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 15 days from 13 March.
Updated 12 March 2025 15:37 PDT.
| Next Snow Expected | 17 March |
|---|---|
| Next Snow Amount | 1in |
| Next 48 Hours | - |
| Next 7 Days | 7in |
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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 45°F
Min 33°F
Valley temperatures from an overnight low of 33°F to daytime highs around 45°F
Temperature at BaseTemp at Base
Thu
13
Snow unlikely
Fair first, clear spells then fair, clear sky 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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| Thu 13 | Fri 14 | Sat 15 | Sun 16 | Mon 17 | Tue 18 | Wed 19 | |
|---|---|---|---|---|---|---|---|
| Wind | SW F2 | SW F4 | NW F3 | NW F2 | |||
| 3,852ft | 45°F
| 41°F
| 36°F
| 42°F
 +1in
| 27°F
 +2in
| 30°F
| 32°F
 +3in
|
| SW F2 | SW F4 | W F3 | NW F2 | ||||
| 3,468ft | 45°F
| 41°F
| 39°F
| 45°F
| 28°F
+1in
| 31°F
| 33°F
+3in
|
| SW F2 | SW F4 | W F3 | NW F2 | ||||
| 3,084ft | 45°F
| 41°F
| 41°F
| 46°F
| 30°F
+1in
| 32°F
| 34°F
+3in
|
| Snow Line | varying 3,212ft | 3,084ft | 3,084ft | 3,084ft | |||
| Max Town | 45°F | 41°F | 41°F | 46°F | 30°F | 32°F | 34°F |
| Min Town | 33°F | 29°F | 31°F | 30°F | 21°F | 24°F | 22°F |
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 45°F
Min 33°F
Valley temperatures from an overnight low of 33°F to daytime highs around 45°F
Temperature at BaseTemp at Base
Thu
13
Snow unlikely
Fair first, clear spells then fair, clear sky later.
Max 41°F
Min 29°F
Freeze-thaw (spring snow) conditions, with valley temperatures cooling to 29°F and rising to 41°F
Temperature at BaseTemp at Base
Fri
14
Snow unlikely
Clear sky early, then fair later.
Max 41°F
Min 31°F
Valley temperatures from an overnight low of 31°F to daytime highs around 41°F
Temperature at BaseTemp at Base
Sat
15
Snow unlikely
Fair, clear spells, light rain later.
Max 46°F
Min 30°F
Freeze-thaw (spring snow) conditions, with valley temperatures cooling to 30°F and rising to 46°F
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Sun
16
up to 1in New Snow
Light rain first, cloudy then light rain, clear spells later.
Snow Line from 3,212ft to resort level.
Max 30°F
Min 21°F
Below freezing at all levels, with valley temperatures as low as 21°F and not getting above 30°F
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Mon
17
1in to 2in New Snow
Snow showers, cloudy, fair later.
Snow falling to resort level.
Max 32°F
Min 24°F
Valley temperatures from an overnight low of 24°F to daytime highs around 32°F
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Tue
18
New Snow
Cloudy first, light snow then fair, clear sky later.
Snow falling to resort level.
Max 34°F
Min 22°F
Freeze-thaw (spring snow) conditions, with valley temperatures cooling to 22°F and rising to 34°F
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Wed
19
3in New Snow
Cloudy first, snow showers then heavy snow showers, clear spells later.
Snow falling to resort level.
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 15:37 PDT, next update expected imminently.
Snow Forecast near Biwako Valley
| Snow Report and Forecast | 48 Hr | Thu | Fri | Sat | Sun | Mon | Tue | Wed | 7 Day |
|---|---|---|---|---|---|---|---|---|---|
| Happo One | 2in | 7in | |||||||
| Hakuba 47 | 2in | 7in | |||||||
| Tsugaike Kogen | 2in | 7in | |||||||
| Myoko Suginohara | 1in | 6in | |||||||
| Myoko Pine Valley | - | 4in | |||||||
| Myoko Ikenotaira | - | 3in | |||||||
| Togari Onsen | - | 1in |
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.