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Iwakisan Hyakuzawa Weather (Next 3 days): The snow forecast for Iwakisan Hyakuzawa is: Moderate rain (total 15.0mm) heaviest on Fri morning, then becoming colder with a dusting of snow on Fri night. Freeze-thaw conditions (max 7°C on Sun night, min -4°C on Fri night). Winds decreasing (strong winds from the W on Fri night, moderate winds from the WSW by Sat afternoon).
Iwakisan Hyakuzawa Weather (Days 4-6): Moderate rain (total 12.0mm) on Mon afternoon. Becoming colder with heavy fall of snow, heaviest during Wed morning. Freeze-thaw conditions (max 8°C on Mon morning, min -8°C on Wed night). Winds decreasing (strong winds from the WSW on Mon morning, light winds from the WNW by Tue night).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 5 |  | ||||
| Middle Lift: | 6 | | ||||
| Bottom Lift: | 7 | |
Latest snow reports near Iwakisan Hyakuzawa:
Friday 28 | Saturday 29 | Sunday 30 | Monday 1 | Tuesday 2 | Wednesday 3 | Thursday 4 | |||||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  |  | |  | | | | | |  |  | | | | | | |
light rain | light snow | light snow | some clouds | some clouds | light rain | rain shwrs | rain shwrs | rain shwrs | light rain | light rain | rain shwrs | light rain | light snow | mod. snow | heavy snow | light snow | mod. snow | light snow | light snow | light snow | |
km/h | |||||||||||||||||||||
Snow map |  |  |  |  |  |  |  | ||||||||||||||
— | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | 9 | 11 | 5 | 6 | 2 | 2 | 2 | |
5 | — | — | — | — | 3 | 5 | 1 | 1 | 4 | 4 | 2 | 1 | 1 | — | — | — | — | — | — | — | |
max°C | 4 | -1 | -3 | 0 | 0 | 3 | 6 | 6 | 7 | 8 | 7 | 4 | 4 | 3 | -1 | -5 | -7 | -8 | -7 | -6 | -4 |
min°C | 2 | -2 | -4 | -2 | -1 | 0 | 6 | 6 | 5 | 8 | 6 | 2 | 4 | 0 | -5 | -6 | -7 | -8 | -7 | -6 | -5 |
-5 | -10 | -14 | -10 | -7 | -6 | 1 | 1 | 1 | 3 | 1 | -4 | -1 | -6 | -12 | -14 | -17 | -17 | -17 | -16 | -15 | |
90 | 90 | 80 | 77 | 80 | 87 | 87 | 85 | 93 | 84 | 88 | 79 | 90 | 87 | 97 | 95 | 87 | 88 | 83 | 85 | 71 | |
1250 | 700 | 350 | 600 | 800 | 900 | 1550 | 1650 | 1750 | 1900 | 1800 | 1150 | 1300 | 1150 | 450 | 150 | 0 | 0 | 0 | 0 | 250 | |
 | 6:39 | — | — | 6:39 | — | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — | 6:45 | — | — |
 | — | 4:13 | — | — | 4:13 | — | — | 4:12 | — | — | 4:12 | — | — | 4:12 | — | — | 4:10 | — | — | 4:10 | — |
Moderate rain (total 15.0mm) heaviest on Fri morning, then becoming colder with a dusting of snow on Fri night. Freeze-thaw conditions (max 7°C on Sun night, min -4°C on Fri night). Winds decreasing (strong winds from the W on Fri night, moderate winds from the WSW by Sat afternoon).
Moderate rain (total 12.0mm) on Mon afternoon. Becoming colder with heavy fall of snow, heaviest during Wed morning. Freeze-thaw conditions (max 8°C on Mon morning, min -8°C on Wed night). Winds decreasing (strong winds from the WSW on Mon morning, light winds from the WNW by Tue night).
Latest snow reports near Iwakisan Hyakuzawa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 21 Nov 2025 |
| Snow Alerts | Create Alert |
0.2 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
2.4 | 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 Iwakisan Hyakuzawa at the specific elevation of 784 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Iwakisan Hyakuzawa. 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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