Tsunamis in Costa Rica
2 tsunamis have been recorded in Costa Rica by Global Incident Tracker, 2 of them in 2026. The most recent was on 9 October 2026. These are incidents our sources reported, not an official national total.
Continuous monitoring began 9 August 2026. These counters show what we have recorded since then, not everything that happened.
Thin record. We hold only 2 tsunamis for Costa Rica, which is too few to describe a pattern. This page is not offered to search engines until it holds more.
Most recent tsunamis in Costa Rica
When they happen
October carries the most tsunamis we hold for Costa Rica — 2 of 2. This is when incidents were reported, so read a quiet month as either a quiet month or thin reporting.
| Month | Recorded | |
|---|---|---|
| January | 0 | |
| February | 0 | |
| March | 0 | |
| April | 0 | |
| May | 0 | |
| June | 0 | |
| July | 0 | |
| August | 0 | |
| September | 0 | |
| October | 2 | |
| November | 0 | |
| December | 0 |
Where this data comes from
Tsunamis have official real-time feeds, and ours come from NOAA / PTWC · GDACS.