Fresh Snowfall In the Alps
Ski areas in the Alps are celebrating the first significant fresh snowfall of September, with accumulations of up to 20cm (8") reported.
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Shiga Kogen-Sun Valley at 1560 m altitude
Issued by Snow-Forecast.com at: 2 pm (local time) / 15 Sep 2026
Next 3 days weather summary:Heavy rain (total 73.0mm), heaviest during Wed night. Very mild (max 15°C on Tue afternoon, min 11°C on Wed night). Wind will be generally light. | Days 4-6 weather summary:Heavy rain (total 24.0mm), heaviest during Sat night. Very mild (max 17°C on Sun afternoon, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||
Tue 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | | |  |  |  |  |  | | | | | | |
t-storm risk | heavy rain | light rain | mod. rain | heavy rain | light rain | light rain | some clouds | clear | some clouds | clear | rain shwrs | light rain | heavy rain | light rain | rain shwrs | some clouds | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 12 | 12 | 3 | 10 | 30 | 4 | 2 | — | — | — | — | 1 | 2 | 12 | 5 | 2 | — |
max °C | 15 | 15 | 14 | 13 | 12 | 13 | 13 | 12 | 15 | 15 | 13 | 14 | 14 | 14 | 15 | 17 | 15 |
min °C | 15 | 13 | 14 | 13 | 11 | 11 | 12 | 11 | 13 | 13 | 12 | 14 | 14 | 14 | 14 | 15 | 14 |
chill °C | 15 | 13 | 14 | 13 | 10 | 11 | 12 | 11 | 13 | 13 | 11 | 14 | 14 | 14 | 14 | 15 | 14 |
Humid % | 96 | 98 | 97 | 98 | 94 | 94 | 96 | 89 | 81 | 74 | 60 | 84 | 94 | 92 | 94 | 89 | 89 |
Freeze m | 4450 | 4400 | 4300 | 4350 | 4050 | 4050 | 4000 | 4450 | 4450 | 4550 | 4600 | 4550 | 4550 | 4550 | 4700 | 4850 | 4950 |
 | — | — | 5:28 | — | — | 5:28 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — |
 | 5:53 | — | — | 5:52 | — | — | 5:51 | — | — | 5:50 | — | — | 5:47 | — | — | 5:46 | — |
Days 7-16 weather summary:
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Avalanche information: Japan Avalanche Network
Popular Shiga Kogen-Sun Valley Pages
Snow Radar
Latest snow reports near Shiga Kogen-Sun Valley:
Shiga Kogen-Sun Valley Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 9 May 2026 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Nagano 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. |
Shiga Kogen-Sun Valley Forecast Snowfall
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Other resorts in Japan - Nagano are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Shiga Kogen-Sun Valley at the specific elevation of 1560 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Shiga Kogen-Sun Valley. 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.
Resort name is also written as Shiga Kogen Sun Valley.
Visitor Reviews of Shiga Kogen-Sun Valley
- Shay O'Neill from Australia writes:
Stayed at Villa Alpen (Shiga Kogen Sun Valley): very friendly. The resort, however, is on the edge of Shiga Kogen and takes about 2 hours in lifts to reach the other side. Sun Valley is more suited for beginner/intermediate. Great for kids and wide open slopes. Not many place to buy food. More options for resturants at Ichonise family ski runs. Overall, Shiga Kogen (Shiga Kogen Sun Valley) is a huge place and just great!!!
Visitor Reviews of Shiga Kogen-Sun Valley
Shay O'Neill from Australia writes:
Stayed at Villa Alpen (Shiga Kogen Sun Valley): very friendly. The resort, however, is on the edge of Shiga Kogen and takes about 2 hours in lifts to reach the other side.
Sun Valley is more suited for beginner/intermediate.
Great for kids and wide open slopes.
Not many place to buy food. More options for resturants at Ichonise family ski runs.
Overall, Shiga Kogen (Shiga Kogen Sun Valley) is a huge place and just great!!!
Read 1 more reviews of Shiga Kogen-Sun Valley or submit your own
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