Ōwa in Winter
In winter (December, January and February), Ōwa sees average daytime highs around 9°C and overnight lows near 1°C, with 159 mm of precipitation over about 20 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 9°C. The sky is clear or mostly clear about 57% of the time across winter, and the air most often feels dry.
Winter is Ōwa's weakest season of the year to visit on our travel score. For the whole year in context, see Ōwa's year-round climate.
- Avg daytime high
- 9°C
- coldest season of the year
- Avg overnight low
- 1°C
- Precipitation
- 159 mm
- 20 wet days
- Avg wind
- 8 km/h
- Travel score
- 2.1
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Ōwa in Winter
Across winter, daytime highs hold fairly steady around 9°C.
A typical winter day in Ōwa reaches about 9°C and drops to 1°C overnight. The warmest of the three months is December, the coolest January.
How winter really feels in Ōwa
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 75 that feel at or below 0°C.
The story in winter is cold — wind chill drags the overnight "feels like" below the raw low.
Ōwa 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 | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 8° / -0° | 55 | 6.1 | 2 | 9.8 | 1.6 |
| Feb | 9° / 0° | 53 | 6.9 | 2.3 | 10.6 | 2.0 |
| Mar | 13° / 3° | 104 | 11.8 | 1.5 | 11.7 | 3.5 |
| Apr | 18° / 8° | 121 | 12.2 | 0.2 | 12.9 | 5.4 |
| May | 23° / 14° | 153 | 13.7 | 0 | 13.9 | 6.1 |
| Jun | 25° / 18° | 187 | 16.7 | 0 | 14.4 | 5.3 |
| Jul | 29° / 22° | 220 | 18.8 | 0 | 14.2 | 4.3 |
| Aug | 30° / 23° | 171 | 16.4 | 0 | 13.4 | 4.1 |
| Sep | 26° / 20° | 221 | 16.7 | 0 | 12.2 | 5.3 |
| Oct | 21° / 14° | 206 | 13.7 | 0 | 11.1 | 5.9 |
| Nov | 15° / 7° | 83 | 8.6 | 0 | 10.1 | 5.0 |
| Dec | 10° / 2° | 51 | 6.7 | 0.4 | 9.6 | 2.8 |
Cloud cover in Winter
The sky is clear or mostly clear about 57% of the time across winter.
Chance of precipitation in Winter
Ōwa gets around 159 mm of rain and snow over 20 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 8 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 9 h 42 min in early December to 11 h 06 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 Ōwa
None of Ōwa's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Ōwa's rainy season runs March–October, when most of the year's rain falls.
Is winter a good time to visit Ōwa?
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 weaker month for outdoor sightseeing in Ōwa.
What to pack for Ōwa in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Ōwa sees daytime highs around 9°C and nights near 1°C. Pack a warm layer. About 20 days see rain.
UV index in Ōwa in Winter
Clear-sky midday UV across winter averages around 3. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Ōwa peaks around July 16 at about 10 (very high) — 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 4 | 4 | 6 | 8 | 9 | 10 | 9 | 9 | 6 | 3 | 2 |
| Level | Moderate | Moderate | Moderate | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 4 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 9 | Very high |
| Jul | 10 | Very high |
| Aug | 9 | Very high |
| Sep | 9 | Very high |
| Oct | 6 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Moderate |
Air quality in Ōwa 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 Ōwa is worst in April — around 26 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (December, 14 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 | 21 | 25 | 26 | 24 | 20 | 17 | 16 | 16 | 16 | 16 | 14 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 21 | Moderate |
| Mar | 25 | Moderate |
| Apr | 26 | Moderate |
| May | 24 | Moderate |
| Jun | 20 | Moderate |
| Jul | 17 | Moderate |
| Aug | 16 | Moderate |
| Sep | 16 | Moderate |
| Oct | 16 | Moderate |
| Nov | 16 | Moderate |
| Dec | 14 | Moderate |
Where is Ōwa?
Ōwa sits at 36.2°N, 139.5°E, 22 m above sea level, in Japan. The nearest listed city is Hanyū, 5.0 km away.
Topography around Ōwa
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ōwa.
Within 3 km, the terrain around Ōwa has only modest variations in elevation — a maximum elevation change of 17 m around an average of 20 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 286 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,552 m.
The land around Ōwa is covered by cropland (50%) and artificial surfaces (31%) within 3 km, cropland (43%) and artificial surfaces (42%) within 16 km, and trees (54%) and artificial surfaces (25%) 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 Ōwa (36.1994°, 139.4947°, elevation 22 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.