1. Colombia
Average precipitation (2014): 3,240 mm/year
Due to the high rainfall it receives, some parts of Colombia are permanently flooded, which is why Colombia easily tops this list of countries the highest rainfall. The heaviest precipitation occurs on the low-lying areas facing the Pacific, where it rains almost every day. Not coincidentally, rainforests are also abundant in this area. Precipitation lessens as one goes towards the east.
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