Niseko weather
11-year climate averages (2015–2025), month by month
Niseko in september
Current month averages, based on 11 complete years of records (2015–2025). Read the full guide →
Niseko sits at 42°48′N 140°41′E in Japan, in Asia. Its climate profile is shaped by these coordinates — and the 11 complete years of records below (2015–2025) reveal exactly how each season feels on the ground.
Below, you'll find monthly averages for temperature, rainfall and sunshine, drawn from the Open-Meteo Archive. Every month links to a full guide with what to pack, where to stay, and when to arrive.
The year in weather
Niseko weather by month
Pick a month for the full climate guide — temperature, rainfall, sunshine, packing tips and hotel deals for Niseko.
Places that feel like Niseko in september
Niseko weather — FAQ
Q01What is the hottest month in Niseko?
What is the hottest month in Niseko?
August runs the highest averages in Niseko, with typical daytime highs of 25°C (77°F). Plan around midday and consider accommodation with reliable cooling.
Q02What is the coldest month in Niseko?
What is the coldest month in Niseko?
January brings the lowest averages, with daytime highs near -2°C (28°F). Layer up and expect shorter daylight hours if you plan sightseeing.
Q03Which month has the most rain in Niseko?
Which month has the most rain in Niseko?
August typically records the highest monthly rainfall — around 197mm on average. Plan indoor alternatives and pack proper rain gear if visiting this month.
Q04What is the climate like in Niseko?
What is the climate like in Niseko?
Niseko, Japan has mild summers, freezing winters, moderate seasonal rainfall. You can read the detailed month-by-month breakdown on this page.