Number of tsunamis in Tonga
Tonga: Number of tsunamis was 4 events in 2022. ◆ Volatile
Number of tsunamis in Tonga, 1865–2022
Source: National Geophysical Data Center / World Data Service (2025) – with major processing by Our World in Data. Measured in events.
Analysis
The most recent figure for number of tsunamis in Tonga is 4 events, measured in 2022. That is the highest value across all 11 years on record.
That represents a change of up 300.0% over ten years.
Over the whole period, number of tsunamis in Tonga peaked at 4 events in 2022 and was at its lowest, 1 events, in 1865.
Tonga ranks 1st of 38 countries on this measure, in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
Number of tsunamis in Tonga, year by year
| Year | events | Change |
|---|---|---|
| 1865 | 1 events | — |
| 1892 | 1 events | +0.0% |
| 1919 | 1 events | +0.0% |
| 1948 | 1 events | +0.0% |
| 1977 | 1 events | +0.0% |
| 1982 | 1 events | +0.0% |
| 1987 | 1 events | +0.0% |
| 1997 | 1 events | +0.0% |
| 2006 | 1 events | +0.0% |
| 2009 | 1 events | +0.0% |
| 2022 | 4 events | +300.0% |
Tonga compared with similar countries
- Tonga's 4 events is above the median for upper middle income countries, which is 1 events, 4.0× the median. (12 countries reporting)
- Tonga's 4 events is above the median for East Asia & Pacific, which is 1 events, 4.0× the median. (13 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1860s | 1 events | 1 events | 1 events | 1 |
| 1890s | 1 events | 1 events | 1 events | 1 |
| 1910s | 1 events | 1 events | 1 events | 1 |
| 1940s | 1 events | 1 events | 1 events | 1 |
| 1970s | 1 events | 1 events | 1 events | 1 |
| 1980s | 1 events | 1 events | 1 events | 2 |
| 1990s | 1 events | 1 events | 1 events | 1 |
| 2000s | 1 events | 1 events | 1 events | 2 |
| 2020s | 4 events | 4 events | 4 events | 1 |
Countries ranked near Tonga
More reference data data for Tonga
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 0.0105 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 0.0092 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 0.0197 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 0.0197 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 0.0353 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 0.0269 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 0.0446 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 0.1068 (2050)
- Emission Totals - Emissions (N2O) - Agricultural Soils 0.0799 (2050)
- Emission Totals - Emissions (CO2eq) from N2O (AR5) - Manure applied 9.35 (2050)
Frequently asked questions
- What is number of tsunamis in Tonga?
- Number of tsunamis in Tonga was 4 events in 2022, according to National Geophysical Data Center / World Data Service (2025) – with major processing by Our World in Data.
- What is the highest number of tsunamis recorded in Tonga?
- The highest recorded value was 4 events in 2022.
- What is the lowest number of tsunamis recorded in Tonga?
- The lowest recorded value was 1 events in 1865.
- How does Tonga rank for number of tsunamis?
- Tonga ranks 1st out of 38 countries with data for 2022.
- Is number of tsunamis rising or falling in Tonga?
- Over the last ten years it is up 300.0%. The long-run trend across the full record is volatile.
- Where does this Tonga data come from?
- The figures come from National Geophysical Data Center / World Data Service (2025) – with major processing by Our World in Data, published as part of Number of tsunamis. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 11 observations, free to reuse under CC BY 4.0 (Our World in Data).