Biwako Valley 48-Hour Snow Forecast
Updated 21 September 2026 10:43 CDT
2-Day Forecast for Biwako Valley
48-hours from 21 September.
See below for forecast detail
Biwako Valley Snow Forecast updated at 10:43 CDT, next update expected 16:00 CDT.
Forecast for today in Biwako Valley
Max 20℃
Min 17℃
Valley temperatures from an overnight low of 17℃ to daytime highs around 20℃
Temperature at BaseTemp at Base
Mon
21
Snow unlikely
Clear spells first, rain showers then rain, fair later.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
Forecast for tomorrow in Biwako Valley
Max 17℃
Min 13℃
Valley temperatures from an overnight low of 13℃ to daytime highs around 17℃
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.
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48-hour Forecast Detail
| Base | Snow to | Weather | Temp Town | Rain or Snow? | |||
|---|---|---|---|---|---|---|---|
| Mon | 09:00 | | Fair. | 19℃ | SW Light | -125% | |
| Mon | 10:00 | | Clear spells. | 20℃ | SW Light | -125% | |
| Mon | 11:00 | | Clear spells. | 20℃ | SW Light | -125% | |
| Mon | 12:00 |  | Cloudy. | 18℃ | SW Light | -125% | |
| Mon | 13:00 |  | Light drizzle. | 18℃ | SW Light | -125% | |
| Mon | 14:00 | | Light drizzle. | 17℃ | SW Light | -125% | |
| Mon | 15:00 | | Light snow at altitude. Drizzle below. | 18℃ | SW Light | -125% | |
| Mon | 16:00 | | Heavy snow showers at altitude. Lt rain below. | 18℃ | SW Light | -125% | |
| Mon | 17:00 | | Rain. | 18℃ | SW Light | -125% | |
| Mon | 18:00 | | Light rain. | 18℃ | SW Light | -125% | |
| Mon | 19:00 | | Heavy snow showers at altitude. Lt rain below. | 18℃ | SW Light | -125% | |
| Mon | 20:00 | | Rain. | 18℃ | SW Breeze | -125% | |
| Mon | 21:00 | | Rain. | 18℃ | SW Breeze | -125% | |
| Mon | 22:00 | | Rain. | 18℃ | SW Breeze | -125% | |
| Mon | 23:00 | | Rain. | 17℃ | SW Breeze | -125% | |
| Tue | 00:00 | | Rain. | 17℃ | SW Breeze | -125% | |
| Tue | 01:00 | | Rain. | 17℃ | SW Light | -125% | |
| Tue | 02:00 | | Rain. | 16℃ | SW Light | -125% | |
| Tue | 03:00 | | Snow at altitude. Lt rain below. | 16℃ | SW Light | -125% | |
| Tue | 04:00 | | Light snow at altitude. Lt drizzle below. | 15℃ | SW Light | -125% | |
| Tue | 05:00 | | Cloudy at altitude. Mixed below. | 15℃ | SW Light | -125% | |
| Tue | 06:00 | | Cloudy at altitude. Mixed below. | 15℃ | SW Light | -125% | |
| Tue | 07:00 | | Cloudy at altitude. Fair below. | 15℃ | SW Light | -125% | |
| Tue | 08:00 | | Cloudy at altitude. Mixed below. | 16℃ | SW Light | -125% | |
| Tue | 09:00 | | Cloudy at altitude. Fair below. | 16℃ | SW Light | -125% | |
| Tue | 10:00 | | Clear spells. | 17℃ | SW Light | -125% | |
| Tue | 11:00 | | Clear spells. | 17℃ | SW Light | -125% | |
| Tue | 12:00 | | Clear spells. | 17℃ | SW Light | -125% | |
| Tue | 13:00 | | Clear spells. | 17℃ | SW Light | -125% | |
| Tue | 14:00 | | Clear spells. | 17℃ | SW Light | -125% | |
| Tue | 15:00 | | Clear spells. | 16℃ | SW Light | -125% | |
| Tue | 16:00 | | Clear spells. | 16℃ | SW Light | -125% | |
| Tue | 17:00 | | Fair. | 15℃ | SW Light | -125% | |
| Tue | 18:00 | | Fair at altitude. Clear below. | 14℃ | SW Light | -125% | |
| Tue | 19:00 | | Clear sky. | 14℃ | SW Light | -125% | |
| Tue | 20:00 | | Clear sky. | 13℃ | SW Light | -125% | |
| Tue | 21:00 | | Clear sky. | 13℃ | SW Light | -125% | |
| Tue | 22:00 | | Clear sky. | 14℃ | SW Light | -125% | |
| Tue | 23:00 | | Clear sky. | 13℃ | SW Light | -125% | |
| Wed | 00:00 | | Clear sky. | 13℃ | SW Light | -125% | |
| Wed | 01:00 | | Clear sky. | 13℃ | SW Light | -125% | |
| Wed | 02:00 | | Clear sky. | 13℃ | SW Light | -125% | |
| Wed | 03:00 | | Clear sky. | 13℃ | SW Light | -125% | |
| Wed | 04:00 | | Clear sky. | 13℃ | SW Light | -125% | |
| Wed | 05:00 | | Clear sky. | 13℃ | SW Light | -125% | |
| Wed | 06:00 | | Clear sky. | 13℃ | SW Light | -125% | |
| Wed | 07:00 | | Clear sky. | 15℃ | SW Light | -125% | |
| Wed | 08:00 | | Clear sky. | 17℃ | SW Light | -125% | |
Snow Forecast near Biwako Valley
Snow forecasts for nearby ski areas.
Snow Forecasts for other Ski Resorts near Biwako Valley are not available.
Biwako Valley Snow
For current snow depths and skiing conditions, see our Current Snow Report for Biwako Valley.
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 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.
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.