Earthquakes in Tonga — July 2026
20 earthquakes were recorded in Tonga during July 2026, an average of 0.6 per day.
20 reached magnitude 4 or above and 7 reached magnitude 5 or above. The average focal depth was 189 km.
The month's largest event in Tonga was a magnitude 5.7 earthquake near Hihifo, Tonga on 01 July 2026 at 21:13 UTC. A magnitude 5.7 earthquake radiates roughly 5,351 tons of TNT equivalent in seismic energy.
That is close to the Tonga monthly average of 18 events over the period we cover, and down from the 23 recorded the previous month.
40% of events here are shallow (under 70 km), 30% intermediate (70–300 km) and 30% 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 13 in the magnitude 4 range, 7 in the magnitude 5 range.
Activity peaked on 11 July, when 3 events were recorded.
The month's largest events were M5.7 near Hihifo, Tonga on 01 July at 266 km; M5.4 near Neiafu, Tonga on 29 July at 10 km; M5.4 near ‘Ohonua, Tonga on 08 July at 10 km.
That is close to the 18 events Tonga averages per month across the 21 months on record.
Largest earthquakes in Tonga, July 2026
20 events listed below, newest first. Times are UTC. Click any column header to re-sort.
Frequently asked questions
How many earthquakes hit Tonga in July 2026?
20 earthquakes were recorded in Tonga during July 2026, of which 20 were magnitude 4 or above.
What was the biggest earthquake in Tonga in July 2026?
A magnitude 5.7 event near Hihifo, Tonga on 01 July 2026.
Other months in Tonga
Magnitudes for July 2026 reflect the current USGS review status and may have been revised since first publication. See our guides on the magnitude scale, focal depth and why earthquakes cluster.