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snowy resort
Ski Japan - Hiroshima

Osa Snow Forecast

34.74° N 132.22° E
865m altitude
Issued:
8 am 15 Aug 2026 (local time)
Forecast update in:
 hr  min
Last 6 daysScroll left for last 6 daysNow

Next 3 days weather summary:

Moderate rain (total 10.0mm), heaviest on Sat afternoon. Warm (max 23°C on Sat morning, min 20°C on Sun afternoon). Winds increasing (calm on Sat morning, fresh winds from the S by Sun night).

Days 4-6 weather summary:

Light rain (total 6.0mm), mostly falling on Tue afternoon. Warm (max 26°C on Tue afternoon, min 21°C on Tue night). Wind will be generally light.

Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
light rain
thunderstorm
cloud
light rain
light rain
light rain
cloud
part cloud
part cloud
part cloud
rain showers
part cloud
part cloud
thunderstorm
part cloud
part cloud
thunderstorm
rain showers
light rain
t-storm
risk
cloudy
light rain
light rain
light rain
cloudy
some clouds
some clouds
some clouds
rain shwrs
some clouds
some clouds
t-storm
risk
some clouds
some clouds
t-storm
risk
rain shwrs
km/h
5
SSE
10
SSE
15
SSE
20
S
20
S
30
S
20
S
25
S
20
S
15
SSW
5
S
10
S
10
S
5
SSE
10
SSE
5
S
5
SE
10
SSE
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
1
6
1
1
1
1
2
2
1
max °C
23
23
21
21
21
21
21
23
21
25
26
22
25
26
22
26
25
23
min °C
22
23
21
21
20
20
21
22
21
23
24
21
24
24
22
24
24
22
 chill °C
22
23
21
21
20
20
21
22
21
23
24
21
24
24
22
24
24
22
Humid %
77
77
81
76
90
87
87
69
78
65
68
88
74
66
80
68
72
78
Freeze m
4850
4950
5050
4850
5000
5100
5100
5100
5150
5150
5300
5200
5150
5150
5100
5150
5200
5100
Sea lvl1000m2000m3000m4000m5000m
222221212020212221232321232422242422242421212120212320262621272622272522
Sunrise
5:30
5:31
5:31
5:33
5:33
5:33
Sunset
6:59
6:58
6:57
6:55
6:54
6:53

Days 7-16 weather summary:

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Avalanche information: Japan Avalanche Network


Snow Radar

Latest snow reports near Osa:

No recent snow reports

No recent snow reports

Osa Snow Conditions

Top snow depth:
Bottom snow depth:
Fresh snowfall depth:
Last snowfall:13 Mar 2026
Snow AlertsCreate Alert
Other resorts in Japan - Hiroshima are reporting: powder (0) / good piste (0)

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Snow History

Week 3 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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