Earthquakes in Japan — August 2026

45 earthquakes were recorded in Japan during August 2026, an average of 1.5 per day.

45 reached magnitude 4 or above and 8 reached magnitude 5 or above. The average focal depth was 62 km.

The month's largest event in Japan was a magnitude 6.0 earthquake near Honchō, Japan on 23 August 2026 at 13:44 UTC. A magnitude 6.0 earthquake radiates roughly 15,080 tons of TNT equivalent in seismic energy.

That is close to the Japan monthly average of 57 events over the period we cover, and down from the 60 recorded the previous month.

82% of events here are shallow (under 70 km), 13% intermediate (70–300 km) and 4% 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 37 in the magnitude 4 range, 7 in the magnitude 5 range, 1 in the magnitude 6 range.

Activity peaked on 08 August, when 5 events were recorded.

The month's largest events were M6.0 near Honchō, Japan on 23 August at 43 km; M5.8 near Toride, Japan on 22 August at 61 km; M5.6 near Noda, Japan on 08 August at 34 km.

That is 21% below the 57 events Japan averages per month across the 21 months on record.