Lake Akan Onsen
Open by month
Open in January. No seasonal closure recorded. New Year (Dec 29 – Jan 3): open.
Open in February. No seasonal closure recorded.
Open in March. No seasonal closure recorded.
Open in April. No seasonal closure recorded.
Open in May. No seasonal closure recorded.
Open in June. No seasonal closure recorded.
Open in July. No seasonal closure recorded.
Open in August. No seasonal closure recorded.
Open in September. No seasonal closure recorded.
Open in October — at its best. Marimo Festival with Ainu ceremonies, Oct 8–10 every year; frozen-lake walks in winter.
Open in November. No seasonal closure recorded.
Open in December. No seasonal closure recorded. New Year (Dec 29 – Jan 3): open.
Checked against the official site on 2026-10-12.
A lakeside spa town in Akan-Mashu National Park, home of marimo moss balls and the Akan Ainu Kotan, the Ainu village street.
Nearby
- Lake Onneto ≈ 30 min by car
- Bihoro Pass ≈ 1 h 5 min by car
- Lake Kussharo & Mt. Io ≈ 1 h 15 min by car
- Lake Mashu ≈ 1 h 20 min by car
Travel times are rough estimates by car.
- Best time
- October — Marimo Festival with Ainu ceremonies, Oct 8–10 every year; frozen-lake walks in winter
- Getting there
- Direct bus from Kushiro Airport about 1 hr (3–6 a day)
Few buses — check times or join a tour - Fee
- Free to walk around
- Good to know
- Few buses; more run from spring to autumn
- Time needed
- 4 h
Checked against the official Japanese website on 2026-10-12. Report outdated info