Niseko in December
In December, Niseko averages -1°C (31°F) during the day and -7°C (19°F) at night, with frequent rain — about 27 days of the month see precipitation (110 mm total).
ShoulderConditions are deeply cold — proper winter gear is essential. Expect daily rain or showers, often in heavy bursts.
December is one of the wetter and less comfortable months in Niseko. If your dates are flexible, consider a different time of year.
How December compares to the rest of the year in Niseko
December is one of the coolest months in Niseko (10th of 12) and one of the wettest months (2nd of 12). Daytime temperature runs 12°C below the annual average (11°C). December runs 7°C cooler than November (6°C) and cools 2°C in January (-3°C).
December sunrise & sunset in Niseko
Times shown for Niseko local time (Asia/Tokyo), calculated for the 15th of December. They shift by a few minutes day to day across the month.
Photography light in Niseko — December
Golden-hour and blue-hour windows for the 15th of December, in Niseko's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Niseko in December
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on December's tier (Shoulder) and Niseko's popularity.
Crowds & pricing — December in Niseko
Niseko is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: challenging tourism weather Christmas / New Year travel surge ski-season peak
Sun & mosquito risk — December in Niseko
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
🥶 Bitter cold — Niseko in December
Gear: Snow rare but air is freezing. Insulated coat, hat, and gloves still required — wind chill is the real enemy.
Niseko in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | -3°C / 27°F | -9°C / 16°F | 91 mm | 27 | — |
| February | -1°C / 29°F | -8°C / 17°F | 82 mm | 23 | — |
| March | 4°C / 39°F | -4°C / 25°F | 82 mm | 22 | — |
| April | 10°C / 50°F | 0°C / 32°F | 86 mm | 17 | — |
| May | 17°C / 63°F | 7°C / 45°F | 108 mm | 19 | — |
| June | 20°C / 69°F | 12°C / 53°F | 129 mm | 19 | — |
| July | 25°C / 77°F | 17°C / 62°F | 130 mm | 21 | — |
| August | 25°C / 76°F | 18°C / 64°F | 207 mm | 23 | — |
| September | 21°C / 70°F | 13°C / 55°F | 133 mm | 21 | — |
| October | 14°C / 57°F | 5°C / 42°F | 116 mm | 22 | — |
| November | 6°C / 44°F | -1°C / 31°F | 127 mm | 23 | — |
| December | -1°C / 31°F | -7°C / 19°F | 110 mm | 27 | — |
Other cities with similar December weather
🌍 See the full ranked list of climate twins for Niseko in December →
Frequently asked questions
How hot is Niseko in December?
In December, Niseko averages a high of -1°C (31°F) and a low of -7°C (19°F) — generally cold.
Does it rain a lot in Niseko in December?
December is quite rainy in Niseko, with about 27 rainy days on average.
Is December a good time to visit Niseko?
December is cold but on the rainy side. It suits travelers who are comfortable with cold weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Niseko in December?
Pack heavy winter layers, a coat, hat and gloves, plus a compact umbrella or rain jacket. See the full December packing list for Niseko for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.