What was erupting in the year...?
There were 63 confirmed eruptions at some point during 1966 from 60 different volcanoes; 35 of those were new eruptions that started during the year. A stop date with "(continuing)" indicates that the eruption was considered to be ongoing as of the date indicated. Data is reported through the last data update (30 December 2025). Information about more recent eruptions can be found in the Smithsonian / USGS Weekly Volcanic Activity Report.
| Volcano | Country | Eruption Start Date | Eruption Stop Date | Eruption Type | Max VEI |
|---|---|---|---|---|---|
| Kuchinoerabujima | Japan | 1966 Nov 22 | 1966 Nov 22 | Explosive / Effusive | 2 |
| Whakaari/White Island | New Zealand | 1966 Nov 13 | 1967 Mar 16 ± 15 days | Explosive / Effusive | 3 |
| Rincon de la Vieja | Costa Rica | 1966 Nov 6 (?) | 1967 Dec 16 ± 15 days | Explosive / Effusive | 3 |
| Izalco | El Salvador | 1966 Oct 28 | 1966 Nov 16 ± 15 days | Explosive / Effusive | 0 |
| Redoubt | United States | 1966 Oct 7 | 1967 Jan 15 | Explosive / Effusive | 3 |
| Lokon-Empung | Indonesia | 1966 Sep 24 | 1966 Sep 30 (?) | Explosive / Effusive | 2 |
| Awu | Indonesia | 1966 Aug 12 | 1966 Oct 16 ± 15 days | Explosive / Effusive | 4 |
| Fuego | Guatemala | 1966 Aug 12 | 1966 Aug 13 | Explosive / Effusive | 3 |
| San Miguel | El Salvador | 1966 Jul 16 ± 15 days | Unknown | 2 | |
| Taal | Philippines | 1966 Jul 5 | 1966 Aug 4 | Explosive / Effusive | 3 |
| Gaua | Vanuatu | 1966 Jul 2 ± 182 days | Unknown | 2 | |
| Trident | United States | 1966 Jul 2 (?) ± 182 days | Unknown | 0 | |
| Slamet | Indonesia | 1966 Jul 2 ± 182 days | Unknown | 2 | |
| Telica | Nicaragua | 1966 Jun 16 ± 15 days | 1966 Jun 16 ± 15 days | Explosive / Effusive | 1 |
| Akan | Japan | 1966 Jun 15 ± 5 days | 1966 Jun 15 ± 5 days | Explosive / Effusive | 1 |
| Kerinci | Indonesia | 1966 Jun 9 | 1966 Jun 30 (on or after) | Explosive / Effusive | 2 |
| Soputan | Indonesia | 1966 May 21 | 1967 Nov 16 ± 15 days | Explosive / Effusive | 3 |
| Kick 'em Jenny | Grenada | 1966 May 5 | 1966 Aug 6 | Explosive / Effusive | 0 |
| Batur | Indonesia | 1966 Apr 28 | Unknown | 1 | |
| Kelud | Indonesia | 1966 Apr 26 | 1966 Apr 27 | Explosive / Effusive | 4 |
| Ruby | United States | 1966 Apr 21 ± 7 days | 1966 May 16 ± 15 days | Submarine | 1 |
| Tolbachik | Russia | 1966 Apr 15 ± 45 days | Unknown | 2 | |
| Ruapehu | New Zealand | 1966 Apr 4 | 1966 Sep 27 | Explosive / Effusive | 1 |
| Rinjani | Indonesia | 1966 Mar 28 | 1966 Aug 8 | Explosive / Effusive | 1 |
| Bagana | Papua New Guinea | 1966 Mar 20 | 1967 Nov 30 | Explosive / Effusive | 3 |
| Kavachi | Solomon Islands | 1966 Mar 19 | 1966 Mar 22 (on or after) | Explosive / Effusive | 2 |
| Marapi | Indonesia | 1966 Mar 16 ± 15 days | 1966 Jun 16 ± 15 days | Explosive / Effusive | 1 |
| Piton de la Fournaise | France | 1966 Mar 15 | 1966 May 15 | Explosive / Effusive | 2 |
| Pavlof | United States | 1966 Mar 15 | Unknown | 2 | |
| Rocard | France | 1966 Mar 9 | 1966 Mar 20 | Submarine | 0 |
| Sangeang Api | Indonesia | 1966 Feb 28 | 1966 Nov 16 ± 15 days | Explosive / Effusive | 2 |
