Rainiest Countries
Rainiest Countries: the dated top ten, the source and what this long-run mean precipitation, millimetres per year comparison tells us.
In this 2022 source snapshot, Colombia has the highest reported value among eligible entries: 3,240.00. Sao Tome and Principe follows at 3,200.00. The unit is long-run mean precipitation, millimetres per year.
About the data
Snapshot retrieved 14 October 2026. 180 eligible observations. Among supported countries and separately reported territories with data. Missing observations are excluded, not treated as zero. Rankings use unrounded values; displayed values are rounded to two decimals. The 2022 label is a database reporting year for long-run climate averages, not rainfall measured in 2022.
| Country | Value |
|---|---|
| Colombia | 3,240 |
| Sao Tome and Principe | 3,200 |
| Papua New Guinea | 3,142 |
| Solomon Islands | 3,028 |
| Panama | 2,928 |
| Costa Rica | 2,926 |
| Samoa | 2,880 |
| Malaysia | 2,875 |
| Brunei Darussalam | 2,722 |
| Indonesia | 2,702 |
What the numbers mean
These are long-run average precipitation figures, not observations of rainfall during the year shown in the database. A national average combines very wet and relatively dry regions. It does not rank the wettest cities or the rainiest individual days. Use the World Bank metadata for the underlying climate-average definition rather than treating the release year as a weather record.
Where the top ten ends
The tenth entry is Indonesia at 2,702.00. This is a cutoff within the published comparison, not evidence that countries outside the table have no activity. The date and coverage are part of the answer: updating the source or changing the eligible territories can change who appears.
Source and method
Snapshot retrieved 14 October 2026. 180 eligible observations. Among supported countries and separately reported territories with data. Missing observations are excluded, not treated as zero. Rankings use unrounded values; displayed values are rounded to two decimals. The 2022 label is a database reporting year for long-run climate averages, not rainfall measured in 2022.
Source: World Bank