American Samoa vs Sierra Leone: Precipitation anomalies
American Samoa
406.76 millimeters
in 2025
Sierra Leone
425.21 millimeters
in 2025
American Samoa rank
8th
Sierra Leone rank
7th
Precipitation anomalies over time
- American Samoa
- Sierra Leone
How they compare
Sierra Leone currently reports 425.21 millimeters against 406.76 millimeters in American Samoa, a difference of 18.45 millimeters.
The two have swapped places 39 times across 86 shared years of data; in 1940 it was American Samoa ahead.
American Samoa ranks 8th and Sierra Leone ranks 7th of 192 countries.
Across the 9 decades both report, American Samoa averaged higher in 2 and Sierra Leone in 7.
Head to head by decade
| Decade | American Samoa | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 1940s | -200.2 millimeters | -130.25 millimeters | 69.95 millimeters | Sierra Leone |
| 1950s | -119.39 millimeters | 265.08 millimeters | 384.47 millimeters | Sierra Leone |
| 1960s | -212.82 millimeters | 134.88 millimeters | 347.7 millimeters | Sierra Leone |
| 1970s | -268.59 millimeters | 152.17 millimeters | 420.76 millimeters | Sierra Leone |
| 1980s | -379.72 millimeters | 97.62 millimeters | 477.35 millimeters | Sierra Leone |
| 1990s | -240.67 millimeters | -49.11 millimeters | 191.56 millimeters | Sierra Leone |
| 2000s | 65.02 millimeters | -5.32 millimeters | 70.34 millimeters | American Samoa |
| 2010s | 69.51 millimeters | 43.24 millimeters | 26.27 millimeters | American Samoa |
| 2020s | -1.01 millimeters | 168.26 millimeters | 169.27 millimeters | Sierra Leone |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher precipitation anomalies, American Samoa or Sierra Leone?
- Sierra Leone, at 425.21 millimeters against 406.76 millimeters in American Samoa as of 2025.
- What is the difference in precipitation anomalies between American Samoa and Sierra Leone?
- 18.45 millimeters, with Sierra Leone ahead.
- How many years of comparable data are there for American Samoa and Sierra Leone?
- 86 years are reported by both, from 1940 to 2025.
- How do American Samoa and Sierra Leone rank globally for precipitation anomalies?
- American Samoa ranks 8th and Sierra Leone ranks 7th of 192 countries.
- Where does this data come from?
- Contains modified Copernicus Climate Change Service information (2026) – with major processing by Our World in Data, published as Precipitation anomalies. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Difference in a specific year's total precipitation—rain and snow—from the 1991–2020 average, measured in millimeters, excluding fog and dew.