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Ski Japan - Iwate

Okunakayama Kōgen Snow Forecast

40.08° N 141.19° E

Weather Forecast for Okunakayama Kōgen at 1000m altitude

Issued:
8 pm 26 Aug 2026 (local time)
Forecast update in:
 hr  min
Last 6 daysScroll left for last 6 daysNow

Next 4 days weather summary:

Heavy rain (total 24.0mm), heaviest during Thu afternoon. Very mild (max 18°C on Wed night, min 14°C on Fri night). Winds decreasing (fresh winds from the W on Thu night, calm by Sat morning).

Days 5-7 weather summary:

Heavy rain (total 26.0mm), heaviest during Sat night. Very mild (max 17°C on Tue morning, min 13°C on Sat night). Wind will be generally light.

Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
mod rain
light rain
mod rain
mod rain
clear
part cloud
cloud
cloud
light rain
heavy rain
light rain
light rain
light rain
light rain
cloud
cloud
mod. rain
light rain
mod. rain
mod. rain
clear
some clouds
cloudy
cloudy
light rain
heavy rain
light rain
light rain
light rain
light rain
cloudy
cloudy
km/h
10
WSW
5
SW
15
WSW
30
W
25
WNW
30
W
15
WNW
0
W
5
SSW
15
SE
20
SE
15
SSE
10
SSE
10
SSE
10
SSE
20
S
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
7
1
7
8
1
14
2
2
4
1
max °C
18
18
17
16
18
18
15
16
15
13
14
15
15
16
16
16
min °C
16
17
16
15
16
16
14
15
14
13
14
14
14
15
15
16
 chill °C
16
17
15
13
14
14
13
15
13
12
12
13
13
14
14
15
Humid %
87
89
93
98
74
63
73
70
82
98
98
97
98
97
95
92
Freeze m
4100
4200
4150
4050
4050
4200
4200
4200
4150
4350
4550
4750
4500
4500
4550
4550
Sea lvl1000m2000m3000m4000m5000m
1718171617171516151314151516161618201918222015191715161615171716
Sunrise
4:56
4:58
4:58
5:00
5:01
Sunset
6:15
6:14
6:12
6:10
6:08

Days 7-16 weather summary:

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Avalanche information: Japan Avalanche Network


Snow Radar

Latest snow reports near Okunakayama Kōgen:

No recent snow reports

No recent snow reports

Okunakayama Kōgen Snow Conditions

Top snow depth:
Bottom snow depth:
Fresh snowfall depth:
Last snowfall:11 Apr 2026
Snow AlertsCreate Alert
Other resorts in Japan - Iwate are reporting: powder (0) / good piste (0)

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Snow History

Week 4 of August has on average:

0.0
Bluebird Powder days
Fresh snow, mostly sunny, light wind.
0.0
Powder days
Fresh snow, limited sun, any wind.
0.0
Bluebird days
Average snow, mostly sunny, light wind.


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