Annual precipitation in American Samoa
American Samoa: Annual precipitation was 2,994 millimeters in 2025. ▲ Rising
Annual precipitation in American Samoa, 1940–2025
Source: Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data. Measured in millimeters.
Analysis
American Samoa recorded 2,994 millimeters for annual precipitation in 2025.
The figure is up 13.8% on the previous year and up 22.0% over ten years.
Over the whole period, annual precipitation in American Samoa peaked at 3,576 millimeters in 1941 and was at its lowest, 1,704 millimeters, in 1983.
American Samoa ranks 12th of 192 countries on this measure, in the top 10%.
The long-run direction has been consistently rising across the 86 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1940s | 2,387 millimeters | 1,871 millimeters | 3,576 millimeters | 10 |
| 1950s | 2,468 millimeters | 1,723 millimeters | 3,166 millimeters | 10 |
| 1960s | 2,374 millimeters | 1,769 millimeters | 2,865 millimeters | 10 |
| 1970s | 2,318 millimeters | 1,884 millimeters | 3,201 millimeters | 10 |
| 1980s | 2,207 millimeters | 1,704 millimeters | 2,767 millimeters | 10 |
| 1990s | 2,346 millimeters | 1,765 millimeters | 2,689 millimeters | 10 |
| 2000s | 2,652 millimeters | 2,203 millimeters | 3,362 millimeters | 10 |
| 2010s | 2,656 millimeters | 2,370 millimeters | 2,948 millimeters | 10 |
| 2020s | 2,586 millimeters | 2,050 millimeters | 3,319 millimeters | 6 |
Countries ranked near American Samoa
More reference data data for American Samoa
- Spring temperature anomalies 0.1942 °C (2026)
- Temperature anomalies by month 0.0944 °C (2026)
- Summer temperature anomalies -0.1017 °C (2026)
- Precipitation anomalies 406.76 millimeters (2025)
- Winter temperature anomalies 0.2171 °C (2025)
- Autumn temperature anomalies -0.3295 °C (2025)
- Share of adult men overweight or obese vs. daily supply of calories 89.7% (2024)
- Share of adults who are overweight or obese 91.0% (2024)
- Share of adults who are obese 75.8% (2024)
- Share of men and women expected to survive to the age of 65 82.6% (2024)
Frequently asked questions
- What is annual precipitation in American Samoa?
- Annual precipitation in American Samoa was 2,994 millimeters in 2025, according to Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data.
- What is the highest annual precipitation recorded in American Samoa?
- The highest recorded value was 3,576 millimeters in 1941.
- What is the lowest annual precipitation recorded in American Samoa?
- The lowest recorded value was 1,704 millimeters in 1983.
- How does American Samoa rank for annual precipitation?
- American Samoa ranks 12th out of 192 countries with data for 2025.
- Is annual precipitation rising or falling in American Samoa?
- Over the last ten years it is up 22.0%. The long-run trend across the full record is rising.
- Where does this American Samoa data come from?
- The figures come from Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data, published as part of Annual precipitation. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 86 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Total annual precipitation—rain and snow—calculated as the sum of daily averages, reported as the depth of water falling to Earth's surface, excluding fog and dew.