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Earthquakes in Japan — August 2026

59 earthquakes were recorded in Japan during August 2026, an average of 1.9 per day.

59 reached magnitude 4 or above and 11 reached magnitude 5 or above. The average focal depth was 59 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 56 events over the period we cover, and down from the 60 recorded the previous month.

83% of events here are shallow (under 70 km), 14% intermediate (70–300 km) and 3% 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 48 in the magnitude 4 range, 10 in the magnitude 5 range, 1 in the magnitude 6 range.

Activity peaked on 01 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 Ōfunato, Japan on 26 August at 16 km.

That is close to the 56 events Japan averages per month across the 23 months on record.

Events recorded59
StrongestM6.0
Average depth59 km
Magnitude 4+59
Magnitude 5+11

Largest earthquakes in Japan, August 2026

59 events listed below, newest first. Times are UTC. Click any column header to re-sort.

Time (UTC) Mag Location Depth (km) Country Details
6.0 Honchō, Japan 42.9 Japan View details View
5.8 Toride, Japan 61.0 Japan View details View
5.6 Ōfunato, Japan 16.1 Japan View details View
5.6 Noda, Japan 34.0 Japan View details View
5.5 Volcano Islands, Japan 40.0 Japan View details View
5.5 Mutsu, Japan 82.3 Japan View details View
5.4 Tateyama, Japan 61.7 Japan View details View
5.4 Yamada, Japan 10.0 Japan View details View
5.3 Volcano Islands, Japan 10.0 Japan View details View
5.2 Tsunō, Japan 26.2 Japan View details View
5.0 Nemuro, Japan 96.9 Japan View details View
4.9 Taira, Japan 10.0 Japan View details View
4.9 Honmachi, Japan 10.0 Japan View details View
4.9 Honmachi, Japan 10.0 Japan View details View
4.9 Matsubase, Japan 10.0 Japan View details View
4.8 Koshima, Japan 35.0 Japan View details View
4.8 Miyako, Japan 34.9 Japan View details View
4.8 Kuji, Japan 63.8 Japan View details View
4.8 Miyako, Japan 10.0 Japan View details View
4.8 Katsuura, Japan 10.0 Japan View details View
4.8 Bonin Islands, Japan 516.4 Japan View details View
4.8 Mutsu, Japan 59.6 Japan View details View
4.8 Koseda, Japan 45.0 Japan View details View
4.8 Honchō, Japan 62.6 Japan View details View
4.8 Noda, Japan 56.4 Japan View details View
4.7 Hasaki, Japan 34.8 Japan View details View
4.7 Tomioka, Japan 35.0 Japan View details View
4.7 Miyakojima, Japan 10.0 Japan View details View
4.7 Onna, Japan 44.1 Japan View details View
4.7 Tomioka, Japan 50.2 Japan View details View
4.6 Shizunai-furukawachō, Japan 63.7 Japan View details View
4.6 Takatsuki, Japan 370.5 Japan View details View
4.6 Honmachi, Japan 10.0 Japan View details View
4.6 Miyako, Japan 10.0 Japan View details View
4.6 Matsubase, Japan 10.0 Japan View details View
4.6 Onagawa Chō, Japan 40.4 Japan View details View
4.6 Honmachi, Japan 10.0 Japan View details View
4.6 Honmachi, Japan 10.0 Japan View details View
4.5 Urakawa, Japan 63.6 Japan View details View
4.5 Hirara, Japan 131.7 Japan View details View
4.5 Bonin Islands, Japan 10.0 Japan View details View
4.5 Miyako, Japan 35.0 Japan View details View
4.4 Kuji, Japan 67.1 Japan View details View
4.4 Tomioka, Japan 24.1 Japan View details View
4.4 Amagi, Japan 90.8 Japan View details View
4.4 Uken, Japan 227.9 Japan View details View
4.4 Maibara, Japan 10.0 Japan View details View
4.4 Kuji, Japan 43.5 Japan View details View
4.4 Shimoda, Japan 105.4 Japan View details View
4.4 Volcano Islands, Japan 35.0 Japan View details View
4.3 Hitachi, Japan 47.8 Japan View details View
4.3 Karatsu, Japan 10.0 Japan View details View
4.3 Nishinoomote, Japan 35.0 Japan View details View
4.3 Amakusa, Japan 10.0 Japan View details View
4.3 Gojōnome, Japan 173.1 Japan View details View
4.3 Urakawa, Japan 64.6 Japan View details View
4.2 Imabetsu, Japan 138.0 Japan View details View
4.2 Kushiro, Japan 35.0 Japan View details View
4.2 Takahagi, Japan 10.0 Japan View details View

Frequently asked questions

How many earthquakes hit Japan in August 2026?

59 earthquakes were recorded in Japan during August 2026, of which 59 were magnitude 4 or above.

What was the biggest earthquake in Japan in August 2026?

A magnitude 6.0 event near Honchō, Japan on 23 August 2026.

Other months in Japan

Magnitudes for August 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.