Colombia has the world's highest precipitation rate, estimated at 3,240 millimeters per year (127 inches). Due to frequent and intense rainfall, several portions of the state are permanently flooded. It is the heaviest in regions facing the Pacific, where it rains almost every day.
The wettest city in the world is Buenaventura, where it rains 258 days per year. Australia's rainiest city is Cairns in Queensland, with 117 days of precipitation. The UK's wettest city is Londonderry in Northern Ireland (147 days). The wettest city in the US is Hilo, Hawaii (211 days).
The yearly precipitation averaged over the whole Earth is about 100 cm (39 inches), but this is distributed very unevenly. The regions of highest rainfall are found in the equatorial zone and the monsoon area of Southeast Asia.
The wettest state in the U.S. is Hawaii.
An incredible 331 consecutive days of measurable rainfall were recorded at Manuawili Ranch, Maui, in 1939-40.
1. Bergen, Norway. Securing the number one spot as the rainiest city in Europe is Bergen in Norway! Topping the data table for being both the city with the highest average rain days per month (12.7) as well as the highest average daily rainfall (8.8mm), Bergen is the outright rainiest city in Europe.
With an average annual rainfall exceeding 4,000 millimetres (160 in), and the highest-ever annual rainfall in a populated area of Australia (7,900 millimetres (310 in) in 1950), Tully is arguably the wettest town in Australia.
There are three major drivers of rainfall changes: the El Nino Southern Oscillation (ENSO), Indian Ocean Dipole and the Southern Annular Mode. These three patterns have combined over recent years, causing extensive rain across the east of Australia.
Mawsynram receives the highest rainfall in India. It is reportedly the wettest place on Earth, with an average annual rainfall of 11,872 millimetres (467.4 in), According to the Guinness Book of World Records, Mawsynram received 26,000 millimetres (1,000 in) of rainfall in 1985.
How Wet Is Mount Waialeale? With an average of around 450 inches of rain per year, Mount Waialeale is often touted as the wettest place on earth. In 1982, the mountain experienced a mind-boggling 683 inches of rain, the highest ever recorded in the area. Even the name lets you know what to expect.
The Atacama is the driest place on earth, other than the poles. It receives less than 1 mm of precipitation each year, and some areas haven't seen a drop of rain in more than 500 years. Forget “photo-worthy” or “memorable.” The landscapes here inspired Salvador Dalí paintings.
Sydney and Melbourne both have an average of approximately 100 days of rain per year, but the average rainfall in Sydney per year is double the volume in Melbourne! So, when it rains in Sydney, it tends to be torrential!
The driest place on Earth is in Antarctica in an area called the Dry Valleys, which have seen no rain for nearly 2 million years. There is absolutely no precipitation in this region and it makes up a 4800 square kilometer region of almost no water, ice or snow.
Australia is a stunning country to see in the rain. Though many of the tourists are visiting during the summer months, but it's a year-round destination.
The city of Perth has the best weather/climate in Australia. The city enjoys a temperate Mediterranean climate with hot and dry summers and mild but wet winters. Perth is also the sunniest capital city in Australia and is considered one of the hottest experiencing over 250+ days of sunny blue skies.
Australian Rainfall per State in 2021
The Tasmanian city of Queenstown is one of the wettest places in the whole of Australia, experiencing about 150 days of rain per year.
South Australia is the driest of the Australian states. Only about one-fifth of the area receives annual precipitation of more than 10 inches (250 mm), and less than half of that has more than 16 inches (400 mm).
Tasmania has been ranked one of the top five places in the world to survive a global collapse in society, according to a British study.
Seven hundred kilometres south of Alice Springs, Oodnadatta sits in the hot, dry heart of the Australian outback. Here, temperatures regularly rise past the mid thirties and rain is rarely seen.
South America is the wettest and has the largest river flow and evaporation (Table 1). Australia, with the lowest rainfall, discharges the least in consequence. Antarctica is an exception: it is very dry, and very little snow sublimates.
Cardiff is Britain's wettest city with 1,152m m falling on it each year. Manchester comes in at 15 behind Belfast and Leeds. London is one of the driest at number 63 with a mere 557mm of rain.
Greenwich Observatory, London gets 562mm per year on average. That's less than Malta (592mm) and Rome (586mm) and very similar to Barcelona (520mm). London's rain is about half of the annual average of Sydney (1,222mm) or Orlando or New York (1,175mm and 1,059mm respectively).