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About Secret Ski Map

A map for skiers who travel Japan for more than the runs — the onsen town, the izakaya, the shrine on the ridge, the quiet valley two stops past the famous one. We map ski + food + culture + onsen + akiya across all 417 resorts in Japan, and lean toward the road less travelled.

How it's built — methodology

Everything on the map is computed from named sources, not hand-waved. Where a field is blank it means we don't have the data yet — not that there is nothing there. We never invent numbers.

Resorts & lift infrastructure
OpenStreetMap (Overpass) + curated detail for the home regions
Snowfall
Japan Meteorological Agency climate normals 1991–2020 (nearest snow-observing station; valley stations sit below the ski base, so a resort receives at least the figure shown)
Onsen & heritage / culture
Wikidata + OpenStreetMap, with Wikimedia Commons imagery
Nightly accommodation prices
Rakuten Travel API — real ¥/night near each resort
Accommodation, dining & coffee (rated)
Google Places (ratings/review counts) layered over OSM coverage
Akiya (houses for sale)
Prefecture akiya banks with coordinates + price (Nagano, Hokkaido, Niigata); listings without coordinates are skipped

The scores

Scores are transparent and data-derived. We benchmark our per-resort depth against Powderhounds, skigrade.com and japow.travel — and differentiate on the culture/food/onsen/akiya combination the big sites skip.

Independent & honest

We are not a booking agency. Some accommodation and experience links are affiliate links — we may earn a commission at no extra cost to you — but commission never influences which resorts we recommend or how they score. See our affiliate disclosure.

Questions, corrections or a resort we've missed? Get in touch — the map improves when the data does.