Zao Onsen

Measured by us across 3,069 ski areas by one identical method. These are not the resort’s own published figures.

The quality score deliberately excludes how much snow falls — it uses temperature, frequency, rain and wind. Snowing a lot and snowing well are different things.

Counted from the runs and lifts drawn on OpenStreetMap, within the boundary of the ski area. These are not the resort’s own published figures.

See past trail maps on Skimap.org ↗

Source: OpenSkiMap (© OpenStreetMap contributors, ODbL 1.0). How finely ski areas are drawn varies by region, so treat the counts as indicative. Vertical is the difference between the highest and lowest points of the mapped runs and lifts.

Road conditions decide whether you can get there at all. Check before you leave.

Footage remains the copyright of each operator. JAPANSNOWLINE neither stores nor redistributes it.

2 hot spring sources with published analyses lie within 5 km of this ski area, nearest first (the hottest is 64.6 °C).

These are analyses of hot spring sources, not a list of baths you can visit. They date from 1910 to 2005, many from decades ago, so today’s temperature and chemistry may differ. Names are as recorded in Japanese. Temperature and pH bands follow Japan’s standard for analysing hot springs.

Source: processed from the hot spring analysis data in the Geothermal Information Database (GRES-DB), Geological Survey of Japan, AIST

Places within 20 km of this ski area, for a day off the slopes or an evening. Chosen from those most read about on Wikipedia, favouring places with an English Wikipedia article, and listed nearest first.

Based on the Japanese Wikipedia lists of sights in each prefecture, as compiled in travel-log-data (CC BY-SA 4.0). English names from Wikidata (CC0). The content of this section is available under CC BY-SA 4.0.

Accommodation data: OpenStreetMap

• A Historic El Niño Is Forecast. Here Is What the Last Big One Did to Japan's Snow. NOAA gives a very strong El Niño better than a 90% chance this winter. We measured every Japanese ski area across the last 12 winters: El Niño winters ran 88% of normal, and the strongest of the twelve left Japan at 63%. But Hakuba held 92% of its average that winter while Niseko fell to 57%.
• When Is There Snow at Japan's Hot Spring Towns? If you want to sit in an outdoor bath with snow on the ground, the question is when, not just where. We measured the snow depth at 14 Japanese hot spring towns across three winters — arrival, departure, and how many days it is actually deep.
• When Is the Best Time to Ski in Japan? January, measured over twelve winters at 397 ski areas. Last season was not typical — its January ran high and its March ran less than half of normal — so here is the average alongside it, month by month.
• Japan Is Sold on Powder. Measured, It Is the Easiest Big Ski Country to Learn In. Half of Japan's pisted kilometres are graded easy or novice — against 24% in the United States and 28% in Canada. And 255 of Japan's 397 ski areas have a natural hot-spring source within 5 km. Here are the numbers, the caveat about grading, and the resorts where a first-timer gets the most of both.
• Ski and Soak in Japan: Which Ski Areas Have a Hot Spring Source Next Door, and How Hot the Water Is We matched 7,203 analysed hot spring sources to Japan's ski areas. 255 of 397 have one within 5 km, 145 of them at 42 °C or hotter, and 54 have one within 1 km. These are the ski areas that pair top snow with hot water close by, and the ones where the water is strongly acidic.
• Will There Be Snow at Japan's Winter Festivals? Three Winters, Measured Japan's winter festivals are photographed in deep snow. We measured what was actually on the ground during each one across three winters — and checked the 580-year record of a frozen lake that has now failed eight years running.

Updated: 8 Oct 2026, 00:52

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