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Mapped: The World’s Wettest and Driest Countries

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See this visualization first on the Voronoi app.

A map of the wettest and driest countries in the world along with their average annual precipitation in millimeters.

Where are the World’s Wettest and Driest Countries?

This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources.

From tropical rainforest nations to the sandy deserts of North Africa and the Middle East, the world’s wettest and driest countries are a study in contrasts.

We map and rank the countries that receive the highest and lowest average annual precipitation in millimeters, per latest data from the World Bank.

Ranked: Top 10 Wettest Countries

Colombia tops the list of nations with the highest average precipitation at 3,240 millimeters (128 inches) in a year.

Its Tutunendo district is the one of the world’s wettest places, averaging nearly 12,000 mm (463 inches) of rain annually.

RankCountryAverage Annual
Precipitation (mm)
1🇨🇴 Colombia3,240
2🇸🇹 Sao Tome & Principe3,200
3🇵🇬 Papua New Guinea3,142
4🇸🇧 Solomon Islands3,028
5🇵🇦 Panama2,928
6🇨🇷 Costa Rica2,926
7🇼🇸 Samoa2,880
8🇲🇾 Malaysia2,875
9🇧🇳 Brunei2,722
10🇮🇩 Indonesia2,702

Note: Figures are rounded.

Off the coast of Africa however, Sao Tome & Principe is not far behind Colombia, receiving about 3,200 mm of rain in 2020.

Papua New Guinea and the Solomon Islands also average more than 3,000 mm of rain in a year, and Panama (2,928 mm) rounds out the top five.

Noticeably, all 10 countries lie in close proximity to the equator, and near oceans, where rising hot and humid air leads to abundant rainfall.

Ranked: Top 10 Driest Countries

On the other end of the scale, Egypt records the lowest average annual rainfall across all countries, at 18 mm (0.7 inches). For comparison, Colombia receives nearly 180x the amount of rain Egypt does.

RankCountryAverage Annual
Precipitation (mm)
1🇪🇬 Egypt18
2🇱🇾 Libya56
3🇸🇦 Saudi Arabia59
4🇶🇦 Qatar74
5🇦🇪 UAE78
6🇧🇭 Bahrain83
7🇩🇿 Algeria89
8🇲🇷 Mauritania92
9🇯🇴 Jordan111
10🇰🇼 Kuwait121

Note: Figures are rounded.

In fact, countries from North Africa and the Middle East make up the entirety of this list of the driest countries in the world.

Learn More About Rainfall From Visual Capitalist

If you enjoyed this post, be sure to check out Mapping the Unequal Distribution of Global Precipitation which divides the world into two halves: one that receives more than global average of rain (or snow), and one that receives less.

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Maps

Mapped: 15 Countries with the Highest Smoking Rates

Since the 1950s, many countries have tried to discourage tobacco use and bring down smoking rates. Here’s where they haven’t worked.

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A cropped map with the 15 countries with the highest smoking rates in the world.

Mapped: 15 Countries with the Highest Smoking Rates

This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources.

It was not until 1950 when the link between smoking and lung cancer was proven, though physicians as far back as the late 19th century had identified it as a potential cause.

Since then, many countries have discouraged tobacco products in an attempt to reduce smoking rates, and consequent health effects.

We visualize the countries with the highest rates of tobacco use among their population aged 15 and older. Data is sourced from the World Health Organization, and is current up to 2022.

Which Countries Smoke the Most?

In Nauru, nearly half of the population aged 15+ uses a tobacco product, the highest in the world. The island also has a high obesity rate, and nearly one-third of the population suffers from diabetes, due to poor nutritional variety in the food supply.

Here’s a list of smoking rates by country, ranked from highest to lowest.

RankCountryTobacco use in
those aged 15+
1🇳🇷 Nauru48%
2🇲🇲 Myanmar44%
3🇰🇮 Kiribati40%
4🇵🇬 Papua New Guinea40%
5🇧🇬 Bulgaria40%
6🇷🇸 Serbia40%
7🇹🇱 Timor-Leste39%
8🇮🇩 Indonesia38%
9🇭🇷 Croatia37%
10🇸🇧 Solomon Islands37%
11🇦🇩 Andorra36%
12🇧🇦 Bosnia &
Herzegovina
36%
13🇨🇾 Cyprus36%
14🇯🇴 Jordan36%
15🇫🇷 France35%
N/A🌍 World23%

Note: Figures rounded. “Tobacco use” includes smoke and smokeless products.

Meanwhile, countries in the Balkan also see a high incidence of tobacco use, bucking the general European trend. Entrenched cultural norms, lax laws, and inexpensive cigarettes are some of the most commonly identified causes.

On the other hand, tobacco use is a lot lower in the Americas and sub-Saharan Africa.

In the U.S., fewer than one in four adults smoke. Canada is even lower at 12% of the population. But some African countries (Nigeria and Ghana) are all the way down in the single-digits, at 3%.

Interestingly, men smoke more than women in nearly every country in the world.

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