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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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Omote Manza at 1550 m altitude
Issued by Snow-Forecast.com at: 2 pm (local time) / 18 Dec 2025
Now
Thu 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  | | | |  |  |  |  | | | |  | | |
clear | clear | clear | clear | some clouds | clear | clear | some clouds | cloudy | light rain | snow shwrs | snow shwrs | snow shwrs | clear | clear | some clouds | some clouds | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
— | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | |
max °C | -4 | -4 | 2 | 2 | 3 | 6 | 6 | 4 | 6 | 5 | 0 | -4 | -5 | -5 | 1 | 0 | -3 |
min °C | -7 | -6 | 0 | -1 | 0 | 4 | 3 | 3 | 5 | 4 | -5 | -5 | -7 | -6 | -2 | -4 | -4 |
-10 | -6 | -3 | -4 | -4 | 1 | 0 | 0 | 2 | 2 | -12 | -12 | -12 | -6 | -5 | -8 | -8 | |
81 | 43 | 42 | 53 | 37 | 83 | 78 | 81 | 82 | 90 | 97 | 84 | 80 | 38 | 47 | 58 | 65 | |
850 | 750 | 1800 | 2350 | 2550 | 2600 | 2700 | 2850 | 2950 | 2750 | 1250 | 700 | 750 | 650 | 1350 | 1450 | 1150 | |
 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — |
 | 4:31 | — | — | 4:31 | — | — | 4:32 | — | — | 4:32 | — | — | 4:32 | — | — | 4:34 | — |
Next 0-3 days weather summary:
Mostly dry. Freeze-thaw conditions (max 6°C on Sat morning, min -7°C on Thu afternoon). Wind will be generally light.
Next 4-6 days weather summary:
Light rain (total 2.0mm) at first, then becoming colder with a dusting of snow on Sun night. Freeze-thaw conditions (max 5°C on Sun afternoon, min -7°C on Mon afternoon). Wind will be generally light.
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Latest snow reports near Omote Manza:
36 km away from Omote Manza
7 hours ago
Rain and snow or hail reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen Ski Resort from Iizuna Kogen
36 km away from Omote Manza
9 hours agoModerate to heavy freezing rain reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen but it is forecast cold enough for snow at the ski area from Iizuna Kogen
49 km away from Omote Manza
12 hours ago
It is snowing steadily in Ishiuchi Maruyama. from Ishiuchi Maruyama
Omote Manza Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 1 cm |
| Last snowfall: | 17 Dec 2025 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Gunma are reporting: powder (0) / good piste (0)
Snow History
Week 3 of December has on average:
1.5 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
1.5 | Powder days Fresh snow, limited sun, any wind. |
1.0 | Bluebird days Average snow, mostly sunny, light wind. |
Omote Manza Forecast Snowfall
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Other resorts in Japan - Gunma are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Omote Manza at the specific elevation of 1550 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Omote Manza. 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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