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Koumi Riekkusu Ski Valley Weather (Next 3 days): The snow forecast for Koumi Riekkusu Ski Valley is: A dusting of new snow. Temperatures will be below freezing (max -1°C on Tue morning, min -10°C on Mon morning). Winds decreasing (strong winds from the WSW on Tue afternoon, light winds from the WSW by Wed night).
Koumi Riekkusu Ski Valley Weather (Days 4-6): A dusting of new snow. Freeze-thaw conditions (max 2°C on Sat afternoon, min -4°C on Thu morning). Winds decreasing (fresh winds from the W on Thu night, light winds from the W by Sat night).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -10 |  | ||||
| Bottom Lift: | -9 | |
Latest snow reports near Koumi Riekkusu Ski Valley:
Snowing in Karuizawa Snow Park. from Karuizawa Snow Park
Monday 12 | Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | Saturday 17 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
| |  |  | |  | |  | | |  | | | | | | | | |
clear | clear | clear | snow shwrs | snow shwrs | snow shwrs | clear | some clouds | clear | some clouds | cloudy | snow shwrs | clear | clear | clear | clear | clear | clear | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | 1 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max °C | -6 | -4 | -6 | -1 | -2 | -5 | -6 | -5 | -5 | 0 | 0 | -2 | -1 | -1 | -3 | 1 | 2 | 0 |
min °C | -10 | -5 | -6 | -3 | -4 | -9 | -8 | -7 | -7 | -4 | -1 | -3 | -2 | -2 | -4 | -3 | 1 | -1 |
-17 | -11 | -12 | -10 | -13 | -17 | -15 | -13 | -13 | -9 | -7 | -10 | -8 | -7 | -9 | -7 | -1 | -4 | |
59 | 49 | 61 | 80 | 78 | 67 | 63 | 54 | 59 | 46 | 46 | 90 | 71 | 51 | 54 | 42 | 44 | 58 | |
0 | 950 | 150 | 1100 | 1300 | 650 | 400 | 850 | 0 | 900 | 1500 | 1100 | 1350 | 1450 | 600 | 1150 | 1850 | 1350 | |
 | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — |
 | — | 4:51 | — | — | 4:52 | — | — | 4:52 | — | — | 4:53 | — | — | 4:54 | — | — | 4:55 | — |
A dusting of new snow. Temperatures will be below freezing (max -1°C on Tue morning, min -10°C on Mon morning). Winds decreasing (strong winds from the WSW on Tue afternoon, light winds from the WSW by Wed night).
A dusting of new snow. Freeze-thaw conditions (max 2°C on Sat afternoon, min -4°C on Thu morning). Winds decreasing (fresh winds from the W on Thu night, light winds from the W by Sat night).
Latest snow reports near Koumi Riekkusu Ski Valley:
Snowing in Karuizawa Snow Park. from Karuizawa Snow Park
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 10 cm |
| Last snowfall: | 11 Jan 2026 |
| Snow Alerts | Create Alert |
0.8 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.6 | Powder days Fresh snow, limited sun, any wind. |
3.7 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Koumi Riekkusu Ski Valley at the specific elevation of 1590 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Koumi Riekkusu Ski 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.
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