Earthquakes in Indonesia — September 2026

73 earthquakes were recorded in Indonesia during September 2026, an average of 2.4 per day.

73 reached magnitude 4 or above and 20 reached magnitude 5 or above. The average focal depth was 56 km.

The month's largest event in Indonesia was a magnitude 6.5 earthquake near Teluknaga, Indonesia on 11 September 2026 at 21:23 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 71 events over the period we cover, and down from the 186 recorded the previous month.

74% of events here are shallow (under 70 km), 25% intermediate (70–300 km) and 1% deep-focus (over 300 km). The mix is dominated by shallow crustal events, with a minority of intermediate-depth activity.

By band, the catalogue holds 53 in the magnitude 4 range, 19 in the magnitude 5 range, 1 in the magnitude 6 range.

Activity peaked on 14 September, when 6 events were recorded.

The month's largest events were M6.5 near Teluknaga, Indonesia on 11 September at 372 km; M5.6 near Maba, Indonesia on 01 September at 10 km; M5.6 near Abepura, Indonesia on 02 September at 69 km.

That is close to the 71 events Indonesia averages per month across the 23 months on record.