Mount Aso crater still closed (alert level 2 since 1 September 2026): Kusasenri, Daikanbo and the museum are open
This week's news · Checked 2026-09-17
Short answer. You can visit Aso, but not the crater. Mount Aso has been at alert level 2 since 16:00 on 1 September 2026, and entry within about 1 km of the Nakadake first crater is still banned (JMA and the Aso Volcano Disaster Prevention Council, checked 1 November 2026). According to Watabi (14 September 2026), the crater, the Aso Park Road to the rim and the crater shuttle bus are closed, while Kusasenri (free, parking ≈ ¥500), the Daikanbo viewpoint, Komezuka (viewing only) and the Aso Volcano Museum (adults ¥1,300) are open. So plan Aso for the grassland and the caldera, and don't promise the kids the crater until the level drops to 1 and the Aso Park Road reopens.
Checked 1 November 2026: alert level 2 and the 1 km entry ban (JMA, aso-volcano.jp). Other details: Watabi, 14 September 2026, checked 17 September 2026.
What happened. The Japan Meteorological Agency (JMA) lowered the Mount Aso alert level from 3 to 2 on 1 September 2026 at 16:00, after raising it to 3 on 14 August. The 1 km entry ban around the Nakadake crater stays: the crater, the Aso Park Road (toll road to the rim) and the crater shuttle bus are still closed. Crater viewing has been restricted since a sightseeing helicopter crashed into the first crater on 20 January 2026. The Tozan bus from Aso Station to Aso Sanjo Terminal resumed on 2 September (Watabi, citing the Aso Volcano Disaster Prevention Council and JMA, verified 14 September 2026).
What it means for you.
- If Aso is in your October–December plan, don't cancel it: the Kusasenri grassland and lake (free, parking ≈ ¥500), the Daikanbo caldera viewpoint, the Komezuka cone (viewing only) and the Aso Volcano Museum (adults ¥1,300) are all open. That is the view people come for; the crater is only one part of it.
- Don't promise the kids "we'll see the crater" until the level drops to 1 and the Aso Park Road reopens. Check the status that morning on the Aso Volcano Disaster Prevention Council site.
- A car makes it easier: Daikanbo and Kusasenri are far apart and buses are infrequent. The 4-day Fukuoka → Kumamoto → Aso costing is in car rental article #2.
- Without a car, day tours from Fukuoka to Kusasenri and Daikanbo (with Kumamoto Castle) are on Klook; check in the tour details whether the route has changed because of the closure: Klook: Aso & Kumamoto tours from Fukuoka.
Sources
| Item | Source | Checked |
|---|---|---|
| Alert level 2 (crater-area warning) since 16:00 on 1 September 2026; keep out of about 1 km around the Nakadake first crater | Japan Meteorological Agency (JMA), Aso volcano information (in Japanese) — data.jma.go.jp | 1 Nov 2026 |
| 1 km entry ban around the crater still in force | Aso Volcano Disaster Prevention Council (in Japanese) — aso-volcano.jp | 1 Nov 2026 |
| Level raised to 3 on 14 August; crater, Aso Park Road and crater shuttle closed; crater viewing restricted since the helicopter crash on 20 January 2026; Tozan bus to Aso Sanjo Terminal resumed 2 September | Watabi, "Is Mt. Aso's Crater Open? 2026 Closure Status & Access" (in English, citing aso-volcano.jp and JMA) — watabi.org | 14 Sep 2026 (Watabi); 17 Sep 2026 |
| Kusasenri (free, parking ≈ ¥500), Daikanbo, Komezuka (viewing only) and Aso Volcano Museum (adults ¥1,300) open | Watabi (same page) — watabi.org | 14 Sep 2026 (Watabi); 17 Sep 2026 |
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Watabi (citing the Aso Volcano Disaster Prevention Council and JMA), verified 14 September 2026 (in English) · 2026-09-17