Volcano · Indonesia
Semeru
Java's highest mountain, erupting near-continuously.
Status right now
No current reports
Semeru is not in the latest Smithsonian weekly report or the GDACS volcano alerts. That usually means it is quiet, but not every change is reported straight away. For official alerts, follow the local volcano observatory.
Checked 4 Nov 2026, 22:37 UTC.
Key facts
- Country
- Indonesia
- Region
- Asia
- Type
- Stratovolcano
- Summit
- 3,657 m (11,998 ft)
- Coordinates
- 8.108° S, 112.922° E
- Smithsonian number
- 263300
What kind of volcano is it?
Semeru is a stratovolcano. A stratovolcano is a tall, steep cone built from layers of lava, ash and rock from many eruptions. Its sticky magma traps gas, so eruptions are often explosive, with ash columns and fast-moving pyroclastic flows.
Eruption history
| Date | VEI | Deaths | Also |
|---|---|---|---|
| 4 Dec 2022 | 4 | – | – |
| 4 Dec 2021 | 4 | 45 | – |
| 28 Dec 2010 | 3 | – | – |
| 8 Jun 2004 | 2 | – | – |
| 2002 | 3 | 3 | – |
| 27 Jul 2000 | 3 | 2 | – |
| 2 Sept 1997 | 3 | 2 | – |
| 3 Feb 1994 | 3 | 6 | – |
| 1992 | 3 | 3 | – |
| 30 Jul 1988 | 3 | 1 | – |
| 10 May 1985 | 3 | 70 | – |
| 29 Mar 1981 | 3 | 1 | – |
| 14 May 1981 | 3 | 372 | – |
| 19 Sept 1978 | 3 | 12 | – |
| 31 Aug 1976 | 2 | 119 | – |
| 31 Aug 1967 | 3 | 3 | – |
| 5 May 1963 | 2 | 1 | – |
| 28 Aug 1950 | 1 | 6 | – |
| 29 Oct 1946 | 2 | – | – |
| Feb 1946 | 2 | 6 | – |
| 21 Sept 1941 | 2 | – | – |
| 23 Jun 1913 | 2 | – | – |
| 8 Nov 1911 | 3 | – | – |
| 29 Aug 1909 | 2 | 221 | – |
| 22 May 1895 | 2 | 80 | – |
| 18 Apr 1885 | 2 | 74 | – |
| Apr 1860 | 2 | – | – |
27 significant eruptions near Semeru in NOAA's Global Significant Volcanic Eruptions Database, which lists eruptions that caused deaths, damage or a tsunami, or were VEI 6 or larger. VEI is the Volcanic Explosivity Index, from 0 to 8.
Nearby volcanoes
- MerapiIndonesia · 280 km
- AgungIndonesia · 286 km
- KrakatauIndonesia · 857 km
- LewotobiIndonesia · 1,085 km
- MarapiIndonesia · 1,625 km
- IbuIndonesia · 1,949 km
Not an official warning service. In an emergency, follow your local authorities.