📷 Happo-One
Asia
Happo-One
Pre-season — not open yet
Projected to open December 1, 2026
Conditions data updated Tue, Jul 14, 08:04 AM UTC · informational only
Scroll for happiness
Closed for Season
Weather data is still collected for informational purposes.
Last Snowfall
--
Past 24 Hours
0cm
Past 48 Hours
0cm
Past 10 Days
0cm
14-Day Forecast
0cm
Snow Depth
--
Powder Days
3
2026–27 season
Bluebird Days
1
2026–27 season
Overview
Happo-One is a ski resort in Asia, Japan, currently closed for the season (Projected to open December 1, 2026). Conditions last updated 2026-07-14 08:04 UTC.
Resort Guide
Happo-One is a prominent ski resort located in Hakuba Valley, Nagano Prefecture, Japan, renowned for its expansive slopes and panoramic views of the Northern Japanese Alps. The resort features a wide variety of terrain suitable for all levels, from gentle beginner runs to challenging expert courses, and is known for its reliable powder snow and long ski season. Key amenities include modern lift systems, ski and snowboard schools, rental services, and a vibrant base area with dining and accommodation options. Happo-One stands out for its role as a host venue during the 1998 Winter Olympics and its access to both on-piste and off-piste experiences.
Gallery
Click to expand • 8 total photos
Terrain & lifts
Resort-reported stats for Happo-One
Lifts
21
Skiable area
544 ac
Longest run
8 km / 5 mi
Runs by difficulty(16 total)
Beginner
5
30% of terrain
Intermediate
8
50% of terrain
Advanced
3
20% of terrain
Run counts estimated from resort-reported totals and terrain mix.
Lift fleet
- Gondola1
- High-speed quad5
- Triple chair4
- Double chair11
Resort Info
Season dates
Future dates are operator estimates and may change.
Ski passes
Access tiers change by season — confirm benefits on the pass operator's site.
Top Après Ski
The Rabbit Hole – A popular après-ski bar in Hakuba near Happo-One, The Rabbit Hole is renowned for its relaxed atmosphere, excellent craft beers, gourmet burgers, and live music, making it a favorite gathering spot for skiers and snowboarders to unwind after a day on the slopes.
Snow Summary
Updated Jul 14, 2026 at 8:04 AM
Historical data from Open-Meteo archive • Forecast from ECMWF IFS model
Snowfall Forecast Maps
Japanese Alps region
Current Conditions
Reported Tue, Jul 14, 08:04 AM UTC
Base
800m
Temp
26.6°C
Wind
3.2km/h
Snow Depth
--
14-Day Forecast
0cm
Mid-Mountain
1316m
Temp
--°C
Wind
4km/h
Snow Depth
--
14-Day Forecast
0cm
Summit
1831m
Temp
19.9°C
Wind
3.2km/h
Snow Depth
--
14-Day Forecast
0cm
Live Conditions
Happo-One Webcams
Hakuba Happo-one
Hakuba Happo-one
Hakuba Happo-one
Hakuba Happo-one
Hakuba Happo-one
Hakuba Happo-one
Hakuba Happo-one / Skiday
Hakuba Happo-one / Skiday
Hakuba Happo-one / Skiday
Local Reports
0 reportsDaily Snowfall Forecast by Model
Black line = verified SnowSure™ blend (not a simple average). Weights update weekly from measured snowfall at SNOTEL stations and resort reports.
