Earthquakes in Japan — July 2025

102 earthquakes were recorded in Japan during July 2025, an average of 3.3 per day.

102 reached magnitude 4 or above and 23 reached magnitude 5 or above. The average focal depth was 56 km.

The month's largest event in Japan was a magnitude 5.6 earthquake near Tatsugō, Japan on 02 July 2025 at 06:26 UTC. A magnitude 5.6 earthquake radiates roughly 3,788 tons of TNT equivalent in seismic energy.

That is well above the Japan monthly average of 57 events over the period we cover — an unusually active month, and up from the 94 recorded the previous month.

83% of events here are shallow (under 70 km), 10% intermediate (70–300 km) and 7% 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 79 in the magnitude 4 range, 23 in the magnitude 5 range.

Activity peaked on 02 July, when 15 events were recorded.

The month's largest events were M5.6 near Tatsugō, Japan on 02 July at 10 km; M5.5 near Tatsugō, Japan on 06 July at 10 km; M5.5 near Tatsugō, Japan on 03 July at 10 km.

That is 79% above the 57 events Japan averages per month across the 21 months on record.