SeasonScore
Niseko, Japan
Photo: Douglas P Perkins · CC BY 3.0

Japan

Niseko in December

❄️ Snowy winter

Cold and often rainy.

🎒 Pack: winter coat, gloves & hat · compact umbrella or rain jacket

Best months: Sep (9.3), Jul (9.2), May (9.1)

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Why December scores 7.5What goes into the score

How it works
🌡️ 0° / -4°C🌧️ 158 mm💧 dew pt -4°🍃 PM2.5 6
  • Weather comfort5.2
    • !Cold (-0.4°C highs / -4.2°C lows)
    • ✓Comfortable humidity (dew point -4.1°C)
    • !Wet: ~158 mm rain, ~4 heavy-rain days
  • Air quality9.9
    • ✓Good (within WHO guideline) (PM2.5 ~6 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline9.0
    • ·Normal precautions
Compare monthsPut December side by side with another month
DecSep
Score7.5 Very good9.3 Excellent
Season❄️ Snowy winter🍂 Autumn
High / low0° / -4°22° / 15°
Rain158 mm127 mm
Humiditydew pt -4°dew pt 14°
PM2.56 µg/m³6 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast).

Holidays & crowdsDecember 2026

Holiday week

A long local holiday falls this month. Expect crowds at sights, fuller trains and flights, and higher hotel prices on those dates. Book ahead.

  • Year-end & New Year break 29 Dec – 3 Jan

    Most businesses and some attractions close; trains and flights are busy around the start and end. Source: Japan National Tourism Organization

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Explore NisekoEvents, sights, food & souvenirs

Check event dates locally

A ski resort area in western Hokkaido beneath Mt Yōtei, famous for very reliable deep powder snow in winter and outdoor activities in summer.

Events in December
Autumn Foliage SeasonAcross Japan

Koyo maple viewing, especially in Kyoto, Nikko and the Japanese Alps.

Christmas & New Year IlluminationsAcross Japan

City light displays and year-end temple bell-ringing.

Coming up later

Powder snow seasonDate variesUsually January to February

Cold Siberian air brings frequent heavy snowfalls of light, dry powder.

Why go: This is the busiest and most expensive time; book lodging and ski school places early.

Where: Niseko United ski areas

Autumn coloursDate variesUsually early to mid-October

The mountainsides turn red and gold before the first snow.

Why go: A quieter time to visit with clear views; some resort businesses are closed between seasons.

Where: Mt Niseko-Annupuri and around Mt Yōtei