Earthquakes in Fiji — September 2026

16 earthquakes were recorded in Fiji during September 2026, an average of 0.5 per day.

16 reached magnitude 4 or above and 2 reached magnitude 5 or above. The average focal depth was 498 km.

The month's largest event in Fiji was a magnitude 5.0 earthquake near Fiji region on 03 September 2026 at 18:31 UTC. A magnitude 5.0 earthquake radiates roughly 477 tons of TNT equivalent in seismic energy.

That is close to the Fiji monthly average of 14 events over the period we cover, and up from the 14 recorded the previous month.

12% of events here are shallow (under 70 km), 0% intermediate (70–300 km) and 88% 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 14 in the magnitude 4 range, 2 in the magnitude 5 range.

Activity peaked on 21 September, when 3 events were recorded.

The month's largest events were M5.0 near Fiji region on 03 September at 619 km; M5.0 near Ba, Fiji on 23 September at 10 km; M4.8 near Lautoka, Fiji on 14 September at 10 km.

That is 12% above the 14 events Fiji averages per month across the 23 months on record.