Koumi Riekkusu Ski Valley Weather (Next 3 days): The snow forecast for Koumi Riekkusu Ski Valley is: A light covering of new snow, mostly falling on Wed afternoon. Becoming milder with light rain (total 3.0mm) on Fri afternoon. Freeze-thaw conditions (max 6°C on Fri afternoon, min 0°C on Wed afternoon). Wind will be generally light.
Koumi Riekkusu Ski Valley Weather (Days 4-6): Heavy rain (total 29.0mm), heaviest during Mon night. Mild temperatures (max 9°C on Sun afternoon, min 2°C on Sat night). Wind will be generally light.
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | -1 |  | ||||
| Bottom Lift: | 1 | |
Wed 25 | Thursday 26 | Friday 27 | Saturday 28 | Sunday 29 | Monday 30 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  |  |  | |  | |  |  | |  | | |  | |
light snow | light snow | light snow | light snow | snow shwrs | some clouds | light rain | snow shwrs | cloudy | light rain | rain shwrs | clear | cloudy | light rain | light rain | light rain | mod. rain | |
km/h | |||||||||||||||||
Snow map |  |  |  |  |  |  | |||||||||||
4 | 4 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
— | — | — | — | — | — | 2 | 1 | — | 1 | 1 | — | — | 3 | 4 | 1 | 10 | |
max °C | 1 | 1 | 1 | 1 | 1 | 5 | 6 | 2 | 5 | 7 | 4 | 7 | 9 | 5 | 3 | 4 | 4 |
min °C | 0 | 0 | 1 | 1 | 0 | 2 | 4 | 1 | 3 | 6 | 2 | 4 | 7 | 2 | 2 | 4 | 3 |
-3 | -3 | 1 | 0 | -3 | 2 | 4 | 1 | 2 | 6 | 0 | 4 | 6 | 0 | -1 | 1 | 1 | |
99 | 98 | 98 | 98 | 91 | 66 | 55 | 85 | 67 | 38 | 76 | 57 | 37 | 87 | 99 | 95 | 82 | |
1750 | 1750 | 1750 | 1800 | 1700 | 1950 | 2200 | 1800 | 2000 | 2300 | 2000 | 2200 | 2500 | 2300 | 2050 | 2250 | 2500 | |
 | — | — | 5:41 | — | — | 5:41 | — | — | 5:39 | — | — | 5:37 | — | — | 5:35 | — | — |
 | 6:00 | — | — | 6:01 | — | — | 6:02 | — | — | 6:04 | — | — | 6:05 | — | — | 6:05 | — |
A light covering of new snow, mostly falling on Wed afternoon. Becoming milder with light rain (total 3.0mm) on Fri afternoon. Freeze-thaw conditions (max 6°C on Fri afternoon, min 0°C on Wed afternoon). Wind will be generally light.
Heavy rain (total 29.0mm), heaviest during Mon night. Mild temperatures (max 9°C on Sun afternoon, min 2°C on Sat night). Wind will be generally light.
Latest snow reports near Koumi Riekkusu Ski Valley:
Light rain reported from Karuizawa at 1018 metres elevation 8 kms SE of Asama 2000 Park but it is forecast cold enough for snow at the ski area from Asama 2000 Park
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 18 Mar 2026 |
| Snow Alerts | Create Alert |
0.4 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.6 | Powder days Fresh snow, limited sun, any wind. |
0.8 | 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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