New €155m Les Grands Montets Lift Begins Opening This Winter
Closed since the devastating 2018 fire, the first part of the flagship new Grands Montets lift above Argentière in the Chamonix Valley is set to open this December.
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Iwanai Resort at 365 m altitude
Issued by Snow-Forecast.com at: 2 am (local time) / 19 Sep 2026
Next 3 days weather summary:Some drizzle, heaviest during Sun afternoon. Warm (max 21°C on Mon morning, min 13°C on Mon night). Wind will be generally light. | Days 4-6 weather summary:Light rain (total 2.0mm), mostly falling on Wed night. Very mild (max 19°C on Tue morning, min 10°C on Tue night). Wind will be generally light. | |||||||||||||||||
Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | |  | |  |  |  | | | | | |  | | | | |
cloudy | cloudy | cloudy | cloudy | rain shwrs | cloudy | some clouds | clear | clear | clear | clear | clear | some clouds | cloudy | rain shwrs | rain shwrs | some clouds | cloudy | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — |
max °C | 18 | 18 | 16 | 19 | 19 | 15 | 21 | 19 | 14 | 19 | 18 | 11 | 19 | 18 | 15 | 18 | 18 | 14 |
min °C | 16 | 16 | 15 | 18 | 16 | 14 | 19 | 15 | 13 | 18 | 13 | 10 | 17 | 14 | 12 | 16 | 14 | 13 |
chill °C | 16 | 16 | 15 | 18 | 16 | 14 | 19 | 15 | 13 | 18 | 12 | 10 | 17 | 13 | 11 | 16 | 14 | 13 |
Humid % | 72 | 69 | 83 | 84 | 78 | 90 | 70 | 63 | 88 | 55 | 50 | 78 | 51 | 51 | 73 | 81 | 57 | 78 |
Freeze m | 3750 | 3900 | 4100 | 3900 | 4050 | 4100 | 3850 | 3850 | 3800 | 3650 | 3700 | 3550 | 3450 | 3350 | 3200 | 3350 | 3550 | 3500 |
 | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — |
 | — | 5:42 | — | — | 5:39 | — | — | 5:38 | — | — | 5:37 | — | — | 5:35 | — | — | 5:32 | — |
Days 7-16 weather summary:
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Avalanche information: Japan Avalanche Network
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Latest snow reports near Iwanai Resort:
Iwanai Resort Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 4 May 2026 |
| Snow Alerts | Create Alert |
Other resorts in Japan are reporting: powder (0) / good piste (0)
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Snow History
Week 3 of September has on average:
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.0 | Powder days Fresh snow, limited sun, any wind. |
0.0 | Bluebird days Average snow, mostly sunny, light wind. |
Iwanai Resort Forecast Snowfall
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Photos of Iwanai Resort
Upload new photo Other resorts in Japan are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Iwanai Resort at the specific elevation of 365 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Iwanai Resort. To access the weather forecasts for the other elevations, use the tab navigation above the table. For a wider view of the weather, check out the Weather Map of Japan.
Click here to read further information on freezing levels and how we forecast our temperatures.
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