SnowSure™ blend — verified model weighting
The black line is not a simple average. For Happo-One (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 →Hourly Forecast Detail
AM / PM / Night breakdown with wind and freezing level
NWP models refresh up to 4× daily · Last synced Jul 14, 8:04 AM
Today 21 / 13 | Wed, Jul 15 22 / 136.8mm | Thu, Jul 16 20 / 1411.8mm | Fri, Jul 17 20 / 134.1mm | Sat, Jul 18 17 / 1519.3mm | Sun, Jul 19 20 / 157.8mm | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night |
| Snow (cm) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Precip (mm) | 0 | 0 | 0 | 0 | 2.3 | 4.5 | 3.2 | 2.9 | 5.7 | 0.6 | 2.1 | 1.4 | 8.2 | 6.4 | 4.7 | 5.5 | 1.4 | 0.9 |
| Temp (°C) | 18 | 21 | 15 | 20 | 20 | 15 | 18 | 19 | 16 | 18 | 19 | 15 | 16 | 17 | 15 | 17 | 19 | 16 |
| Wind (km/h) | 6 | 5 | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 3 | 4 | 4 | 4 | 5 | 5 | 4 | 2 | 5 |
| Gusts (km/h) | 36 | 31 | 31 | 28 | 40 | 33 | 27 | 21 | 31 | 15 | 19 | 27 | 26 | 25 | 26 | 27 | 30 | 29 |
14-Day Snow Forecast by Model
Summit elevation (1831m)
10-Day Forecast
Today
14
☁️
21.4°
13.1°
6 km/h
Wed
15
🌧️
22.3°
12.6°
5 km/h
Thu
16
🌧️
19.8°
13.7°
5 km/h
Fri
17
🌧️
20°
13°
6 km/h
Sat
18
🌧️
17.2°
14.9°
8 km/h
Sun
19
🌧️
19.6°
15.3°
8 km/h
Mon
20
🌧️
19.6°
14.4°
6 km/h
Tue
21
🌧️
18.4°
12.8°
8 km/h
Wed
22
🌧️
16.7°
11.1°
8 km/h
Thu
23
🌧️
17.6°
9.4°
5 km/h
Summit elevation (1831m) • ECMWF model
Season vs Historic
Updated Tue, Jul 14, 08:04 AM UTC
0cm
Season Total
This Season to Date
—
vs 5-Year Avg
Off-season · 1099cm full-season avg
—
vs 30-Year Avg
Off-season · 1099cm full-season avg
1099cm
5-Yr Avg by Now
Snowfall over the past five years has averaged 1185.3 cm, significantly exceeding the 30-year average of 665.7 cm, indicating a marked upward trend in recent snowfall. The current season's snowfall is 81% of the recent 5-year average but remains 44% above the long-term 30-year average, suggesting a moderate decrease from recent peaks yet still elevated compared to historical norms. Notably, the 2021 season stands out as an anomaly with exceptionally high snowfall at 1368.6 cm, while the subsequent years have shown a slight decline, though still well above long-term averages.
Happo-One Snow History
Average annual snowfall is 613cm with an average of 123 snowfall days per season. The table below shows monthly averages across 30 seasons of archive data (modeled snowpack at mid-elevation).
| Month | Avg Snowfall | Snowfall Days | Avg Base Depth | Max Base Depth | Biggest Snowfall |
|---|---|---|---|---|---|
| November | 42.4cm | 12 days | 6cm | 22cm | 10cm |
| December | 145.1cm | 26 days | 55cm | 103cm | 18.9cm |
| January | 170cm | 28 days | 137cm | 174cm | 20.6cm |
| February | 123.1cm | 23 days | 182cm | 206cm | 19cm |
| March | 97.6cm | 22 days | 194cm | 219cm | 17.4cm |
| April | 29.7cm | 10 days | 143cm | 190cm | 10.2cm |
| May | 1.8cm | 1 days | 29cm | 86cm | 2.7cm |
Source: SnowSure archive · Open-Meteo ERA5 reanalysis at mid-elevation. Depth is modeled, not resort-reported.
Season at a Glance
Next season(2026-27)
Opens Dec 1, 2026
Multi-season averages will appear once SnowSure has tracked more than one full season.
Best Months to Visit
January
Peak Powder
February
Peak Powder
March
Good
December
Good
Note: Based on typical powder season patterns for this region.
