J2Ski USA J2Ski logo
Facebook

Karuizawa Weather Forecast - 7 to 16 days - 12th August 2026

Karuizawa Weather

ECMWF IFS
GFS
JMA

PROSubscribe to Switch Weather Model

Weather Forecast for Karuizawa (3,084ft to 3,789ft)

Weather Outlook from 12 August.

Karuizawa Forecast

See below for the detailed long-range forecast, including lowest and highest temperatures, sunshine, cloud cover, wind and rain projections.

Karuizawa Weather Forecast updated at 14:43 PDT, next update expected imminently.

Long-range Snow Outlook for Karuizawa

 
Snowfall

 
Snow Line

Max 84°F
Min 58°F

Snow unlikely

Karuizawa Daily Weather Forecast Detail

16 Day Weather and Snow Forecast for Karuizawa from OpenMeteo(JMA)
BaseSnow and WeatherTemp
Town
Wed
12
Rain

Rain.

Max 66°F
Min 63°F
Thu
13
Lt Rain

Light rain.

Max 69°F
Min 65°F
Fri
14
Lt Rain

Light rain.

Max 69°F
Min 66°F
Sat
15
Lt Drizzle

Light drizzle.

Max 68°F
Min 63°F
Sun
16
Lt Drizzle

Light drizzle.

Max 76°F
Min 59°F
Mon
17
Clear

Clear sky.

Max 84°F
Min 58°F
Tue
18
Mixed

Clear spells.

Max 81°F
Min 64°F

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 Weather Forecast updated at 14:43 PDT, next update expected imminently.

Current Snow

For current snow depths and skiing conditions, see our Current Snow Report for Karuizawa.

For more information about this Japanese Ski Resort, See Also Skiing and Snowboarding in Karuizawa .

Off-Piste Safety in Karuizawa

Before skiing or snowboarding off-piste in Karuizawa, you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.