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Appi Kogen ski resort

Asia

Appi Kogen Snow Forecast

Closed for the season

Best months to book: January, February, March · last season + 30-yr record

Closed for the season closed May 6

Weather data is still collected for informational purposes.

Last Snowfall

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Past 24 Hours

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7-Day Forecast

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Snow Depth

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Updated: Sep 21, 2:00 AMWeather at base: 500m
SnowSure™ Score2025-26 season
Closed for the season

Appi Kogen is closed for the season. Here is when it is usually best to book.

Best months to book: January, February, March. Best weeks: 20 Mar–25 Mar, 27 Mar–2 Apr, 3 Apr–9 Apr.Dec1Jan2Feb3MarAprOpens 7 Dec

January

#1 to book

56cm avg

February

#2 to book

42cm avg

March

#3 to book

31cm avg · scored 13.8

Best weeks to book

  1. #120 Mar25 Marscored 16.8
  2. #227 Mar2 Aprscored 10.3
  3. #33 Apr9 Aprscored 10.9

Ranked on 25% last season's SnowSure score (2025-26) · 75% 30-year snowfall and base-depth record. The live score returns when the lifts turn.

Snow Summary

1,328m

Updated Sep 21, 2026 at 2:00 AM

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Past 10d
7-Day Forecast
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Prev10d
Now21
T22
W23
T24
F25
S26
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Days 814 and every model are in Pro.Unlock with Pro
Past
Today
Forecast

Hourly Forecast

21 Mon
17° / 11°
22 Tue
17° /
23 Wed
17° /
24 Thu
15° /
25 Fri
13° /
26 Sat
17° /
27 Sun
16° /
Days 8–14 and every model are in SnowSure Pro.Unlock with Pro
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight28 Mon29 Tue30 Wed1 Thu2 Fri3 Sat4 Sun
Conditions🌧️☁️☁️☀️☀️☀️☀️🌤️☀️🌧️🌤️🌧️☁️☀️☁️☁️☀️☁️🌧️☀️
heavy drizzlecloudycloudyclearclearclearclearmostly clearclearlight drizzlemostly clearlight drizzlecloudyclearcloudycloudyclearcloudysome cloudslight drizzleclear
Summit1,328 mModeled
Temp°C14°16°12°13°15°11°15°12°13°12°10°15°14°15°
Feels like°C13°15°11°11°12°14°10°11°13°12°13°
Snowcm·····················
Precipmm3.30.20.7······0.3·0.8··0.1···0.20.4·
Windkm/h814129131043510147966487996
Mid-mountain914 mModeled
Temp°C16°19°15°16°17°12°13°18°14°16°11°11°14°13°18°16°17°11°
Feels like°C17°19°14°15°16°11°13°18°13°14°10°12°12°17°16°16°10°
Snowcm·····················
Precipmm3.30.20.7······0.3·0.8··0.1···0.20.4·
Windkm/h814129131043510147966487996
Base500 mModeled
Temp°C19°22°17°18°20°14°16°21°12°17°19°14°14°17°10°16°21°11°19°20°14°
Feels like°C21°23°18°18°19°14°16°21°12°17°17°14°12°15°15°20°10°19°20°13°
Snowcm·····················
Precipmm3.30.20.7······0.3·0.8··0.1···0.20.4·
Windkm/h814129131043510147966487996
Humidity%947992756492745995766089705390665594716686
0°C linem
Forecast Range · SnowSure Pro

Every model for Appi Kogen, side by side for 14 days

Where the models agree, where they split, and which one has been most accurate here. Free for 14 days, then yearly.

Unlock with Pro

SnowSure™ blend — verified model weighting

The black line is not a simple average. For Appi Kogen (japan), we combine seven global weather models using weights learned from daily forecast verification — comparing each model's prediction to measured snowfall (SNOTEL, resort reports, ERA5).

  • 1.Horizon buckets: days 1–3, 4–7, and 8–14 each get separate weights — short-range skill differs from long-range.
  • 2.Regional calibration: weights come from verified error in this geography (Rockies, Alps, Japan, etc.), recalculated weekly.
  • 3.Ground truth only: we never grade a forecast against another model — only against measured snow.

Building verification history for this resort.

How we verify forecasts →

Snowfall Forecast Maps

Japan (Tohoku & Niigata) region

El Niño Outlook · Winter 2026-27

Appi Kogen El Niño rank & forecast

Appi Kogen ranks #396 of 488 SnowSure resorts — Tier E, −14% in strong El Niño winters.

Tier EDeep timing play — aim late winter: Strong El Niño winters ran clearly below this resort’s own baseline (≤ −8%). Still skiable — schedule late season; one storm cycle can beat the climatology.

#396 of 488Tier EDeep timing play — aim late winter

Strong-event signal: −14% vs this resort's 30-yr avg

In the three strongest El Niño winters on record ('97-98, '15-16, '23-24), Appi Kogen averaged -13% versus its own 30-year snowfall baseline. Historically this is a timing play rather than a reason to stay home: aim for late winter (February–March) in winter 2026-27. Analog winters: '97-98 -20%, '15-16 -16%, '23-24 -5%. A pattern, not a promise.

'97-98 −20%'15-16 −16%'23-24 −5%

ENSO seasonal analog

History · not a forecast

In 10 past El Niño winters at Appi Kogen, ERA5 season snowfall median was 166 cm (65 in), about 13% below this resort’s long-term median. This is a historical analog from reanalysis — not a prediction of this winter’s storm track.

Prevailing ONI

El Niño

JJA 2026 · ANOM +1.8°C

Analog season median

166cm

10 El Niño winters · 13% below median

All-season median

191cm

Across 30 ERA5 seasons (2026-27)

PhaseSeasonsMedianp25–p75Recent analogs
El Niñocurrent10166cm150cm – 185cm2023, 2019, 2018, 2015, 2014, 2009
La Niña12200cm168cm – 205cm2022, 2021, 2020, 2017, 2011, 2010
ENSO-neutral8202cm175cm – 221cm2025, 2024, 2016, 2013, 2012, 2003

Season snowfall from Open-Meteo ERA5 reanalysis (~9 km). ENSO phase from NOAA CPC Oceanic Niño Index. Relative phase differences are more trustworthy than absolute cm totals. Source: NOAA CPC Oceanic Niño Index + Open-Meteo ERA5 via SnowSure season archive.

Local Reports

0 reports

How accurate is this forecast?

We verify every forecast against what actually fell — see the model-by-model results.

Frequently asked questions about Appi Kogen

How much snow is Appi Kogen getting this week?
No significant snow is forecast at Appi Kogen over the next 7 days.
What is the 14-day snow forecast for Appi Kogen?
The full 14-day forecast for Appi Kogen — the SnowSure™ blend and every model we track, day by day — is part of SnowSure Pro. The first 7 days are free on this page.
How accurate are SnowSure forecasts for Appi Kogen?
We verify every forecast against what actually fell and publish the results — see our forecast verification pages for model-by-model accuracy, updated continuously.