Earthquakes in Vanuatu — September 2025

15 earthquakes were recorded in Vanuatu during September 2025, an average of 0.5 per day.

15 reached magnitude 4 or above and 9 reached magnitude 5 or above. The average focal depth was 74 km.

The month's largest event in Vanuatu was a magnitude 6.8 earthquake near Vanuatu region on 08 September 2025 at 21:47 UTC. A magnitude 6.8 earthquake radiates roughly 239,006 tons of TNT equivalent in seismic energy.

That is close to the Vanuatu monthly average of 12 events over the period we cover, and up from the 13 recorded the previous month.

60% of events here are shallow (under 70 km), 40% intermediate (70–300 km) and 0% deep-focus (over 300 km). A substantial share of intermediate-depth events points to a subducting slab beneath the region rather than purely crustal faulting.

By band, the catalogue holds 6 in the magnitude 4 range, 7 in the magnitude 5 range, 2 in the magnitude 6 range.

Activity peaked on 12 September, when 3 events were recorded.

2 event(s) this month carry a USGS link to NOAA tsunami information; the flag does not indicate whether a tsunami occurred.

The month's largest events were M6.8 near Vanuatu region on 08 September at 10 km; M6.4 near Vanuatu region on 08 September at 10 km; M5.5 near Sola, Vanuatu on 27 September at 70 km.

That is 20% above the 12 events Vanuatu averages per month across the 21 months on record.