Countries by Average Annual Rainfall

About This Dataset

Countries ranked by average annual precipitation in millimetres per year according to World Bank Climate Data and FAO AQUASTAT. Colombia and Papua New Guinea receive among the highest average annual rainfall of any large countries — with some regions of Colombia recording over 10,000 mm per year, driven by the unique combination of Pacific moisture, Amazon basin humidity, and the Andes mountain range forcing air masses upward into precipitation at extraordinary rates.

✨ AI Insight

The data highlights a stark contrast in annual rainfall between tropical nations and arid regions. Colombia and Papua New Guinea, with averages exceeding 3,000 mm, benefit from geographical factors such as proximity to oceans and mountainous terrain that enhance precipitation. In contrast, Egypt and Libya exemplify extreme dryness, with averages of just 51 mm and 56 mm, respectively. This disparity underscores the impact of climate and geography on water availability, which is crucial for agriculture and biodiversity. The trend suggests that while tropical regions may face challenges from excessive rainfall, arid countries continue to grapple with water scarcity, emphasizing the need for effective water management strategies.

Source: Wikipedia

Key Findings

Auto-computed highlights from this dataset

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Colombia leads with 3,240 in All Time.

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Average value in All Time: 2,064 · median: 2,789.

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Gap in All Time: Colombia is 63.5× larger than Egypt.