Home/Countries/Japan/Nagano/Koumi Riekkusu Ski Valley

🇯🇵 Koumi Riekkusu Ski Valley Snow Forecast

Issued: 18 Oct 2026Next 6 days: 104cm fresh snowSnow depth: 302cm top / 144cm bottom

6 Day Forecast|16 Day ForecastSign in for free to unlock

Current Conditions - Perfect

Lift	Weather	Temp	Wind	Snow Depth
Top (1780m)		-1°C	3 km/h	302cm
Bottom (1400m)		2°C	2 km/h	144cm

Next 3 Days

Exceptional conditions ahead for Koumi Riekkusu Ski Valley! Expect 42cm of fresh powder over the next three days. Temperatures will remain well below freezing, ensuring perfect snow preservation. Light winds make for ideal skiing conditions.

Days 4–6

The outstanding weather continues with an additional 62cm of snowfall expected. Night-time snow showers will replenish the pistes beautifully, while days remain crisp and clear. Base depth continues to build impressively.

Extended Outlook

The long-range forecast for Koumi Riekkusu Ski Valley looks absolutely phenomenal. Consistent snowfall, sub-zero temperatures, and calm winds will persist. Snow depth at the summit is an impressive 302cm. Simply world-class conditions!

6-Day Forecast	Sun 18 Oct			Mon 19 Oct			Tue 20 Oct			Wed 21 Oct			Thu 22 Oct			Fri 23 Oct
6-Day Forecast	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night	AM	PM	night
Weather
Summary	Clear	Clear	Heavy Snow	Clear	Clear	Heavy Snow	Clear	Clear	Heavy Snow	Clear	Clear	Heavy Snow	Clear	Clear	Heavy Snow	Clear	Clear	Heavy Snow
Wind (km/h)	3	2	1	1	3	3	1	2	0	0	2	1	0	1	2	0	3	0
Snow (cm)	—	—	14	—	—	13	—	—	15	—	—	17	—	—	27	—	—	18
Rain (mm)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Max Temp (°C)	-1	-2	-3	0	0	-3	-1	0	-4	0	0	-3	-2	0	-3	-2	0	-3
Min Temp (°C)	-4	-6	-4	-6	-5	-4	-6	-3	-5	-6	-3	-4	-4	-4	-4	-4	-6	-4
Wind Chill (°C)	-6	-7	-6	-7	-7	-5	-8	-5	-5	-8	-3	-6	-6	-5	-6	-5	-8	-4
Humidity (%)	40	32	32	34	35	38	34	48	41	38	30	36	30	40	35	47	42	31
Freeze Lvl (m)	108	446	255	485	228	111	51	63	377	381	304	469	159	439	286	368	94	127

16 Day Forecast

Create a free account to unlock 16-day forecasts for every resort.