Numajiri Snow Report and Forecast
Snow Forecast for Numajiri
When will there be fresh snow?
This is the Snow Forecast for Numajiri, Japan for 16 days from 15 June.
Updated 15 June 2025 06:31 UTC.
| Next Snow? | |
|---|---|
| There is no snow currently in the forecast for Numajiri. | |
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For Forecast detail, see below.
For current snow depths and skiing conditions, see our Current Snow Report for Numajiri.
Forecast for today in Numajiri
Max 21℃ 70°F
Min 16℃ 61°F
Valley temperatures from an overnight low of 16℃ 61°F to daytime highs around 21℃ 70°F
Temperature at BaseTemp at Base
Sun
15
Snow unlikely
Clear spells, cloudy, clear spells later.
Numajiri has no new snow forecast in the next 48 hours.
Numajiri Snow Report
| Upper Snow Depths |
| - |
| Lower Snow Depths |
| - |
| Snow Conditions |
| - |
Numajiri 7-Day Snow Forecast Overview
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| Sun 15 | Mon 16 | Tue 17 | Wed 18 | Thu 19 | Fri 20 | Sat 21 | |
|---|---|---|---|---|---|---|---|
| Wind | NW F2 | NW F2 | |||||
| 1,220m 4,003ft | 21℃ 70°F
| 24℃ 74°F
| 25℃ 77°F
 | 26℃ 79°F
| 24℃ 76°F
| 26℃ 79°F
| 20℃ 67°F
 |
| NW F2 | NW F2 | ||||||
| 1,035m 3,396ft | 21℃ 70°F
| 24℃ 74°F
| 25℃ 77°F
| 26℃ 79°F
| 23℃ 74°F
| 24℃ 75°F
| 18℃ 65°F
|
| NW F2 | NW F2 | ||||||
| 850m 2,789ft | 21℃ 70°F
| 24℃ 74°F
| 25℃ 77°F
| 26℃ 79°F
| 26℃ 79°F
| 26℃ 79°F
| 20℃ 67°F
|
| Snow Line | |||||||
| Max Town | 21℃ 70°F | 24℃ 74°F | 25℃ 77°F | 26℃ 79°F | 26℃ 79°F | 26℃ 79°F | 20℃ 67°F |
| Min Town | 16℃ 61°F | 19℃ 67°F | 19℃ 65°F | 18℃ 64°F | 18℃ 65°F | 18℃ 65°F | 18℃ 65°F |
This table shows the average forecast snowfall, the maximum temperature, and expected general weather at resort, lower and upper mountain levels. For daily forecast details, see below.
Numajiri Medium-Range (7-Day) Snow Forecast Detail
Note :- Mountain weather is extremely dynamic; the forecast below will change. Any forecast snow may move forward or back in the forecast, and predicted snowfall depths will be revised in subsequent updates.
Max 21℃ 70°F
Min 16℃ 61°F
Valley temperatures from an overnight low of 16℃ 61°F to daytime highs around 21℃ 70°F
Temperature at BaseTemp at Base
Sun
15
Snow unlikely
Clear spells, cloudy, clear spells later.
Max 24℃ 74°F
Min 19℃ 67°F
Valley temperatures from an overnight low of 19℃ 67°F to daytime highs around 24℃ 74°F
Temperature at BaseTemp at Base
Mon
16
Snow unlikely
Fair, clear spells, fair later.
Max 25℃ 77°F
Min 19℃ 65°F
Valley temperatures from an overnight low of 19℃ 65°F to daytime highs around 25℃ 77°F
Temperature at BaseTemp at Base
Tue
17
Snow unlikely
Clear sky.
Max 26℃ 79°F
Min 18℃ 64°F
Valley temperatures from an overnight low of 18℃ 64°F to daytime highs around 26℃ 79°F
Temperature at BaseTemp at Base
Wed
18
Snow unlikely
Clear sky, clear spells, fair later.
Max 26℃ 79°F
Min 18℃ 65°F
Valley temperatures from an overnight low of 18℃ 65°F to daytime highs around 26℃ 79°F
Temperature at BaseTemp at Base
Thu
19
Snow unlikely
Cloudy, clear spells, clear sky later.
Max 26℃ 79°F
Min 18℃ 65°F
Valley temperatures from an overnight low of 18℃ 65°F to daytime highs around 26℃ 79°F
Temperature at BaseTemp at Base
Fri
20
Snow unlikely
Cloudy early, then fog later.
Max 20℃ 67°F
Min 18℃ 65°F
Valley temperatures from an overnight low of 18℃ 65°F to daytime highs around 20℃ 67°F
Temperature at BaseTemp at Base
Sat
21
Snow unlikely
Rain showers, rain, light rain later.
No significant snowfall is forecast for this period.
This Snow Forecast for Numajiri, Japan gives the predicted Snowfall and Freezing Levels for the next week.
The forecast snowfall depths given are the likely average accumulations for the Lower and Upper slopes. The actual snow depth in Numajiri, on any given piste or itinerary, may be dramatically different, particularly if the snowfall is accompanied by high winds and/or varying air temperatures.
Snow Forecasts beyond two days ahead are subject to significant change and variable reliability.
Numajiri Snow Forecast updated at 06:31 UTC, next update expected 12:00 UTC.
Understanding and predicting Snow Conditions in Numajiri
Here are our tips for making the most of a trip to Numajiri, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Numajiri, but like any mountain, snow conditions change throughout the season, from day to day, and even from hour to hour.
Whether you’re sticking to the marked pistes or venturing off-piste, here’s what you need to know:
Pistes (Groomers) or Off-Piste
These can be a world apart, regarding snow conditions, even ignoring the difference between the natural terrain features to be found off-piste and the generally controlled surfaces and slopes of a pisted (groomed) run.
- Piste Conditions can range from fresh powder to firm, icy surfaces, particularly after warm spells or a busy day on the mountain with the passage of many skiers.
- Off-Piste Conditions are far more variable. Wind and sun can quickly transform fresh snow into wind crust or slushy layers, whilst cold weather can preserve stashes of powder many days after a snowfall.
WARNING - skiing off-piste (out-of-bounds) at Numajiri is uncontrolled and un-marked slopes are not made safe (from avalanche risk) or patrolled. Always check local advice, know the Avalanche Risk Level, ski with safety kit (and know how to use it), and never ski alone.
Analyzing Weather and Snowfall Forecasts
Whilst no forecast can tell you exactly how snow conditions in Numajiri will develop, checking the forecast regularly should give you an idea of what to expect.
New snowfall can bring fresh powder and refresh the surfaces of pisted runs. Powder can be tracked out quickly at busy times, but in less crowded and shaded areas, fresh snow can linger for days.
Changes in weather conditions, such as milder temperatures, rain or wind, can degrade snow quality. Conversely, cold, stable weather can preserve conditions for extended periods.
Predicting Future Snow Quality
Regularly check our snow and weather forecasts for Numajiri for changes that may affect snow quality. Forecast snowfall depth and recent snowfall are good indicators of what to expect.
Use historical data and recent snow reports to understand past snow conditions and anticipate future changes.