The wettest place on Earth doesn’t even crack the list of the world’s rainiest countries. 

Mawsynram, India, holds the Guinness World Record for average annual rainfall at nearly 11,900 millimeters, more than triple the amount that tops the country-level ranking. 

India’s own national average gets diluted by the rest of its much drier territory.

The visualization above shows the Rainiest countries in the world, based on data from WorldAtlas. 

TL;DR

• Colombia ranks as the world’s rainiest country, averaging 3,240mm of rain a year.
• The single wettest place on Earth is in India, yet India doesn’t appear anywhere on this list.
• Panama and Costa Rica are nearly tied, just 2 millimeters apart.

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Rainiest Countries In The World 

Note: WorldAtlas aggregates the record via World Bank figures largely dating to 2021. 

Colombia tops the list at 3,240 millimeters a year, followed by São Tomé and Príncipe (3,200mm) and Papua New Guinea (3,142mm). 

Rounding out the top ten are the Solomon Islands, Panama, Costa Rica, Samoa, Malaysia, Brunei, and Indonesia, each still averaging well over 2,700 millimeters annually. 

Rain Clusters Into Just a Few Regions

Look closely at the list, and it isn’t scattered randomly across the globe. 

Eight of the ten countries fall into just three tight regional clusters. Indonesia, Brunei, and Malaysia all sit in maritime Southeast Asia, practically neighbors sharing the Borneo and Malay Peninsula region. 

Samoa, the Solomon Islands, and Papua New Guinea all sit in the South Pacific. 

Costa Rica and Panama, direct neighbors in Central America, are so close together that their numbers are nearly identical (2,926 millimeters versus 2,928 millimeters, a two-millimeter gap). 

Malaysia and Samoa run almost as close, five millimeters apart, despite sitting on opposite sides of the planet.

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A Narrow Range at the Top

The entire top ten spans a surprisingly tight range.

 The difference between tenth-place Indonesia (2,702mm) and first-place Colombia (3,240mm) is 538 millimeters, about 20%.  

Only one African country appears. São Tomé and Príncipe, a small island nation whose rainy season lasts roughly nine months of the year, is a matter of duration as much as intensity. 

Notably absent are Africa’s Congo Basin rainforest countries, despite their strong association with heavy rain in popular imagination.

Colombia’s position at the very top says as much about how national averages work as it does about the country’s weather. 

Colombia holds both dry savannah and some of the wettest rainforest in South America, and its 3,240-millimeter figure is the average of both. 

ELI5

Colombia is officially the world’s rainiest country, but the actual rainiest spot on Earth is a village in India, and India doesn’t even make the top ten. 

That’s because this list ranks countries, not individual places, and India’s record-breaking rainfall is offset by the rest of its much drier land.

Source:

WorldAtlas record