Greenpia Onuma is a ski area located in Mori Town in the southern region of Hokkaido, Japan's second-largest island and most northernmost prefecture.
This ski area has two pair lifts (690m and 483m), and top to bottom via Panorama, Romance and Family Road courses is 2550m.
Mori Town is in the Oshima subprefecture, within the region known as Donan ('Southern Hokkaido'). Greenpia Onuma is the only ski area in Mori Town, but there are two other ski areas in this region north of Hakodate. They are Hakodate Nanae Snow Park and Niyama Kogen.
Mountain
statistics
Top/peak (m)
442
Vertical (m)
260
Bottom/base (m)
182
Beginner runs (%)
50
Intermediate runs (%)
30
Advanced runs (%)
20
Longest course (m)
2550
Steepest slope (°)
30
Number of courses
6

Ski lifts
2
Ropeway cable car
0
Gondola
0
Quad lift (4-person)
0
Triple lift (3-person)
0
Pair lift (2-person)
2
Single lift (1-person)
0
Surface lift
0
Information
Normal season dates
Greenpia Onuma usually plans to be open from late December until early to mid-March. See below for the actual opening and closing dates in recent seasons.
Normal opening times
Greenpia Onuma is normally open in the daytime from 9:00am until 5:00pm.
Night skiing
Night skiing is from 5:00pm until 8:45pm on Fridays and Saturdays. The Number 1 pair lift operates for night skiing.
Families & children
There is a Kids Course as well as a Sledging Course play area for young children at the base of the ski area featuring two snow escalators (24m and 27m long). There is another sledging area on the other side of the Number 1 lift. Snowmobile driven banana boat rides are available (charged: 1,000 yen adults, 600 yen children).
Lift ticket prices
2025-2026 season
Information for the upcoming 2026-2027 season will be added by December 2026
1 day
Adult: 5,300 yen
Child: 2,300 yen
Senior: 4,300 yen
4 hours
Adult: 4,500 yen
Child: 2,100 yen
Senior: 3,500 yen
2 hours
Adult: 3,500 yen
Child: 1,700 yen
Senior: 2,700 yen
1 lift coupon
Adult: 420 yen
Child: 270 yen
Senior: 320 yen
11 lift coupons
Adult: 4,200 yen
Child: 2,700 yen
Senior: 3,200 yen
Night
Adult: 2,000 yen
Child: 800 yen
Senior: 1,500 yen
Season ticket
Adult: 37,000 yen
Child: 28,000 yen
Senior: 32,000 yen
Pre-school children ride the lifts (and snow escalator) for free.
Guests in the hotel receive a 10% discount on lift tickets
Historical snow depth data
The following ski season and official snow depth data have been independently compiled by SnowJapan for publication on this website. Where available, the data is updated annually after each ski season.
First and last dates of recent seasons
2025-2026 season: 11th January - 8th March (57 days)
2024-2025 season: 1st January - 9th March (68 days)
2023-2024 season: 31st December - 10th March (71 days)
2022-2023 season: 24th December - 12th March (79 days)
2021-2022 season: 31st December - 13th March (73 days)
Deepest recorded snow depth
2025-2026 season: 50cm on 29th-30th January
2024-2025 season: 63cm on 8th February
2023-2024 season: 60cm on 24th-25th January
2022-2023 season: 56cm on 21st January
2021-2022 season: 95cm on 23rd-27th February
2020-2021 season: 130cm on 30th January and 10th-14th February
2019-2020 season: 40cm on 19th-22nd February
2018-2019 season: 100cm on 24th January - 19th February
2017-2018 season: 220cm on 21st February - 3rd March
2016-2017 season: 115cm on 25th February - 1st March
2015-2016 season: 100cm on 17th-18th February
2014-2015 season: 95cm on 12th-16th February and 18th February - 8th March
Resources
Weather & snowfall (Japan Meteorological Agency) [open in new window]
Introduction to the region
Hokkaido is the second-largest and most northerly of Japan's four main islands. It is separated from Aomori Prefecture on the Honshu mainland by the Tsugaru Strait (and connected by the Seikan Tunnel railway).
Hokkaido is the largest prefecture in Japan, forming its own 'region'. Unlike most other prefectures, it is usually referred to simply as 'Hokkaido', rather than 'Hokkaido Prefecture'. Sapporo City is the capital of Hokkaido and is famous for, among other things, the annual Sapporo Snow Festival held in February.
With a colder climate than most of Japan, Hokkaido enjoys some of the most consistent snowfall and conditions in the country. There are more ski areas in Hokkaido than in any other prefecture in Japan, and they are scattered throughout the mountains of the large island.
Hokkaido is home to some of Japan's most famous ski areas. The ski areas in Niseko and Kutchan in the west, and Furano in the central region, have long been popular with Japanese skiers. In recent years, those ski resorts, along with several others, have gained a worldwide reputation and now attract a significant number of overseas visitors.
In striking contrast to the international feel and increasing exclusivity of such resorts, most of the ski areas in Hokkaido are very small. The majority have only one or two ski lifts (often single-person or surface-rope tow lifts), and some are even free to use. Many of these small ski areas are owned and operated by the local village or town and very much cater to locals.

About the information on this page
SnowJapan independently researches, checks and updates the information on this page at least once each year, in the lead-up to every ski season. We also update it whenever we become aware of other changes. The information published on SnowJapan is based on independent research using official Japanese-language sources and is not supplied by ski areas. If you are planning to visit a ski area, we recommend checking the official ski area website for the latest operational information. We take great care to keep the information on SnowJapan accurate and up to date. However, SnowJapan accepts no responsibility for decisions made based on information published on this website.
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