Earthquakes in Indonesia — October 2025

76 earthquakes were recorded in Indonesia during October 2025, an average of 2.5 per day.

76 reached magnitude 4 or above and 15 reached magnitude 5 or above. The average focal depth was 89 km.

The month's largest event in Indonesia was a magnitude 6.7 earthquake near Abepura, Indonesia on 16 October 2025 at 05:48 UTC. A magnitude 6.7 earthquake radiates roughly 169,203 tons of TNT equivalent in seismic energy.

That is close to the Indonesia monthly average of 70 events over the period we cover, and up from the 62 recorded the previous month.

64% of events here are shallow (under 70 km), 29% intermediate (70–300 km) and 7% deep-focus (over 300 km). That proportion of deep-focus events is the signature of a subduction zone: only a cold slab descending into the mantle stays brittle enough to rupture at those depths.

By band, the catalogue holds 61 in the magnitude 4 range, 13 in the magnitude 5 range, 2 in the magnitude 6 range.

Activity peaked on 16 October, when 7 events were recorded.

1 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 M6.7 near Abepura, Indonesia on 16 October at 70 km; M6.5 near Abepura, Indonesia on 16 October at 35 km; M5.6 near Tual, Indonesia on 23 October at 93 km.

That is close to the 70 events Indonesia averages per month across the 21 months on record.