Earthquakes in Costa Rica — August 2025
2 earthquakes were recorded in Costa Rica during August 2025, an average of 0.1 per day.
1 reached magnitude 4 or above and 0 reached magnitude 5 or above. The average focal depth was 64 km.
The month's largest event in Costa Rica was a magnitude 4.8 earthquake near Quesada, Costa Rica on 01 August 2025 at 19:33 UTC. A magnitude 4.8 earthquake radiates roughly 239 tons of TNT equivalent in seismic energy.
That is below the Costa Rica monthly average of 3 events over the period we cover — a comparatively quiet month, and down from the 4 recorded the previous month.
50% of events here are shallow (under 70 km), 50% intermediate (70–300 km) and 0% deep-focus (over 300 km). A substantial share of intermediate-depth events points to a subducting slab beneath the region rather than purely crustal faulting.
By band, the catalogue holds 1 in the magnitude 3 range, 1 in the magnitude 4 range.
The month's largest events were M4.8 near Quesada, Costa Rica on 01 August at 116 km; M3.8 near San José, Costa Rica on 22 August at 11 km.
That is 31% below the 3 events Costa Rica averages per month across the 20 months on record.
Largest earthquakes in Costa Rica, August 2025
2 events listed below, newest first. Times are UTC. Click any column header to re-sort.
| Time (UTC) | Mag | Location | Depth (km) | Country | Details |
|---|---|---|---|---|---|
| 4.8 | Quesada, Costa Rica | 116.3 | Costa Rica | View details View | |
| 3.8 | San José, Costa Rica | 11.3 | Costa Rica | View details View |
Frequently asked questions
How many earthquakes hit Costa Rica in August 2025?
2 earthquakes were recorded in Costa Rica during August 2025, of which 1 were magnitude 4 or above.
What was the biggest earthquake in Costa Rica in August 2025?
A magnitude 4.8 event near Quesada, Costa Rica on 01 August 2025.
Other months in Costa Rica
Magnitudes for August 2025 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.