Niseko weather in December
December in Niseko: freezing, a little rain, with clean air — fine if you can take 19 rainy days.
#3 of 12 months in Niseko · #166 of 897 destinations to visit in December · comfort 85/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Niseko in December
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Niseko climate normals — December
| Daytime high | -1°C / 31°F | 🥶 freezing |
|---|---|---|
| Nighttime low | -6°C / 21°F | |
| Rainfall | 74 mm / 2.9 in | 🌦 some rain |
| Rainy days | 19 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | -6°C / 21°F | |
| Sunshine | 6.2 h/day | |
| Daylight | 9.1 h | |
| Wind | 16 km/h / 10 mph | |
| Snowfall | 54.3 cm / 21.4 in | |
| Air quality (US AQI) | 36 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Niseko in December — FAQ
- Is December a good time to visit Niseko?
- December in Niseko: freezing, a little rain, with clean air — fine if you can take 19 rainy days. It ranks #3 of 12 months for Niseko on SeasonMap's comfort score (85/100).
- What is the weather like in Niseko in December?
- In December, Niseko averages a daily high of -0.6°C and a low of -6.3°C, with about 74.1 mm of rain over roughly 18.6 rainy days.
- What is the air quality in Niseko in December?
- Niseko has a mean US Air Quality Index of about 36 in December.
- Does it snow in Niseko in December?
- Niseko sees roughly 54.3 cm of snowfall in December.