Iwappara Weather
Weather Forecast for Iwappara ( 400m to 985m 1,312ft to 3,232ft )
This is the Weather Outlook for Iwappara from 17 January.
Updated 16 January 2026 23:16 UTC.
Iwappara Forecast
See below for the detailed long-range forecast, including lowest and highest temperatures, sunshine, cloud cover, wind and rain projections.
Iwappara Weather Forecast updated at 23:16 UTC, next update expected 05:00 UTC.
Long-range Snow Outlook for Iwappara
Snowfall
Snow Line
59cm 23in New Snow
Snow falling to resort level ( 400m 1,312ft ).
There is a useful amount of snow in the long-range forecast (8 to 16 days from today)!
J2Ski - Sign In for a long-range snow forecast, with more weather detail.
Powder Alert!
Powder Alarm issued 17 January 2026 02:19 UTC
Powder Possible :- 30cm 12in of Fresh Snow is forecast for Iwappara over the next 4 days.
*
JMA - at altitude
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Iwappara Daily Weather Forecast Detail
| Base | Snow and Weather | Temp Town | |
|---|---|---|---|
| Sat 17 |  | 1cm New Snow | Max 10℃ 50°F Min -1℃ 30°F |
| Sun 18 |  | 1cm New Snow | Max -1℃ 30°F Min -5℃ 23°F |
| Mon 19 |  | Fair. | Max 2℃ 36°F Min -7℃ 20°F |
| Tue 20 |  | 13cm 5in New Snow | Max -1℃ 31°F Min -9℃ 16°F |
| Wed 21 | | 15cm 6in New Snow | Max -8℃ 18°F Min -9℃ 16°F |
| Thu 22 |  | 21cm 8in New Snow | Max -8℃ 18°F Min -9℃ 16°F |
| Fri 23 | | 8cm 3in New Snow | Max -5℃ 24°F Min -9℃ 16°F |
There is a useful amount of snow in the long-range forecast (8 to 16 days from today)!
J2Ski - Sign In to see the full long-range weather forecast (out to 16 days, with more weather detail).
This Snow Forecast for Iwappara, 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 Iwappara, 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.
Iwappara Weather Forecast updated at 23:16 UTC, next update expected 05:00 UTC.
Current Snow
For current snow depths and skiing conditions, see our Current Snow Report for Iwappara.For more information about this Japanese Ski Resort, See Also Skiing and Snowboarding in Iwappara .
Off-Piste Safety in Iwappara
Before skiing or snowboarding off-piste in Iwappara, you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.