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Happo One resort snow
Ski Japan - Nagano

Happo One Snow Forecast

36.70° N 137.84° E

Weather Forecast for Happo One at 1296m altitude

Issued:
2 pm 29 Aug 2026 (local time)
Forecast update in:
 hr  min
Last 6 daysScroll left for last 6 daysNow

Next 3 days weather summary:

Heavy rain (total 57.0mm), heaviest during Sat afternoon. Warm (max 22°C on Mon morning, min 18°C on Sat afternoon). Wind will be generally light.

Days 4-6 weather summary:

Heavy rain (total 53.0mm), heaviest during Thu night. Warm (max 23°C on Tue afternoon, min 17°C on Thu afternoon). Wind will be generally light.

Sat
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
heavy rain
heavy rain
mod rain
thunderstorm
rain showers
rain showers
thunderstorm
rain showers
rain showers
thunderstorm
rain showers
rain showers
thunderstorm
rain showers
thunderstorm
mod rain
heavy rain
heavy rain
heavy rain
mod. rain
t-storm
risk
rain shwrs
rain shwrs
t-storm
risk
rain shwrs
rain shwrs
t-storm
risk
rain shwrs
rain shwrs
t-storm
risk
rain shwrs
t-storm
risk
mod. rain
heavy rain
km/h
10
WSW
5
W
5
WSW
5
W
5
SW
5
SSE
0
WNW
10
S
0
S
5
NNE
5
S
5
S
5
NNW
5
S
0
WNW
5
WNW
5
WSW
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
22
12
7
7
1
1
5
1
1
4
1
1
5
5
4
6
17
max °C
18
19
20
20
18
22
22
19
22
23
20
23
22
20
21
19
17
min °C
18
19
19
20
18
20
20
18
20
21
19
21
20
19
20
17
17
 chill °C
18
19
19
20
18
20
20
18
20
21
19
21
20
19
20
17
17
Humid %
99
98
92
90
90
83
78
85
80
73
91
79
80
87
77
84
97
Freeze m
5100
5150
5000
5050
5100
5050
5200
5100
5000
4950
5000
5000
4850
4800
4850
4750
4850
Sea lvl1000m2000m3000m4000m5000m
16161717161818161819171818171715142021232320262420262521272421242119
Sunrise
5:16
5:18
5:18
5:18
5:20
Sunset
6:22
6:20
6:19
6:17
6:15
6:15

Days 7-16 weather summary:

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Avalanche information: Japan Avalanche Network


Snow Radar

Latest snow reports near Happo One:

No recent snow reports

No recent snow reports

Happo One Snow Conditions

Top snow depth:0cm
Bottom snow depth:0cm
Fresh snowfall depth:
Last snowfall: 7 Apr 2026
Snow AlertsCreate Alert
Other resorts in Japan - Nagano 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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