Portillo Storm Snowfall Total Passes 5m / 17 Feet
A snow storm that has now continued for nine days has taken Chilean ski resort Portillo to a snowfall total of 5.2 metres (17 feet) so far, with more snow forecast.
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Koshi Kogen at 392 m altitude
Issued by Snow-Forecast.com at: 2 pm (local time) / 26 Jul 2026
Now
Next 3 days weather summary:Heavy rain (total 57.0mm), heaviest during Wed morning. Warm (max 24°C on Mon morning, min 20°C on Sun night). Wind will be generally light. | Days 4-6 weather summary:Heavy rain (total 25.0mm), heaviest during Wed afternoon. Warm (max 28°C on Sat morning, min 20°C on Wed night). Wind will be generally light. | ||||||||||||||||
Sun 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | |  |  | |  |  | | | | |  | |
mod. rain | rain shwrs | t-storm risk | t-storm risk | rain shwrs | t-storm risk | mod. rain | mod. rain | rain shwrs | rain shwrs | light rain | light rain | light rain | light rain | t-storm risk | t-storm risk | some clouds | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 6 | 6 | 6 | 7 | 6 | 5 | 6 | 7 | 8 | 8 | 4 | 3 | 2 | 4 | 2 | 2 | — |
max °C | 22 | 21 | 24 | 24 | 22 | 23 | 22 | 21 | 23 | 23 | 21 | 23 | 24 | 23 | 27 | 27 | 24 |
min °C | 22 | 20 | 24 | 23 | 21 | 22 | 22 | 21 | 22 | 22 | 20 | 23 | 23 | 23 | 25 | 26 | 23 |
chill °C | 22 | 20 | 24 | 23 | 21 | 22 | 22 | 21 | 22 | 22 | 20 | 23 | 23 | 23 | 25 | 26 | 23 |
Humid % | 91 | 89 | 82 | 83 | 91 | 90 | 91 | 93 | 92 | 84 | 93 | 85 | 86 | 86 | 81 | 73 | 82 |
Freeze m | 4600 | 4550 | 4650 | 4750 | 4700 | 4650 | 4550 | 4700 | 4650 | 4800 | 4800 | 4750 | 4950 | 5100 | 5000 | 5150 | 5200 |
 | — | — | 4:43 | — | — | 4:45 | — | — | 4:45 | — | — | 4:46 | — | — | 4:47 | — | — |
 | 6:58 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — |
Days 7-16 weather summary:
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Avalanche information: Japan Avalanche Network
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Latest snow reports near Koshi Kogen:
Koshi Kogen Snow Conditions
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 12 Mar 2026 |
| Snow Alerts | Create Alert |
Other resorts in Japan - Niigata are reporting: powder (0) / good piste (0)
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Snow History
Week 4 of July 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. |
Koshi Kogen Forecast Snowfall
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Photos of Koshi Kogen
Upload new photo Other resorts in Japan - Niigata are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Koshi Kogen at the specific elevation of 392 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Koshi Kogen. 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.
Visitor Reviews of Koshi Kogen
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