wind
- 15 km/h
- Travel score
- 4.0
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Ibusuki in Winter
Across winter, daytime highs hold fairly steady around 13°C.
A typical winter day in Ibusuki reaches about 13°C and drops to 8°C overnight. The warmest of the three months is December, the coolest January.
How winter really feels in Ibusuki
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
winter 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 the three winter months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 12° / 7° | 88 | 8.4 | 10.2 | 3.5 |
| Feb | 13° / 7° | 108 | 9 | 10.9 | 3.8 |
| Mar | 16° / 10° | 171 | 12.7 | 11.8 | 4.8 |
| Apr | 20° / 14° | 190 | 11.9 | 12.7 | 5.9 |
| May | 23° / 18° | 210 | 11.9 | 13.6 | 6.4 |
| Jun | 26° / 22° | 469 | 20.3 | 14 | 4.8 |
| Jul | 29° / 25° | 262 | 18.3 | 13.8 | 4.3 |
| Aug | 30° / 26° | 182 | 17.8 | 13.1 | 4.1 |
| Sep | 28° / 23° | 224 | 15 | 12.2 | 5.3 |
| Oct | 24° / 19° | 132 | 9.6 | 11.2 | 7.1 |
| Nov | 19° / 14° | 119 | 8.9 | 10.4 | 6.4 |
| Dec | 15° / 9° | 89 | 7.4 | 10 | 4.8 |
Cloud cover in Winter
The sky is clear or mostly clear about 34% of the time across winter.
Chance of precipitation in Winter
Ibusuki gets around 285 mm of rain over 25 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 15 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 06 min in early December to 11 h 18 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 2.9 kWh/m².
Hazard calendar for Ibusuki
In winter, Ibusuki overlaps 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.
Is winter a good time to visit Ibusuki?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Ibusuki for sightseeing.
What to pack for Ibusuki in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Ibusuki sees daytime highs around 13°C and nights near 8°C. Worth packing: a warm layer and rain gear. About 25 days see rain.
Sea temperature near Ibusuki in Winter
The nearest coast averages about 20°C across winter — 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 19 | 18 | 19 | 20 | 22 | 24 | 27 | 28 | 28 | 26 | 23 | 21 |
| Comfort | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Warm | Tropical | Warm | Warm | Refreshing | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 19 | Cool |
| Feb | 18 | Cool |
| Mar | 19 | Cool |
| Apr | 20 | Cool |
| May | 22 | Refreshing |
| Jun | 24 | Refreshing |
| Jul | 27 | Warm |
| Aug | 28 | Tropical |
| Sep | 28 | Warm |
| Oct | 26 | Warm |
| Nov | 23 | Refreshing |
| Dec | 21 | Refreshing |
UV index in Ibusuki in Winter
Clear-sky midday UV across winter averages 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 3 | 5 | 7 | 8 | 8 | 11 | 11 | 9 | 10 | 7 | 5 | 4 |
| Level | Moderate | High | High | Very high | Very high | Extreme | Extreme | Very high | Extreme | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 5 | High |
| Mar | 7 | High |
| Apr | 8 | Very high |
| May | 8 | Very high |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 9 | Very high |
| Sep | 10 | Extreme |
| Oct | 7 | High |
| Nov | 5 | Moderate |
| Dec | 4 | Moderate |
Air quality in Ibusuki in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 15 | 19 | 22 | 23 | 21 | 17 | 12 | 14 | 12 | 12 | 14 | 13 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 19 | Moderate |
| Mar | 22 | Moderate |
| Apr | 23 | Moderate |
| May | 21 | Moderate |
| Jun | 17 | Moderate |
| Jul | 12 | Moderate |
| Aug | 14 | Moderate |
| Sep | 12 | Moderate |
| Oct | 12 | Moderate |
| Nov | 14 | Moderate |
| Dec | 13 | Moderate |
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.
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
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.