Biwako Valley Snow Forecast - 7 day
Updated 21 March 2026 11:41 NZDT
7-Day Snow Forecast for Biwako Valley
1-week from 20 March.
For Forecast detail, see below.
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Biwako Valley 7-Day Snow Forecast Highlights
When will there be fresh snow in Biwako Valley?
| Next Snow Expected | 20 March |
|---|---|
| Next Snow Amount | 3cm |
| Next 48 Hours | 3cm |
| Next 7 Days | 3cm |
7-Day Snow Outlook for Biwako Valley
Snowfall
Snow Line
Max 8℃
Min -6℃
3cm New Snow
Snow falling to resort level (940m).
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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 5℃
Min -3℃
Freeze-thaw (spring snow) conditions, with valley temperatures cooling to -3℃ and rising to 5℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Fri
20
2cm to 3cm New Snow
Cloudy first, clear sky then heavy snow showers, clear sky later.
Snow falling to resort level (940m).
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
Max 1℃
Min -6℃
Valley temperatures from an overnight low of -6℃ to daytime highs around 1℃
Temperature at BaseTemp at Base
Sat
21
Snow unlikely
Clear sky.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
Max 7℃
Min -4℃
Freeze-thaw (spring snow) conditions, with valley temperatures cooling to -4℃ and rising to 7℃
Temperature at BaseTemp at Base
Sun
22
Snow unlikely
Clear spells, fair, clear sky later.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
Max 8℃
Min 2℃
Valley temperatures from an overnight low of 2℃ to daytime highs around 8℃
Temperature at BaseTemp at Base
Mon
23
Snow unlikely
Clear spells first, fair then light drizzle, light snow later.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
Max 5℃
Min 1℃
Valley temperatures from an overnight low of 1℃ to daytime highs around 5℃
Temperature at BaseTemp at Base
Snowfall
Snow Line
Tue
24
Snow unlikely
Clear spells, fair, light drizzle later.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
Max 6℃
Min 1℃
Valley temperatures from an overnight low of 1℃ to daytime highs around 6℃
Temperature at BaseTemp at Base
Wed
25
Snow unlikely
Drizzle early, then light drizzle later.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
Max 7℃
Min 3℃
Valley temperatures from an overnight low of 3℃ to daytime highs around 7℃
Temperature at BaseTemp at Base
Thu
26
Snow unlikely
Light drizzle first, cloudy then fair, clear sky later.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
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 piste 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 11:41 NZDT, next update expected 17:00 NZDT.
Snow Forecast near Biwako Valley
| Ski Area | 48 Hr | 7 Day | Fr | Sa | Su | Mo | Tu | We | Th |
|---|---|---|---|---|---|---|---|---|---|
| Happo One | 3cm | 10cm | |||||||
| Myoko Suginohara | - | 7cm | |||||||
| Tsugaike Kogen | 2cm | 7cm | |||||||
| Hakuba 47 | 3cm | 6cm | |||||||
| Myoko Ikenotaira | 1cm | 1cm | |||||||
| Togari Onsen | - | 1cm |
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.