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Itoigawa Seaside Valley Weather (Next 3 days): The snow forecast for Itoigawa Seaside Valley is: Heavy rain (total 20.0mm) on Sun afternoon. Becoming colder with heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 5°C on Sun morning, min -3°C on Mon night). Winds decreasing (strong winds from the WSW on Sun night, calm by Tue night).
Itoigawa Seaside Valley Weather (Days 4-6): A light covering of new snow, mostly falling on Wed afternoon. Freeze-thaw conditions (max 7°C on Fri morning, min -1°C on Wed night). Wind will be generally light.
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 4 |  | ||||
| Middle Lift: | 5 | | ||||
| Bottom Lift: | 5 | |
Latest snow reports near Itoigawa Seaside Valley:
Continuous light snow reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen but it is probably falling as rain apart from near the top of the ski area from Iizuna Kogen
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  |  |  | | | |  |  | |  |  | | | |
heavy rain | light snow | mod. snow | light snow | light snow | snow shwrs | cloudy | light rain | mod. snow | light snow | light snow | light snow | some clouds | some clouds | clear | clear | clear | clear | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | 3 | 10 | 4 | 1 | — | — | — | 6 | 2 | 3 | 2 | — | — | — | — | — | — | |
11 | 7 | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | |
max °C | 5 | 3 | 2 | 0 | 0 | -2 | 4 | 4 | 3 | 2 | 1 | 0 | 2 | 3 | 3 | 7 | 7 | 7 |
min °C | 5 | 2 | 0 | 0 | -2 | -3 | 2 | 2 | 1 | 1 | 1 | -1 | 0 | 1 | 2 | 6 | 6 | 6 |
3 | -4 | -6 | -6 | -6 | -6 | -1 | -2 | -1 | 1 | -1 | -1 | 0 | 1 | 0 | 5 | 4 | 5 | |
95 | 95 | 95 | 88 | 86 | 77 | 60 | 87 | 94 | 98 | 99 | 98 | 83 | 68 | 53 | 44 | 54 | 45 | |
1900 | 1200 | 1000 | 700 | 700 | 0 | 1050 | 1300 | 1000 | 950 | 950 | 700 | 750 | 1150 | 1750 | 2350 | 2550 | 2750 | |
 | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — |
 | — | 4:31 | — | — | 4:31 | — | — | 4:32 | — | — | 4:32 | — | — | 4:32 | — | — | 4:34 | — |
Heavy rain (total 20.0mm) on Sun afternoon. Becoming colder with heavy fall of snow, heaviest during Tue night. Freeze-thaw conditions (max 5°C on Sun morning, min -3°C on Mon night). Winds decreasing (strong winds from the WSW on Sun night, calm by Tue night).
A light covering of new snow, mostly falling on Wed afternoon. Freeze-thaw conditions (max 7°C on Fri morning, min -1°C on Wed night). Wind will be generally light.
Latest snow reports near Itoigawa Seaside Valley:
Continuous light snow reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen but it is probably falling as rain apart from near the top of the ski area from Iizuna Kogen
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 23 cm |
| Last snowfall: | 12 Dec 2025 |
| Snow Alerts | Create Alert |
0.4 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
2.3 | Powder days Fresh snow, limited sun, any wind. |
0.1 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Itoigawa Seaside Valley at the specific elevation of 740 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Itoigawa Seaside Valley. 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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