Itamuro Onsen — Spring Water Analysis, Temperature and Snowfall
板室温泉 · Tochigi
Itamuro Onsen (板室温泉) is a nationally designated onsen town in Tochigi. We measured how much snow its winters bring, using the same method as for the 3,069 ski areas on this site.
How this place came to be
At the western end of the Nasu range, in the uppermost valley of the Naka river. Nasu Saburo Munashige is said to have found the spring while hunting deep in the mountains in the third month of 1059. It is one of the seven springs of Nasu, and was long called "the medicine bath of Shimotsuke." The older inns began as something the village families ran in retirement — a second occupation for old age.
The cure-taking character is still strong, and yet contemporary art is scattered through the village. Since 2015, when the town adopted the theme "bathing culture, daily culture, and the culture of art," the road from Kuroiso station up to the village has doubled as an exhibition route, and individual inns hold their own shows. Every bath but the municipal one is free-flowing from the source, with no recirculation.
Since 2014 nine of the inns have taken part in the pink ribbon campaign and allow bathing in a bathing garment — so that women who have had breast surgery can come. Some inns also keep a bath that can be reserved privately.
In September 2021 Itamuro was registered as a Zero Carbon Park by the Ministry of the Environment, the first in Tochigi and the third in Japan. Waste heat from the springs is being put back to work.
Sources: 環境省 板室温泉 国民保養温泉地計画書
Snowfall in winter
| Per season | 84 cm |
| Rank | 47 of 77 ranked onsen |
| Within prefecture | 2 of 2 in Tochigi |
| Against the median of 77 | -34 cm median 118 cm |
| Winter to winter | 65 cm 56–121 cm, leanest to deepest of twelve |
Find a place to stay · Open in maps
"Find a place to stay" searches Rakuten Travel and contains advertising; we may earn a commission on bookings made through it. The snowfall figures and ranking are calculated independently of that.
We do not link to an official site. We have not verified URLs for all 79 towns, and guessing would send you somewhere wrong. They will be added once checked.
More places to look
Just the bath
Day passes for hot springs are sold through Asoview. Japanese only.
The list covers the whole prefecture — it cannot be narrowed to this town.
Hot springs nearby, as analysed
2 hot spring sources with published analyses lie within 3 km of the centre of this onsen town, nearest first.
| Source | Distance | Temperature | pH | Type | Analysed |
|---|---|---|---|---|---|
| 板室板室温泉17号 | 0.1 km | 49.7℃ hot | 8.9 alkaline | alkaline simple | — |
| 新那須東京建物2号 | 2.7 km | 30.1℃ lukewarm | 8 mildly alkaline | simple | — |
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
Worth seeing nearby
Places within 20 km of this onsen town, chosen from those most read about on Wikipedia, favouring places with an English Wikipedia article, and listed nearest first.
| Place | Type | Distance |
|---|---|---|
| Miyama Dam深山ダム | Nature | 3.1 km |
| 那須ハイランドパーク | Leisure | 3.6 km |
| Nasu Safari Park那須サファリパーク | Museum | 7.3 km |
| Nasu Yuzen Shrine那須温泉神社 | Shrine | 7.6 km |
| Sesshō-seki殺生石 | Nature | 7.7 km |
| Mount Nasu那須岳 | Mountain | 9.6 km |
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.
Ski areas nearby
Up to five within 40 km, straight-line, nearest first. Quality rank is out of the 397 Japanese ski areas.
| Ski area | Distance | Quality rank |
|---|---|---|
| Grandee Hatoriko Ski Resort | 18 km | 135 of 397 |
| Hunter Mountain Shiobara Ski Area | 21 km | 175 of 397 |
| Edelweiss Ski Resort | 22 km | 180 of 397 |
| Ski Resort Tenei | 23 km | 244 of 397 |
| Aizu Kogen Takatsue Ski Resort | 26 km | 46 of 397 |
These snowfall figures are estimates
The snowfall shown here is an estimate produced by a weather model, not a record of what actually fell.
We compared it against 63 Japan Meteorological Agency weather stations to see how far off it is. On average it comes to about six tenths of the real figure — it runs low. And it runs low by different amounts in different places: some read barely a third of what was measured, others match almost exactly. Mountains tend to read lowest.
We tried scaling everything up by a fixed amount to correct for it. It barely helped, because the error differs from place to place.
So treat these numbers as a guide to roughly where somewhere sits, not a precise figure. There is no meaning in the gap between first and second, or between 30th and 35th. Large differences between regions are real and can be read as they are.
We considered correcting the figures against the observations. But this ranking covers 3,069 ski areas across ten countries, and only Japan can be checked against weather stations. Correcting Japan alone would lift Japanese resorts above the Alps and North America with nothing behind it. Every place here is measured the same way instead.
Where a nearby weather station can be used, we print what it actually recorded on that ski area's own page.