Biwako Valley Long-Range Snow Forecast Updated today
Updated 20 September 2026 11:52 PDT
Long-Range Snow Forecast for Biwako Valley
Long-range (14 to 45 days) from 20 September.
For Forecast detail, see below.
Biwako Valley Snow Forecast Highlights
When will there be fresh snow in Biwako Valley?
| Next Snow? | |
|---|---|
| There is no snow currently in the forecast for Biwako Valley. |
Long-range Snow Outlook for Biwako Valley
Snowfall
Snow Line
Max 71°F
Min 54°F
Snow unlikely
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Biwako Valley Long-Range (2 weeks+) Snow Forecast Outlook
Note :- Mountain weather is extremely dynamic; the forecast below will change. Any forecast snow may move forward or back in the forecast, and predicted snowfall depths will be revised in subsequent updates.
| Base | Snow and Weather | Temp Town | |
|---|---|---|---|
| Sun 20 |  | Cloudy. | Max 71°F Min 63°F |
| Mon 21 |  | Light snow at altitude, light rain below. | Max 67°F Min 64°F |
| Tue 22 | | Clear spells. | Max 64°F Min 56°F |
| Wed 23 |  | Clear sky. | Max 68°F Min 54°F |
| Thu 24 |  | Light drizzle. | Max 64°F Min 58°F |
| Fri 25 | | Fair. | Max 65°F Min 56°F |
| Sat 26 | | Light drizzle. | Max 59°F Min 57°F |
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No significant snowfall is forecast for this period.
This Snow Forecast for Biwako Valley, Japan gives the predicted Snowfall and Freezing Levels for the next week.
The forecast snowfall depths given are the likely average accumulations for the Lower and Upper slopes. The actual snow depth in Biwako Valley, on any given trail or itinerary, may be dramatically different, particularly if the snowfall is accompanied by high winds and/or varying air temperatures.
Snow Forecasts beyond two days ahead are subject to significant change and variable reliability.
Biwako Valley Snow Forecast updated at 11:52 PDT, next update expected 17:00 PDT.
Ensemble forecast for Biwako Valley, Japan at 3,084ft
Daily Mean Temperature (yellow line is control)
Daily Total Precipitation (blue line is control)
Japan Accommodation (Apartments, Chalets, Hotels) Map
Snow Reliability
Biwako Valley typically sees a snow depth of around 1 to 2 meters throughout the season, with reliable snowfall from December to March. For the latest snow conditions, check updates on J2Ski.
Off-Piste Safety in Biwako Valley
Before skiing or snowboarding off-piste in Biwako Valley, you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.