Next 4 days weather summary:Heavy rain (total 27.0mm), heaviest during Tue afternoon. Very mild (max 18°C on Wed morning, min 13°C on Wed night). Wind will be generally light. | Days 5-7 weather summary:Heavy rain (total 21.0mm), heaviest during Fri afternoon. Very mild (max 18°C on Fri morning, min 13°C on Thu night). Wind will be generally light. | |||||||||||||||
Tuesday 30 | Wednesday 1 | Thursday 2 | Friday 3 | Saturday 4 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  | |  | | | |  | |  | | | | |
rain shwrs | t-storm risk | t-storm risk | rain shwrs | light rain | light rain | mod. rain | light rain | light rain | rain shwrs | rain shwrs | t-storm risk | light rain | rain shwrs | t-storm risk | rain shwrs | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 2 | 3 | 5 | 3 | 1 | 2 | 7 | 2 | 2 | 1 | 1 | 4 | 2 | 2 | 4 | 2 |
max °C | 15 | 17 | 17 | 15 | 18 | 17 | 16 | 14 | 13 | 15 | 18 | 17 | 14 | 18 | 18 | 15 |
min °C | 15 | 16 | 16 | 14 | 17 | 16 | 13 | 14 | 13 | 13 | 17 | 15 | 13 | 15 | 16 | 15 |
chill °C | 15 | 16 | 16 | 14 | 17 | 16 | 13 | 14 | 12 | 12 | 17 | 15 | 13 | 15 | 16 | 15 |
Humid % | 86 | 83 | 80 | 83 | 60 | 73 | 78 | 91 | 94 | 94 | 83 | 94 | 95 | 78 | 76 | 94 |
Freeze m | 4050 | 4150 | 4200 | 4100 | 4200 | 4200 | 4250 | 4350 | 4600 | 4650 | 4550 | 4450 | 4300 | 4150 | 4250 | 4500 |
 | — | 4:30 | — | — | 4:30 | — | — | 4:31 | — | — | 4:31 | — | — | 4:31 | — | — |
 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — |
SnowProGo pro and carve into:
Avalanche information: Japan Avalanche Network
Latest snow reports near Sun Valley (Nagano):
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 9 May 2026 |
| Snow Alerts | Create Alert |
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. |
The above table gives the weather forecast for Sun Valley (Nagano) at the specific elevation of 1510 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Sun Valley (Nagano). To access the weather forecasts for the other elevations, use the tab navigation above the table. For a wider view of the weather, check out the Weather Map of Japan.
Click here to read further information on freezing levels and how we forecast our temperatures.
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