Access Road to Ski Portillo in Chile Now Closed For 4 Weeks Straight
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Shiga Kogen-Ichinose Diamond at 1603 m altitude
Issued by Snow-Forecast.com at: 2 pm (local time) / 12 Aug 2026
Now
Next 3 days weather summary:Heavy rain (total 30.0mm), heaviest during Fri afternoon. Warm (max 20°C on Thu afternoon, min 13°C on Wed night). Wind will be generally light. | Days 4-6 weather summary:Moderate rain (total 19.0mm), heaviest on Sat afternoon. Warm (max 21°C on Tue morning, min 13°C on Sun night). Wind will be generally light. | ||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | | |  | |  | | | | | | | | |
light rain | rain shwrs | rain shwrs | t-storm risk | rain shwrs | t-storm risk | t-storm risk | light rain | t-storm risk | mod. rain | rain shwrs | light rain | t-storm risk | rain shwrs | rain shwrs | rain shwrs | rain shwrs | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 3 | 2 | 1 | 2 | 2 | 2 | 10 | 4 | 4 | 7 | 1 | 1 | 4 | 1 | 1 | 2 | 1 |
max °C | 14 | 14 | 19 | 20 | 15 | 20 | 19 | 15 | 18 | 18 | 15 | 18 | 17 | 15 | 20 | 18 | 16 |
min °C | 14 | 13 | 17 | 16 | 14 | 19 | 16 | 15 | 17 | 16 | 14 | 18 | 16 | 13 | 19 | 17 | 15 |
chill °C | 12 | 11 | 17 | 16 | 14 | 19 | 16 | 15 | 17 | 16 | 14 | 18 | 16 | 13 | 19 | 17 | 15 |
Humid % | 93 | 84 | 73 | 62 | 90 | 78 | 81 | 91 | 84 | 86 | 93 | 81 | 89 | 89 | 74 | 83 | 89 |
Freeze m | 4550 | 4700 | 4700 | 4600 | 4700 | 4700 | 4750 | 4800 | 4700 | 4800 | 4800 | 4800 | 4850 | 5050 | 5150 | 5050 | 5350 |
 | — | — | 5:00 | — | — | 5:01 | — | — | 5:01 | — | — | 5:03 | — | — | 5:03 | — | — |
 | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — |
Days 7-16 weather summary:
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Avalanche information: Japan Avalanche Network
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Snow Radar
Latest snow reports near Shiga Kogen-Ichinose Diamond:
Shiga Kogen-Ichinose Diamond 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 2 of August 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-Ichinose Diamond 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-Ichinose Diamond at the specific elevation of 1603 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Shiga Kogen-Ichinose Diamond. 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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