Biwako Valley Snow Forecast - 7 day
Updated 20 September 2026 20:42 PDT
7-Day Snow Forecast for Biwako Valley
1-week from 21 September.
For Forecast detail, see below.
J2Ski - Sign In for a long-range snow forecast, with more weather detail.
Biwako Valley 7-Day 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. |
7-Day Snow Outlook for Biwako Valley
Snowfall
Snow Line
Max 68°F
Min 50°F
Snow unlikely
J2Ski - Sign In for a long-range snow forecast, with more weather detail.
Partner Offers
Biwako Valley Medium-Range (7-Day) Snow Forecast Detail
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.
Max 68°F
Min 64°F
Valley temperatures from an overnight low of 64°F to daytime highs around 68°F
Temperature at BaseTemp at Base
Mon
21
Snow unlikely
Rain showers first, light rain then rain, rain showers later.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
Max 64°F
Min 56°F
Valley temperatures from an overnight low of 56°F to daytime highs around 64°F
Temperature at BaseTemp at Base
Tue
22
Snow unlikely
Clear spells early, then clear sky later.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
Max 68°F
Min 54°F
Valley temperatures from an overnight low of 54°F to daytime highs around 68°F
Temperature at BaseTemp at Base
Wed
23
Snow unlikely
Clear sky, fair, drizzle later.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
Max 61°F
Min 55°F
Valley temperatures from an overnight low of 55°F to daytime highs around 61°F
Temperature at BaseTemp at Base
Thu
24
Snow unlikely
Light drizzle, light rain showers, fair later.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
Max 66°F
Min 50°F
Valley temperatures from an overnight low of 50°F to daytime highs around 66°F
Temperature at BaseTemp at Base
Fri
25
Snow unlikely
Fair first, clear spells then heavy drizzle, drizzle later.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
Max 65°F
Min 57°F
Valley temperatures from an overnight low of 57°F to daytime highs around 65°F
Temperature at BaseTemp at Base
Sat
26
Snow unlikely
Light drizzle, cloudy, light drizzle later.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
Max 66°F
Min 58°F
Valley temperatures from an overnight low of 58°F to daytime highs around 66°F
Temperature at BaseTemp at Base
Sun
27
Snow unlikely
Drizzle early, then light drizzle later.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
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 20:42 PDT, next update expected 02:00 PDT.
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.