Biwako Valley Snow Report and Forecast
Snow Forecast for Biwako Valley
When will there be fresh snow?
This is the Snow Forecast for Biwako Valley, Japan for 16 days from 9 May.
Updated 10 May 2025 02:31 NZST.
| Next Snow? | |
|---|---|
| There is no snow currently in the forecast for Biwako Valley. | |
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For Forecast detail, see below.
For current snow depths and skiing conditions, see our Current Snow Report for Biwako Valley.
Forecast for today in Biwako Valley
Max 21℃
Min 13℃
Valley temperatures from an overnight low of 13℃ to daytime highs around 21℃
Temperature at BaseTemp at Base
Fri
09
Snow unlikely
Clear spells, cloudy, light drizzle later.
Biwako Valley has no new snow forecast in the next 48 hours.
Biwako Valley Snow Report
| Upper Snow Depths |
| - |
| Lower Snow Depths |
| - |
| Snow Conditions |
| - |
Biwako Valley 7-Day Snow Forecast Overview
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| Fri 09 | Sat 10 | Sun 11 | Mon 12 | Tue 13 | Wed 14 | Thu 15 | |
|---|---|---|---|---|---|---|---|
| Wind | SW F2 | SW F3 | |||||
| 1,174m | 21℃
 | 27℃
 | 15℃
| 13℃
| 17℃
| 18℃
| 19℃
|
| SW F2 | SW F3 | ||||||
| 1,057m | 21℃
| 27℃
| 15℃
| 13℃
| 17℃
| 18℃
| 19℃
|
| SW F2 | SW F3 | ||||||
| 940m | 21℃
| 27℃
| 15℃
| 13℃
| 18℃
| 19℃
| 20℃
|
| Snow Line | |||||||
| Max Town | 21℃ | 27℃ | 15℃ | 13℃ | 18℃ | 19℃ | 20℃ |
| Min Town | 13℃ | 11℃ | 10℃ | 9℃ | 13℃ | 14℃ | 13℃ |
This table shows the average forecast snowfall, the maximum temperature, and expected general weather at resort, lower and upper mountain levels. For daily forecast details, see below.
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 21℃
Min 13℃
Valley temperatures from an overnight low of 13℃ to daytime highs around 21℃
Temperature at BaseTemp at Base
Fri
09
Snow unlikely
Clear spells, cloudy, light drizzle later.
Max 27℃
Min 11℃
Valley temperatures from an overnight low of 11℃ to daytime highs around 27℃
Temperature at BaseTemp at Base
Sat
10
Snow unlikely
Cloudy first, fair then clear spells, fair later.
Max 15℃
Min 10℃
Valley temperatures from an overnight low of 10℃ to daytime highs around 15℃
Temperature at BaseTemp at Base
Sun
11
Snow unlikely
Fair, cloudy, fair later.
Max 13℃
Min 9℃
Valley temperatures from an overnight low of 9℃ to daytime highs around 13℃
Temperature at BaseTemp at Base
Mon
12
Snow unlikely
Fair, fog, cloudy later.
Max 18℃
Min 13℃
Valley temperatures from an overnight low of 13℃ to daytime highs around 18℃
Temperature at BaseTemp at Base
Tue
13
Snow unlikely
Clear spells, fair, cloudy later.
Max 19℃
Min 14℃
Valley temperatures from an overnight low of 14℃ to daytime highs around 19℃
Temperature at BaseTemp at Base
Wed
14
Snow unlikely
Cloudy.
Max 20℃
Min 13℃
Valley temperatures from an overnight low of 13℃ to daytime highs around 20℃
Temperature at BaseTemp at Base
Thu
15
Snow unlikely
Cloudy early, then clear spells later.
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.
Biwako Valley Snow Forecast updated at 02:31 NZST, next update expected 08:00 NZST.
Understanding and predicting Snow Conditions in Biwako Valley
Here are our tips for making the most of a trip to Biwako Valley, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Biwako Valley, but like any mountain, snow conditions change throughout the season, from day to day, and even from hour to hour.
Whether you’re sticking to the marked pistes or venturing off-piste, here’s what you need to know:
Pistes (Groomers) or Off-Piste
These can be a world apart, regarding snow conditions, even ignoring the difference between the natural terrain features to be found off-piste and the generally controlled surfaces and slopes of a pisted (groomed) run.
- Piste Conditions can range from fresh powder to firm, icy surfaces, particularly after warm spells or a busy day on the mountain with the passage of many skiers.
- Off-Piste Conditions are far more variable. Wind and sun can quickly transform fresh snow into wind crust or slushy layers, whilst cold weather can preserve stashes of powder many days after a snowfall.
WARNING - skiing off-piste (out-of-bounds) at Biwako Valley is uncontrolled and un-marked slopes are not made safe (from avalanche risk) or patrolled. Always check local advice, know the Avalanche Risk Level, ski with safety kit (and know how to use it), and never ski alone.
Analyzing Weather and Snowfall Forecasts
Whilst no forecast can tell you exactly how snow conditions in Biwako Valley will develop, checking the forecast regularly should give you an idea of what to expect.
New snowfall can bring fresh powder and refresh the surfaces of pisted runs. Powder can be tracked out quickly at busy times, but in less crowded and shaded areas, fresh snow can linger for days.
Changes in weather conditions, such as milder temperatures, rain or wind, can degrade snow quality. Conversely, cold, stable weather can preserve conditions for extended periods.
Predicting Future Snow Quality
Regularly check our snow and weather forecasts for Biwako Valley for changes that may affect snow quality. Forecast snowfall depth and recent snowfall are good indicators of what to expect.
Use historical data and recent snow reports to understand past snow conditions and anticipate future changes.