Biwako Valley 48-Hour Snow Forecast
Updated 20 September 2026 11:52 PDT
2-Day Forecast for Biwako Valley
48-hours from 20 September.
See below for forecast detail
Biwako Valley Snow Forecast updated at 11:52 PDT, next update expected 17:00 PDT.
Forecast for today in Biwako Valley
Max 71°F
Min 63°F
Valley temperatures from an overnight low of 63°F to daytime highs around 71°F
Temperature at BaseTemp at Base
Sun
20
Snow unlikely
Cloudy early, then rain showers later.
Forecast times for Biwako Valley are in Tokyo (Asia/Tokyo) time zone.
Forecast for tomorrow in Biwako Valley
Max 67°F
Min 64°F
Valley temperatures from an overnight low of 64°F to daytime highs around 67°F
Temperature at BaseTemp at Base
Mon
21
Snow unlikely
Fair first, rain showers then rain, clear spells 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? | |||
|---|---|---|---|---|---|---|---|
| Sun | 09:00 |  | Fair. | 68°F | SE Light | -125% | |
| Sun | 10:00 | | Clear spells. | 70°F | SE Light | -125% | |
| Sun | 11:00 | | Cloudy. | 71°F | SE Light | -125% | |
| Sun | 12:00 | | Cloudy. | 71°F | SE Light | -125% | |
| Sun | 13:00 | | Cloudy. | 68°F | SE Calm | -125% | |
| Sun | 14:00 |  | Clear spells at altitude. Lt drizzle below. | 65°F | SE Light | -125% | |
| Sun | 15:00 | | Cloudy. | 65°F | SE Light | -125% | |
| Sun | 16:00 | | Cloudy at altitude. Mixed below. | 65°F | SE Light | -125% | |
| Sun | 17:00 | | Cloudy. | 65°F | SE Light | -125% | |
| Sun | 18:00 | | Cloudy. | 65°F | SE Light | -125% | |
| Sun | 19:00 | | Cloudy. | 65°F | SE Light | -125% | |
| Sun | 20:00 | | Clear spells. | 65°F | SE Light | -125% | |
| Sun | 21:00 | | Cloudy. | 64°F | SE Light | -125% | |
| Sun | 22:00 | | Cloudy. | 63°F | SE Light | -125% | |
| Sun | 23:00 | | Cloudy. | 63°F | SE Light | -125% | |
| Mon | 00:00 | | Cloudy. | 65°F | SW Light | -125% | |
| Mon | 01:00 | | Cloudy. | 65°F | SW Light | -125% | |
| Mon | 02:00 | | Cloudy at altitude. Mixed below. | 64°F | SW Light | -125% | |
| Mon | 03:00 | | Cloudy. | 65°F | SW Calm | -125% | |
| Mon | 04:00 | | Clear spells. | 66°F | SW Light | -125% | |
| Mon | 05:00 | | Clear spells at altitude. Fair below. | 66°F | SW Light | -125% | |
| Mon | 06:00 | | Light snow at altitude. Lt rain below. | 65°F | SW Light | -125% | |
| Mon | 07:00 | | Light drizzle. | 66°F | SW Light | -125% | |
| Mon | 08:00 | | Light drizzle. | 66°F | SW Calm | -125% | |
| Mon | 09:00 | | Clear spells. | 67°F | SW Calm | -125% | |
| Mon | 10:00 | | Light snow at altitude. Lt rain below. | 67°F | SW Light | -125% | |
| Mon | 11:00 | | Fair at altitude. Mixed below. | 66°F | SW Light | -125% | |
| Mon | 12:00 | | Cloudy at altitude. Fair below. | 67°F | SW Light | -125% | |
| Mon | 13:00 | | Cloudy at altitude. Fair below. | 66°F | SW Light | -125% | |
| Mon | 14:00 | | Clear spells. | 66°F | SW Light | -125% | |
| Mon | 15:00 | | Cloudy. | 64°F | SW Light | -125% | |
| Mon | 16:00 | | Light snow at altitude. Lt drizzle below. | 65°F | SW Light | -125% | |
| Mon | 17:00 |  | Heavy drizzle. | 65°F | SW Light | -125% | |
| Mon | 18:00 | | Light rain. | 65°F | SW Light | -125% | |
| Mon | 19:00 | | Light rain. | 65°F | SW Light | -125% | |
| Mon | 20:00 | | Rain. | 65°F | SW Light | -125% | |
| Mon | 21:00 | | Rain. | 64°F | SW Breeze | -125% | |
| Mon | 22:00 | | Rain. | 64°F | SW Breeze | -125% | |
| Mon | 23:00 | | Rain. | 64°F | SW Breeze | -125% | |
| Tue | 00:00 | | Rain. | 64°F | W Breeze | -125% | |
| Tue | 01:00 | | Rain. | 63°F | W Breeze | -125% | |
| Tue | 02:00 | | Snow at altitude. Lt rain below. | 62°F | W Breeze | -125% | |
| Tue | 03:00 | | Snow at altitude. Hvy drizzle below. | 62°F | W Breeze | -125% | |
| Tue | 04:00 | | Snow at altitude. Lt rain below. | 61°F | W Light | -125% | |
| Tue | 05:00 | | Light snow at altitude. Lt drizzle below. | 60°F | W Light | -125% | |
| Tue | 06:00 | | Light snow at altitude. Lt rain below. | 60°F | W Light | -125% | |
| Tue | 07:00 | | Cloudy at altitude. Mixed below. | 60°F | W Light | -125% | |
| Tue | 08:00 | | Clear spells. | 60°F | W 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 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.
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.