| San Miguel | El Salvador | 1966 Feb 22 | Unknown | 2 | |
| Fuego | Guatemala | 1966 Feb 7 | 1966 May 1 | Explosive / Effusive | 3 |
| Redoubt | United States | 1966 Jan 24 | 1966 Feb 20 | Explosive / Effusive | 3 |
| Etna | Italy | 1966 Jan 10 | 1971 Jun 12 | Explosive / Effusive | 2 |
| Izu-Oshima | Japan | 1965 Nov 25 | 1966 Jun 13 | Explosive / Effusive | 1 |
| Tinakula | Solomon Islands | 1965 Nov 23 | 1966 Jun 11 | Explosive / Effusive | 3 |
| Masaya | Nicaragua | 1965 Oct 10 (?) | 1985 Apr 16 (?) ± 15 days | Explosive / Effusive | 1 |
| Klyuchevskoy | Russia | 1965 Aug 16 ± 15 days | 1966 Dec 26 | Explosive / Effusive | 3 |
| Suretamatai | Vanuatu | 1965 Aug 9 | 1966 Jul 2 ± 182 days | Explosive / Effusive | 2 |
| Pacaya | Guatemala | 1965 Jul 4 | 1989 Mar 10 | Explosive / Effusive | 3 |
| Manam | Papua New Guinea | 1965 Jul 2 ± 182 days | 1966 Jan 25 (on or after) | Explosive / Effusive | 2 |
| Karymsky | Russia | 1965 May 15 ± 5 days | 1967 Feb 16 ± 15 days | Explosive / Effusive | 3 |
| Karangetang | Indonesia | 1965 Apr 5 ± 4 days | 1967 Jun 16 ± 15 days | Explosive / Effusive | 2 |
| Bezymianny | Russia | 1965 Mar 9 | 1970 Mar 16 ± 15 days | Explosive / Effusive | 3 |
| Langila | Papua New Guinea | 1964 Dec 4 ± 4 days | 1966 Sep 23 ± 3 days | Explosive / Effusive | 2 |
| Asosan | Japan | 1964 Oct 16 ± 15 days | 1966 Dec 16 ± 15 days | Explosive / Effusive | 2 |
| Southern EPR at 8°S | Undersea Features | 1964 Jul 2 (?) ± 182 days | 1969 Jul 2 (?) ± 182 days | Submarine | 0 |
| Ambrym | Vanuatu | 1964 Feb 16 (?) ± 15 days | 1966 Sep 16 (on or after) ± 15 days | Explosive / Effusive | 2 |
| Paluweh | Indonesia | 1963 Dec 31 | 1966 Mar 16 | Explosive / Effusive | 2 |
| Vestmannaeyjar | Iceland | 1963 Nov 8 | 1967 Jun 5 | Explosive / Effusive | 3 |
| Colima | Mexico | 1963 Jul 2 ± 182 days | 1970 Jul 2 ± 182 days | Explosive / Effusive | 1 |
| Rumble III | New Zealand | 1963 Jan 16 ± 15 days | 1966 Dec 16 (on or after) ± 15 days | Explosive / Effusive | 0 |
| Ol Doinyo Lengai | Tanzania | 1960 Mar 16 (on or before) ± 15 days | 1966 Nov 28 ± 30 days | Explosive / Effusive | 3 |
| Lascar | Chile | 1959 Nov 16 ± 15 days | 1968 Jan 31 (on or after) | Explosive / Effusive | 2 |
| Suwanosejima | Japan | 1956 Nov 16 ± 15 days | 1984 May 16 ± 15 days | Explosive / Effusive | 2 |
| Aira | Japan | 1955 Oct 13 | 2016 Aug 22 | Explosive / Effusive | 3 |
| Sangay | Ecuador | 1934 Aug 8 | 2011 Mar 2 | Explosive / Effusive | 3 |
| Stromboli | Italy | 1934 Feb 2 | 2025 Dec 17 (continuing) | Explosive / Effusive | 2 |
| Dukono | Indonesia | 1933 Aug 13 | 2025 Dec 17 (continuing) | Explosive / Effusive | 3 |
| Nyiragongo | DR Congo | 1927 Mar 16 ± 15 days | 1977 Jan 10 | Lava Lake | 1 |
| Santa Maria | Guatemala | 1922 Jun 22 | 2025 Dec 17 (continuing) | Explosive / Effusive | 3 |
| Yasur | Vanuatu | 1270 ± 110 years | 2025 Dec 17 (continuing) | Explosive / Effusive | 3 |
List of Questions
Global Volcanism Program, 2025. [Database] Volcanoes of the World (v. 5.3.4; 30 Dec 2025). Distributed by Smithsonian Institution, compiled by Venzke, E. https://doi.org/10.5479/si.GVP.VOTW5-2025.5.3
