Next 3 days weather summary:Heavy rain (total 20.0mm), heaviest during Tue night. Very mild (max 13°C on Thu morning, min 7°C on Wed night). Wind will be generally light. | Days 4-6 weather summary:Light rain (total 5.0mm), mostly falling on Sun night. Very mild (max 18°C on Sat afternoon, min 9°C on Sun night). Wind will be generally light. | |||||||||||||||||
Tuesday 12 | Wednesday 13 | Thursday 14 | Friday 15 | Saturday 16 | Sunday 17 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  |  | | |  | | | | |  | | |  | |
rain shwrs | risk thun- der | mod. rain | risk thun- der | light rain | clear | some clouds | rain shwrs | clear | clear | clear | clear | clear | clear | some clouds | some clouds | light rain | light rain | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
1 | 4 | 6 | 4 | 3 | — | — | 2 | — | — | — | — | — | — | — | — | 1 | 4 | |
max °C | 11 | 11 | 8 | 11 | 11 | 8 | 13 | 11 | 9 | 15 | 16 | 13 | 17 | 18 | 14 | 15 | 13 | 11 |
min °C | 11 | 9 | 8 | 10 | 9 | 7 | 10 | 10 | 8 | 12 | 14 | 13 | 15 | 15 | 14 | 15 | 10 | 9 |
11 | 9 | 8 | 9 | 8 | 7 | 10 | 10 | 8 | 12 | 14 | 13 | 15 | 15 | 14 | 15 | 8 | 7 | |
73 | 75 | 89 | 75 | 65 | 85 | 57 | 65 | 81 | 44 | 45 | 50 | 41 | 38 | 39 | 25 | 42 | 92 | |
3050 | 3050 | 2900 | 2950 | 2900 | 3000 | 2800 | 2950 | 3300 | 3650 | 3650 | 3950 | 3950 | 3700 | 4100 | 4150 | 4150 | 4000 | |
 | 4:41 | — | — | 4:41 | — | — | 4:39 | — | — | 4:39 | — | — | 4:37 | — | — | 4:37 | — | — |
 | — | 6:43 | — | — | 6:44 | — | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — | — | 6:46 | — |
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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