Karuizawa Snow Forecast - 7 day
Updated 21 September 2026 02:47 PDT
7-Day Snow Forecast for Karuizawa
1-week from 21 September.
For Forecast detail, see below.
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Karuizawa 7-Day Snow Forecast Highlights
When will there be fresh snow in Karuizawa?
| Next Snow? | |
|---|---|
| There is no snow currently in the forecast for Karuizawa. |
7-Day Snow Outlook for Karuizawa
Snowfall
Snow Line
Max 74°F
Min 55°F
Snow unlikely
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Karuizawa 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 71°F
Min 66°F
Valley temperatures from an overnight low of 66°F to daytime highs around 71°F
Temperature at BaseTemp at Base
Mon
21
Snow unlikely
Cloudy first, rain showers then clear spells, clear sky later.
Forecast times for Karuizawa are in Tokyo (Asia/Tokyo) time zone.
Max 74°F
Min 58°F
Valley temperatures from an overnight low of 58°F to daytime highs around 74°F
Temperature at BaseTemp at Base
Tue
22
Snow unlikely
Clear sky early, then fair later.
Forecast times for Karuizawa are in Tokyo (Asia/Tokyo) time zone.
Max 66°F
Min 57°F
Valley temperatures from an overnight low of 57°F to daytime highs around 66°F
Temperature at BaseTemp at Base
Wed
23
Snow unlikely
Fair, clear spells, clear sky later.
Forecast times for Karuizawa are in Tokyo (Asia/Tokyo) time zone.
Max 74°F
Min 56°F
Valley temperatures from an overnight low of 56°F to daytime highs around 74°F
Temperature at BaseTemp at Base
Thu
24
Snow unlikely
Fair, light drizzle, fair later.
Forecast times for Karuizawa are in Tokyo (Asia/Tokyo) time zone.
Max 71°F
Min 55°F
Valley temperatures from an overnight low of 55°F to daytime highs around 71°F
Temperature at BaseTemp at Base
Fri
25
Snow unlikely
Fair, light drizzle, light rain later.
Forecast times for Karuizawa are in Tokyo (Asia/Tokyo) time zone.
Max 63°F
Min 57°F
Valley temperatures from an overnight low of 57°F to daytime highs around 63°F
Temperature at BaseTemp at Base
Sat
26
Snow unlikely
Drizzle early, then light drizzle later.
Forecast times for Karuizawa are in Tokyo (Asia/Tokyo) time zone.
Max 63°F
Min 56°F
Valley temperatures from an overnight low of 56°F to daytime highs around 63°F
Temperature at BaseTemp at Base
Sun
27
Snow unlikely
Light rain, heavy drizzle, light drizzle later.
Forecast times for Karuizawa are in Tokyo (Asia/Tokyo) time zone.
No significant snowfall is forecast for this period.
This Snow Forecast for Karuizawa, 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 Karuizawa, 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.
Karuizawa Snow Forecast updated at 02:47 PDT, next update expected imminently.
Snow Reliability
Karuizawa typically enjoys reliable snow conditions with an average snow depth of 100 cm during peak season. For the latest snow information, including current conditions and snowfall, check J2Ski for updates.