Earthquakes in Indonesia — August 2025

63 earthquakes were recorded in Indonesia during August 2025, an average of 2.0 per day.

63 reached magnitude 4 or above and 14 reached magnitude 5 or above. The average focal depth was 101 km.

The month's largest event in Indonesia was a magnitude 6.5 earthquake near Abepura, Indonesia on 12 August 2025 at 08:24 UTC. A magnitude 6.5 earthquake radiates roughly 84,802 tons of TNT equivalent in seismic energy.

That is close to the Indonesia monthly average of 70 events over the period we cover, and down from the 88 recorded the previous month.

54% of events here are shallow (under 70 km), 38% intermediate (70–300 km) and 8% 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 49 in the magnitude 4 range, 12 in the magnitude 5 range, 2 in the magnitude 6 range.

Activity peaked on 12 August, when 6 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 M6.5 near Abepura, Indonesia on 12 August at 10 km; M6.3 near Abepura, Indonesia on 12 August at 10 km; M5.8 near Sinabang, Indonesia on 23 August at 10 km.

That is 10% below the 70 events Indonesia averages per month across the 21 months on record.