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Itoigawa Seaside Valley Weather (Next 3 days): The snow forecast for Itoigawa Seaside Valley is: Heavy rain (total 63.0mm), heaviest during Sun night. Later becoming colder with a dusting of snow on Mon morning. Freeze-thaw conditions (max 7°C on Sun morning, min -2°C on Mon night). Winds decreasing (fresh winds from the WSW on Sun night, calm by Tue night).
Itoigawa Seaside Valley Weather (Days 4-6): Moderate rain (total 12.0mm) heaviest on Wed afternoon, then becoming colder with a dusting of snow on Wed afternoon. Mild temperatures (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: | 5 |  | ||||
| Middle Lift: | 6 | | ||||
| Bottom Lift: | 8 | |
Latest snow reports near Itoigawa Seaside Valley:
Rain and snow or hail reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen but it is probably falling as rain at the bottom of the ski area from Iizuna Kogen
Continuous light rain reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen but it is forecast cold enough for snow at higher elevations in the ski area from Iizuna Kogen
Snow is falling at altitude in Nozawa Onsen. from Nozawa Onsen
Snow falling in Myoko Suginohara. from Myoko Suginohara
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 | heavy rain | heavy rain | light snow | light snow | snow shwrs | cloudy | light rain | heavy rain | mod. rain | light snow | light snow | some clouds | clear | clear | some clouds | clear | clear | |
km/h | ||||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||||
— | — | — | 4 | 1 | — | — | — | — | — | 2 | 3 | — | — | — | — | — | — | |
12 | 12 | 23 | — | — | — | — | 2 | 14 | 6 | 6 | — | — | — | — | — | — | — | |
max °C | 7 | 5 | 3 | 2 | 2 | -1 | 6 | 5 | 3 | 3 | 2 | 1 | 3 | 4 | 2 | 7 | 7 | 7 |
min °C | 6 | 3 | 2 | 2 | -1 | -2 | 3 | 4 | 2 | 3 | 2 | 1 | 1 | 2 | 1 | 6 | 6 | 6 |
2 | -2 | -4 | -3 | -4 | -5 | 0 | 1 | 0 | 3 | -1 | -1 | 1 | 2 | 0 | 5 | 5 | 5 | |
93 | 93 | 94 | 87 | 84 | 77 | 62 | 86 | 90 | 98 | 98 | 97 | 81 | 71 | 64 | 54 | 66 | 49 | |
1950 | 1150 | 1000 | 700 | 700 | 0 | 1100 | 1300 | 1000 | 1000 | 850 | 700 | 700 | 1200 | 1650 | 2100 | 2500 | 2700 | |
 | 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 63.0mm), heaviest during Sun night. Later becoming colder with a dusting of snow on Mon morning. Freeze-thaw conditions (max 7°C on Sun morning, min -2°C on Mon night). Winds decreasing (fresh winds from the WSW on Sun night, calm by Tue night).
Moderate rain (total 12.0mm) heaviest on Wed afternoon, then becoming colder with a dusting of snow on Wed afternoon. Mild temperatures (max 7°C on Fri morning, min 1°C on Wed night). Wind will be generally light.
Latest snow reports near Itoigawa Seaside Valley:
Rain and snow or hail reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen but it is probably falling as rain at the bottom of the ski area from Iizuna Kogen
Continuous light rain reported from Nagano at 120 metres elevation 8 kms SE of Iizuna Kogen but it is forecast cold enough for snow at higher elevations in the ski area from Iizuna Kogen
Snow is falling at altitude in Nozawa Onsen. from Nozawa Onsen
Snow falling in Myoko Suginohara. from Myoko Suginohara
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | 23 cm |
| Last snowfall: | 12 Dec 2025 |
| Snow Alerts | Create Alert |
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.5 | 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 Itoigawa Seaside Valley at the specific elevation of 490 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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