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Japan Weekly Snow Roundup #293
Weekly Snow News for Japan, updated 17 December 2025: Siberian cold fuels relentless powder storms, with Hokkaido leading Japan’s mid-winter surge.
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Iwanai Resort at 764 m altitude
Issued by Snow-Forecast.com at: 8 am (local time) / 19 Dec 2025
Now
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  | | | | | |  | |  | | | | |
clear | cloudy | light snow | cloudy | light rain | light rain | light snow | light snow | light snow | light snow | light snow | light snow | some clouds | some clouds | cloudy | light snow | light snow | light snow | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | 5 | 2 | 3 | 3 | — | — | — | — | — | 2 | 1 | 2 | |
— | — | 3 | — | 2 | 3 | — | — | — | — | — | — | — | — | — | 5 | 4 | — | |
max °C | -2 | -2 | 3 | 4 | 3 | 3 | 1 | -2 | -6 | -8 | -8 | -8 | -4 | -4 | 1 | 2 | 4 | -3 |
min °C | -3 | -2 | 0 | 3 | 3 | 2 | -1 | -5 | -9 | -8 | -8 | -9 | -6 | -4 | -3 | 1 | 1 | -11 |
-8 | -8 | -6 | -3 | -3 | -3 | -6 | -10 | -18 | -16 | -14 | -15 | -10 | -7 | -8 | -6 | -6 | -22 | |
59 | 82 | 97 | 88 | 96 | 99 | 99 | 97 | 86 | 88 | 80 | 82 | 56 | 49 | 61 | 98 | 98 | 92 | |
0 | 400 | 1150 | 1350 | 1550 | 1800 | 1450 | 300 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1350 | 1600 | 0 | |
 | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — |
 | — | 4:05 | — | — | 4:05 | — | — | 4:05 | — | — | 4:06 | — | — | 4:06 | — | — | 4:07 | — |
Next 0-3 days weather summary:
Mild at first with light rain (total 8.0mm) on Fri night followed by colder weather and light fall of snow, heaviest on Sun morning. Freeze-thaw conditions (max 4°C on Sat morning, min -9°C on Sun night). Winds decreasing (strong winds from the WSW on Fri night, light winds from the SW by Sun morning).
Next 4-6 days weather summary:
A light covering of new snow, mostly falling on Mon morning. Becoming milder with light rain (total 9.0mm) on Wed morning. Freeze-thaw conditions (max 4°C on Wed afternoon, min -11°C on Wed night). Winds increasing (light winds from the SW on Tue morning, near gales from the SSW by Wed afternoon).
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Latest snow reports near Iwanai Resort:
17 km away from Iwanai Resort
5 hours ago
Freezing rain reported from Kutchan at 179 metres elevation only 4 kms E of Niseko Hanazono Resort but it is forecast cold enough for snow at the ski area from Niseko Hanazono Resort
Iwanai Resort Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 17 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
0.3 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
6.2 | 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 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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