Oze Iwakura Snow Forecast
It's the early-season stretch at Oze Iwakura, when every storm counts. 7 cm is lined up for the next 3 days, so keep an eye on tomorrow night. It's borderline low down, so the higher slopes get the good stuff.

Snow Trend
24 Hour Forecast
10 day forecast
A typical season at Oze Iwakura
Oze Iwakura is outside its usual snow season right now.
A typical season here runs December to March, peaking in January, with around 9m of snow in total.
- Average season
- ~9m of snow
- Snowiest month
- January (215–370cm)
- Usual season
- December to March, peaking in January
- Base to summit
- 1006m – 1700m (694m vertical)
That makes Oze Iwakura the 5th snowiest of 17 Gunma resorts we have reviewed.
Month by month
Estimated cumulative fresh snowfall at major on-mountain ski areas; actual totals vary substantially by resort, elevation, measurement location, and season.
Forecast tips for Oze Iwakura
Start with the upper-mountain wind and cloud line. Here, a cold front pushing across the divide is the pattern to watch, so the useful question is how cold and calm the next window stays. With a 1010 to 1700 metre elevation band and 690 metres of vertical, the bigger vertical gives you room to move higher when the lower runs soften. A seasonal baseline around 9 metres means small clean refills matter more than waiting for a giant number. The swing variable is whether the upper lift can run with enough visibility to make the top worth using. With patrol boundaries in play, focus on how the inbounds snow will hold through the first half of the day. Chase it after a cold storm only if the wind eases; if the top is socked in, wait for the next clear window.
Nearby forecasts
The closest resort we've reviewed is Katashina Kogen, 1km SE, topping out at 1,250m. When a storm misses Oze Iwakura, check these first.