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Karuizawa 7-Day Snow Forecast - 21st March 2026

Karuizawa Snow Forecast - 7 day

ECMWF IFS
GFS
JMA

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Updated 21 March 2026 16:11 IST

7-Day Snow Forecast for Karuizawa

1-week from 21 March.

For Forecast detail, see below.

Karuizawa 7-Day Snow Forecast Highlights

When will there be fresh snow in Karuizawa?

Karuizawa Snow Forecast Highlights - JMA
Snowfall prediction at mid-mountain (1,048m)
Next Snow?
There is no snow currently in the forecast for Karuizawa.

7-Day Snow Outlook for Karuizawa

 
Snowfall

 
Snow Line

Max 12℃
Min -2℃

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 7℃
Min -1℃

Valley temperatures from an overnight low of -1℃ to daytime highs around 7℃
Freeze-thaw from mid-mountain up.

Temperature at BaseTemp at Base

Sat
21

Snow unlikely

ClearClearClearClear

Clear sky.

Forecast times for Karuizawa are in Tokyo (Asia/Tokyo) time zone.

Max 8℃
Min -2℃

Freeze-thaw conditions, with valley temperatures cooling to -2℃ and rising to 8℃

Temperature at BaseTemp at Base

Sun
22

Snow unlikely

MixedFairFairClear

Clear spells, fair, clear sky later.

Forecast times for Karuizawa are in Tokyo (Asia/Tokyo) time zone.

Max 12℃
Min 3℃

Valley temperatures from an overnight low of 3℃ to daytime highs around 12℃

Temperature at BaseTemp at Base

Mon
23

Snow unlikely

ClearShwrsClearClear

Clear sky, rain showers, clear sky later.

Forecast times for Karuizawa are in Tokyo (Asia/Tokyo) time zone.

Max 11℃
Min 0℃

Valley temperatures from an overnight low of 0℃ to daytime highs around 11℃
Freeze-thaw conditions up high.

Temperature at BaseTemp at Base

Tue
24

Snow unlikely

ClearMixedCloudCloud

Clear sky, clear spells, cloudy later.

Forecast times for Karuizawa are in Tokyo (Asia/Tokyo) time zone.

Max 8℃
Min 2℃

Valley temperatures from an overnight low of 2℃ to daytime highs around 8℃

Temperature at BaseTemp at Base

Wed
25

Snow unlikely

Lt DrizzleLt DrizzleLt DrizzleLt Drizzle

Light drizzle.

Forecast times for Karuizawa are in Tokyo (Asia/Tokyo) time zone.

Max 11℃
Min 4℃

Valley temperatures from an overnight low of 4℃ to daytime highs around 11℃

Temperature at BaseTemp at Base

Thu
26

Snow unlikely

Lt DrizzleLt DrizzleLt DrizzleCloud

Light drizzle early, then cloudy later.

Forecast times for Karuizawa are in Tokyo (Asia/Tokyo) time zone.

Max 9℃
Min 5℃

Valley temperatures from an overnight low of 5℃ to daytime highs around 9℃

Temperature at BaseTemp at Base

Fri
27

Snow unlikely

Lt DrizzleDrizzleHvy DrizzleDrizzle

Light drizzle first, drizzle then heavy drizzle, 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 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.

Karuizawa Snow Forecast updated at 16:11 IST, 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.