Next 4 days weather summary:Heavy rain (total 25.0mm), heaviest during Mon afternoon. Very mild (max 17°C on Mon morning, min 9°C on Mon night). Winds decreasing (strong winds from the W on Mon night, light winds from the SSW by Wed afternoon). | Days 5-7 weather summary:Heavy rain (total 40.0mm), heaviest during Thu morning. Very mild (max 12°C on Thu morning, min 6°C on Thu night). Winds decreasing (strong winds from the W on Thu night, light winds from the WSW by Sat afternoon). | |||||||||||||||
Monday 28 | Tuesday 29 | Wednesday 30 | Thursday 1 | Friday 2 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  | |  |  |  |  |  | | | | | | |
light rain | t-storm risk | mod. rain | mod. rain | light rain | light rain | rain shwrs | rain shwrs | some clouds | some clouds | heavy rain | rain shwrs | rain shwrs | rain shwrs | light rain | light rain | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 1 | 2 | 6 | 7 | 4 | 2 | 2 | 1 | — | — | 16 | 5 | 6 | 4 | 2 | 4 |
max °C | 14 | 17 | 15 | 11 | 10 | 10 | 9 | 12 | 12 | 11 | 12 | 8 | 8 | 7 | 7 | 6 |
min °C | 13 | 15 | 14 | 9 | 10 | 9 | 9 | 11 | 11 | 10 | 10 | 7 | 6 | 7 | 6 | 6 |
chill °C | 12 | 13 | 12 | 5 | 7 | 6 | 7 | 9 | 10 | 8 | 7 | 4 | 1 | 2 | 2 | 2 |
Humid % | 85 | 89 | 95 | 96 | 92 | 85 | 83 | 77 | 74 | 62 | 96 | 90 | 67 | 65 | 63 | 84 |
Freeze m | 3300 | 3450 | 3400 | 2850 | 2350 | 2750 | 2800 | 3100 | 3200 | 3100 | 3200 | 2850 | 1800 | 1550 | 1600 | 1550 |
 | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:35 | — | — |
 | — | — | 5:25 | — | — | 5:23 | — | — | 5:22 | — | — | 5:21 | — | — | 5:19 | — |
SnowPro
Hourly & 16-day forecastsView past weatherFast, ad-free browsingSnow hindcasts & HistoryAvalanche information: Japan Avalanche Network
Latest snow reports near Iwanai Resort:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 4 May 2026 |
| Snow Alerts | Create Alert |
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. |
The above table gives the weather forecast for Iwanai Resort at the specific elevation of 764 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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