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Karuizawa 7-Day Snow Forecast - 12th June 2026

Karuizawa Snow Forecast - 7 day

ECMWF IFS
GFS
JMA

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Updated 12 June 2026 02:41 PDT

7-Day Snow Forecast for Karuizawa

1-week from 12 June.

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 (3,437ft)
Next Snow?
There is no snow currently in the forecast for Karuizawa.

7-Day Snow Outlook for Karuizawa

 
Snowfall

 
Snow Line

Max 76°F
Min 50°F

Snow unlikely

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 64°F
Min 55°F

Valley temperatures from an overnight low of 55°F to daytime highs around 64°F

Temperature at BaseTemp at Base

Fri
12

Snow unlikely

ShwrsShwrsFairClear

Rain showers, fair, clear sky later.

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

Max 72°F
Min 54°F

Valley temperatures from an overnight low of 54°F to daytime highs around 72°F

Temperature at BaseTemp at Base

Sat
13

Snow unlikely

ClearFairLt DrizzleFair

Clear sky first, fair then light drizzle, fair later.

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

Max 69°F
Min 57°F

Valley temperatures from an overnight low of 57°F to daytime highs around 69°F

Temperature at BaseTemp at Base

Sun
14

Snow unlikely

FairFairCloudCloud

Fair early, then cloudy later.

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

Max 66°F
Min 51°F

Valley temperatures from an overnight low of 51°F to daytime highs around 66°F

Temperature at BaseTemp at Base

Mon
15

Snow unlikely

FairLt DrizzleCloudFair

Fair first, light drizzle then cloudy, fair later.

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

Max 71°F
Min 50°F

Valley temperatures from an overnight low of 50°F to daytime highs around 71°F

Temperature at BaseTemp at Base

Tue
16

Snow unlikely

ClearMixedFairFair

Clear sky, clear spells, fair later.

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

Max 76°F
Min 51°F

Valley temperatures from an overnight low of 51°F to daytime highs around 76°F

Temperature at BaseTemp at Base

Wed
17

Snow unlikely

FairMixedLt DrizzleLt Drizzle

Fair, clear spells, light drizzle later.

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

Max 73°F
Min 56°F

Valley temperatures from an overnight low of 56°F to daytime highs around 73°F

Temperature at BaseTemp at Base

Thu
18

Snow unlikely

Lt DrizzleLt DrizzleCloudCloud

Light drizzle early, then cloudy 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 02:41 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.