Japan

Published 2026-10-02 · Reference profile · 7 sections
Country facts
Continent
Asia
Capital
Tokyo
Area
377,975 km²
Population
~125 million
Climate
Temperate, four distinct seasons
Neighbours / water
Pacific Ocean, Sea of Japan, East China Sea, Sea of Okhotsk

Where this country is

Japan is an island country in East Asia, situated in the western Pacific Ocean. It lies off the eastern coast of the Asian mainland, separated from the Korean Peninsula and Russia by the Sea of Japan, and from China and Taiwan by the East China Sea. The archipelago stretches from the Sea of Okhotsk in the north to the East China Sea and Philippine Sea in the south, covering a distance of over 3,000 kilometers from northeast to southwest. Japan consists of four main islands—Honshu, Hokkaido, Kyushu, and Shikoku—along with thousands of smaller islands. The capital, Tokyo, is located on the eastern coast of Honshu, facing Tokyo Bay. Japan's strategic location at the crossroads of the Pacific has made it a maritime nation with a long history of cultural exchange and trade. The country's nearest neighbors are South Korea to the west, North Korea and Russia to the northwest, and China and Taiwan to the southwest, though all are separated by sea. The Pacific Ocean lies to the east and south, providing rich fishing grounds and a moderating influence on the climate.

Physical geography and landforms

Japan's terrain is predominantly mountainous, with about 73% of the land covered by mountains and hills. The Japanese Alps, a series of rugged mountain ranges on Honshu, include several peaks over 3,000 meters, such as Mount Kita and Mount Hotaka. Mount Fuji, the country's highest peak at 3,776 meters, is an iconic stratovolcano and a UNESCO World Heritage site. The archipelago sits on the Pacific Ring of Fire, making it highly seismically active with numerous volcanoes and frequent earthquakes. The Kanto Plain, the largest flat area, surrounds Tokyo and is densely populated. Other significant plains include the Nobi Plain around Nagoya and the Osaka Plain. Hokkaido, the northernmost major island, features cooler climates and distinct mountain ranges like the Daisetsuzan Volcanic Group. Kyushu and Shikoku are characterized by volcanic mountains and narrow coastal plains. The coastline is highly indented, creating numerous bays, inlets, and natural harbors. Japan's land area is approximately 377,975 square kilometers, slightly larger than Germany. The country's geography has shaped its culture, settlement patterns, and reliance on maritime resources.

Climate and seasons

Japan has a temperate climate with four distinct seasons, though it varies significantly from north to south. Hokkaido experiences a humid continental climate with cold, snowy winters and mild summers. Honshu, Shikoku, and Kyushu have a humid subtropical climate, with hot, humid summers and relatively mild winters, except in mountainous areas. The Pacific coast receives heavy rainfall in summer, while the Sea of Japan coast gets heavy snowfall in winter due to cold winds from Siberia picking up moisture over the sea. Japan has a rainy season (tsuyu) in June and early July, and a typhoon season from August to October, bringing strong winds and heavy rain. Spring is famous for cherry blossoms (sakura) that bloom from late March to early May, progressing northward. Autumn features colorful foliage and pleasant temperatures. Annual precipitation ranges from about 1,000 to 2,500 millimeters, with higher amounts in mountainous regions. The climate is influenced by the Asian monsoon and ocean currents, such as the warm Kuroshio Current and the cold Oyashio Current, which meet off the coast of Hokkaido, creating rich fishing grounds. Climate change is impacting Japan with more extreme weather events and rising sea levels.

