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Karuizawa 7-Day Snow Forecast - 31st October 2026

Karuizawa Snow Forecast - 7 day

ECMWF IFS
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JMA

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Updated 31 October 2026 03:47 UTC

7-Day Snow Forecast for Karuizawa

1-week from 31 October.

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 15℃ 59°F
Min 4℃ 40°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 15℃ 59°F
Min 9℃ 47°F

Valley temperatures from an overnight low of 9℃ 47°F to daytime highs around 15℃ 59°F

Temperature at BaseTemp at Base

Sat
31

Snow unlikely

ClearClearClearClear

Clear sky.

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

Max 15℃ 59°F
Min 6℃ 43°F

Valley temperatures from an overnight low of 6℃ 43°F to daytime highs around 15℃ 59°F

Temperature at BaseTemp at Base

Sun
01

Snow unlikely

FairFairFairMixed

Fair early, then clear spells later.

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

Max 14℃ 56°F
Min 8℃ 47°F

Valley temperatures from an overnight low of 8℃ 47°F to daytime highs around 14℃ 56°F

Temperature at BaseTemp at Base

Mon
02

Snow unlikely

Lt DrizzleRainClearFair

Light drizzle first, rain then clear sky, fair later.

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

Max 13℃ 56°F
Min 5℃ 40°F

Valley temperatures from an overnight low of 5℃ 40°F to daytime highs around 13℃ 56°F

Temperature at BaseTemp at Base

Tue
03

Snow unlikely

ClearClearFairFair

Clear sky early, then fair later.

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

Max 13℃ 55°F
Min 4℃ 40°F

Valley temperatures from an overnight low of 4℃ 40°F to daytime highs around 13℃ 55°F

Temperature at BaseTemp at Base

Wed
04

Snow unlikely

ClearFairLt DrizzleDrizzle

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

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

Max 12℃ 53°F
Min 6℃ 42°F

Valley temperatures from an overnight low of 6℃ 42°F to daytime highs around 12℃ 53°F

Temperature at BaseTemp at Base

Thu
05

Snow unlikely

DrizzleLt RainMixedCloud

Drizzle first, light rain then clear spells, cloudy later.

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

Max 15℃ 59°F
Min 5℃ 41°F

Valley temperatures from an overnight low of 5℃ 41°F to daytime highs around 15℃ 59°F

Temperature at BaseTemp at Base

Fri
06

Snow unlikely

CloudClearFairLt Drizzle

Cloudy first, clear sky then fair, 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 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 03:47 UTC, next update expected imminently.

How reliable is the snow in Karuizawa?

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.