Amami in Winter
In winter (December, January and February), Amami sees average daytime highs around 17°C and overnight lows near 15°C, with 355 mm of rain over about 40 wet days across the season. It is the coldest season of the year and the driest season of the year.
Over the season highs ease from about 20°C in early December to 18°C by late February. The sky is clear or mostly clear about 14% of the time across winter, and the air most often feels dry.
Winter is Amami's weakest season of the year to visit on our travel score. For the whole year in context, see Amami's year-round climate.
- Avg daytime high
- 17°C
- coldest season of the year
- Avg overnight low
- 15°C
- Rainfall
- 355 mm
- 40 wet days
- Avg wind
- 25 km/h
- Travel score
- 5.0
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Amami in Winter
Over the season highs ease from about 20°C in early December to 18°C by late February.
A typical winter day in Amami reaches about 17°C and drops to 15°C overnight. The warmest of the three months is December, the coolest January.
How winter really feels in Amami
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.
Amami 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 | 17° / 15° | 124 | 14.3 | 10.4 | 4.7 |
| Feb | 17° / 15° | 121 | 12.8 | 11 | 4.8 |
| Mar | 19° / 16° | 157 | 14.5 | 11.8 | 5.3 |
| Apr | 21° / 19° | 158 | 13.2 | 12.7 | 5.8 |
| May | 23° / 22° | 210 | 14 | 13.4 | 6.0 |
| Jun | 26° / 25° | 320 | 17.6 | 13.8 | 5.2 |
| Jul | 29° / 27° | 128 | 10.7 | 13.6 | 5.5 |
| Aug | 29° / 27° | 142 | 13.8 | 13 | 5.2 |
| Sep | 28° / 26° | 175 | 15.2 | 12.2 | 5.6 |
| Oct | 25° / 24° | 149 | 12.6 | 11.3 | 6.5 |
| Nov | 22° / 20° | 118 | 10.9 | 10.6 | 6.4 |
| Dec | 19° / 17° | 110 | 12.9 | 10.2 | 5.5 |
Cloud cover in Winter
The sky is clear or mostly clear about 14% of the time across winter.
Chance of precipitation in Winter
Amami gets around 355 mm of rain over 40 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 25 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 18 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 2.5 kWh/m².
Hazard calendar for Amami
In winter, Amami overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Amami sits in the Pacific typhoon belt; the season peaks July–October.
Is winter a good time to visit Amami?
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 Amami for sightseeing.
What to pack for Amami in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Amami sees daytime highs around 17°C and nights near 15°C. Pack rain gear. Worth having: a warm layer and a windbreaker. About 40 days see rain.
Sea temperature near Amami in Winter
The nearest coast averages about 22°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 29°C and coldest in February near 21°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 22 | 21 | 21 | 22 | 24 | 26 | 28 | 29 | 28 | 27 | 25 | 23 |
| Comfort | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm | Tropical | Tropical | Tropical | Warm | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 22 | Refreshing |
| Feb | 21 | Refreshing |
| Mar | 21 | Refreshing |
| Apr | 22 | Refreshing |
| May | 24 | Refreshing |
| Jun | 26 | Warm |
| Jul | 28 | Tropical |
| Aug | 29 | Tropical |
| Sep | 28 | Tropical |
| Oct | 27 | Warm |
| Nov | 25 | Warm |
| Dec | 23 | Refreshing |
UV index in Amami in Winter
Clear-sky midday UV across winter averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Amami peaks around July 14 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 4 (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) | 4 | 6 | 8 | 9 | 9 | 11 | 12 | 10 | 10 | 7 | 6 | 4 |
| Level | Moderate | High | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Very high | High | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 6 | High |
| Mar | 8 | Very high |
| Apr | 9 | Very high |
| May | 9 | Very high |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 10 | Extreme |
| Sep | 10 | Extreme |
| Oct | 7 | Very high |
| Nov | 6 | High |
| Dec | 4 | Moderate |
Air quality in Amami 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 Amami is worst in April — around 17 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (July, 8 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) | 12 | 15 | 17 | 17 | 14 | 9 | 8 | 9 | 9 | 9 | 10 | 10 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 12 | Good |
| Feb | 15 | Moderate |
| Mar | 17 | Moderate |
| Apr | 17 | Moderate |
| May | 14 | Moderate |
| Jun | 9 | Good |
| Jul | 8 | Good |
| Aug | 9 | Good |
| Sep | 9 | Good |
| Oct | 9 | Good |
| Nov | 10 | Good |
| Dec | 10 | Good |
Where is Amami?
Amami sits at 28.4°N, 129.5°E, 21 m above sea level, in Japan. The nearest listed city is Naze, 2.0 km away.
Topography around Amami
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Amami.
Within 3 km, the terrain around Amami has significant variations in elevation — a maximum elevation change of 376 m around an average of 130 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 517 m; within 80 km, large variations in elevation — a maximum elevation change of 682 m.
The land around Amami is covered by trees (82%) within 3 km, water (59%) and trees (39%) within 16 km, and water (95%) 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 Amami (28.3769°, 129.4938°, elevation 21 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.