Rivers, lakes, and coastlines

Japan's rivers are generally short and steep due to the mountainous terrain. The longest river is the Shinano River, which flows 367 kilometers through Nagano and Niigata Prefectures into the Sea of Japan. Other major rivers include the Tone, Ishikari, and Kitakami. These rivers are vital for irrigation, hydroelectric power, and industry, but they also pose flood risks. Lake Biwa in Shiga Prefecture is the largest freshwater lake, covering about 670 square kilometers, and is an important water source for the Kansai region. Other notable lakes include Lake Kasumigaura, Lake Saroma, and Lake Inawashiro. Japan's coastline extends over 29,000 kilometers, featuring diverse landscapes: rocky cliffs, sandy beaches, coral reefs in the south, and fjord-like bays in the north. The Seto Inland Sea, surrounded by Honshu, Shikoku, and Kyushu, is known for its calm waters and numerous islands. The Pacific coast is often hit by typhoons and tsunamis, leading to extensive coastal defenses. Japan's territorial waters and exclusive economic zone are among the largest in the world, rich in marine resources. Coastal areas are heavily developed with ports, cities, and industrial zones, while some remote coastlines remain protected as national parks.

Population and settlement

Japan has a population of approximately 125 million, making it the eleventh most populous country in the world. However, its population is declining due to low birth rates and an aging society. The population is highly urbanized, with over 90% living in cities, primarily along the Pacific coast. The Greater Tokyo Area, which includes Tokyo, Yokohama, and surrounding prefectures, is the world's most populous metropolitan area, with over 37 million residents. Other major metropolitan areas include Osaka-Kobe-Kyoto (Keihanshin) and Nagoya. Settlement patterns are influenced by topography: flat plains, especially the Kanto Plain, are densely populated, while mountainous regions are sparsely inhabited. Rural areas face depopulation as young people migrate to cities. Japan's population is ethnically homogeneous, with small minority groups such as Ainu, Ryukyuan, and Koreans. The official language is Japanese, and the dominant religions are Shinto and Buddhism. The country has a high life expectancy and a low fertility rate, leading to a shrinking workforce and increased healthcare costs. The government has implemented policies to encourage childbirth and immigration, but with limited success. Urban planning emphasizes efficient public transportation, particularly trains and subways, to manage congestion.

Regions and major cities

Japan is divided into eight traditional regions: Hokkaido, Tohoku, Kanto, Chubu, Kansai (Kinki), Chugoku, Shikoku, and Kyushu-Okinawa. Hokkaido, the northernmost region, is known for its natural landscapes, skiing, and seafood. Tohoku, in northeastern Honshu, is mountainous and agricultural. Kanto, on the eastern coast, includes Tokyo and is the political and economic heart of the country. Chubu, in central Honshu, features the Japanese Alps and cities like Nagoya and Kanazawa. Kansai, in western Honshu, includes Osaka, Kyoto, and Kobe, and is a cultural and historical center. Chugoku, the westernmost part of Honshu, is less populated and known for its scenic coastlines. Shikoku, the smallest main island, is rural and known for its pilgrimage routes. Kyushu, the southernmost main island, is volcanic and has active cities like Fukuoka and Kumamoto. Okinawa, a chain of islands in the southwest, has a subtropical climate and distinct culture. Major cities include Tokyo (capital), Yokohama, Osaka, Nagoya, Sapporo, Fukuoka, Kobe, Kyoto, Kawasaki, and Hiroshima. Each city has its own character and economic base, from Tokyo's global finance to Kyoto's tourism and traditional crafts.

Frequently asked questions

What is the capital of Japan? The capital of Japan is Tokyo, which is located on the eastern coast of Honshu. It is the political, economic, and cultural center of the country, and the seat of the Emperor and the National Diet. What is the highest mountain in Japan? Mount Fuji, an active volcano, is the highest peak at 3,776 meters. It is a symbol of Japan and a popular destination for climbers and tourists. What are the main islands of Japan? Japan consists of four main islands: Honshu, Hokkaido, Kyushu, and Shikoku. Honshu is the largest and most populous, home to Tokyo, Osaka, and other major cities. What is the climate like in Japan? Japan has a temperate climate with four distinct seasons, but it varies from humid continental in Hokkaido to humid subtropical in the south. Summers are hot and humid, winters are cold with heavy snow in some areas, and there is a rainy season in June-July and typhoon season in late summer. What is the population of Japan? The population is approximately 125 million, but it is declining due to low birth rates and an aging society. Most people live in urban areas along the coast.