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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 29 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 26.0mm), heaviest during Mon night. Very mild (max 17°C on Mon afternoon, min 13°C on Sat night). Wind will be generally light.

Days 5-7 weather summary:

Moderate rain (total 16.0mm), heaviest on Thu afternoon. Warm (max 21°C on Wed morning, min 11°C on Thu night). Wind will be generally light.

Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
light rain
light rain
light rain
light rain
light rain
light rain
mod rain
light rain
light rain
rain showers
rain showers
thunderstorm
light rain
light rain
light rain
rain showers
light rain
light rain
light rain
light rain
light rain
light rain
mod. rain
light rain
light rain
rain shwrs
rain shwrs
t-storm
risk
light rain
light rain
light rain
rain shwrs
km/h
10
SSE
15
SSE
15
SSE
15
SSW
10
S
10
S
15
S
20
SSE
20
SSW
15
SW
20
WSW
15
W
15
WSW
10
W
15
WNW
25
W
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
1
4
3
2
1
1
9
3
2
1
1
4
2
3
4
1
max °C
14
13
14
15
16
17
16
16
17
18
21
21
19
16
15
14
min °C
13
13
14
14
15
16
15
16
17
17
20
20
16
16
15
11
 chill °C
12
12
13
13
14
16
15
15
16
17
20
20
16
16
14
8
Humid %
95
98
98
98
93
87
82
95
98
83
85
82
78
89
88
88
Freeze m
4150
4300
4400
4350
4450
4450
4400
4500
4650
4600
4550
4550
4450
4100
3900
3500
Sea lvl1000m2000m3000m4000m5000m
1413141516171616171821211816151315151515181916171818232218171714
Sunrise
5:00
5:01
5:01
5:03
5:03
Sunset
6:10
6:08
6:07
6:06
6:04

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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