Port Moresby - The Capital of Papua New Guinea

Population
383,000
Language
English
Continent
Oceania
Since
1975
Eco Ranking
144/195

Source: Environmental Performance Index 2024.

About Port Moresby

Port Moresby became the capital of Papua New Guinea upon independence from Australia in September 1975. The city had served as the British colonial administrative center since the late 19th century, Britain declared a protectorate over the southeastern part of the island of New Guinea in 1884, partly to preempt German expansion. Australia administered the territory as a League of Nations mandate and later a UN Trust Territory following World War II. During World War II, Port Moresby was a critical Allied base and the target of a failed Japanese offensive, the Kokoda Track campaign is commemorated as a defining episode in Australian military history. Papua New Guinea is notable for its extraordinary linguistic diversity: the country has over 800 distinct languages, more than any other nation in the world, representing a vast diversity of largely pre-literate oral traditions and cultures. Port Moresby is a primate city, concentrating government, banking, and formal economic activity in a country where most of the population lives in rural subsistence conditions. Despite significant natural resource wealth, including gold, copper, LNG, and timber, governance challenges, corruption, and poor infrastructure have limited broad economic development. The city has persistently high rates of urban crime and poverty, shaped in part by rapid and poorly managed internal migration.

About Papua New Guinea

Papua New Guinea is a constitutional monarchy and parliamentary democracy within the Commonwealth, with the British monarch as head of state represented by a Governor-General. The unicameral National Parliament operates under a limited preferential voting system. The country occupies the eastern half of the island of New Guinea and numerous offshore islands, sharing a land border with Indonesia.

View Port Moresby on the map

View Port Moresby - The Capital of Papua New Guinea on the map

Flight time from Port Moresby to other capitals

CityDistance (km)Flight Time
Canberra29003h 25m
Singapore49005h 46m
Tokyo51006h 0m
Abu Dhabi1070012h 35m
Cape Town1280015h 4m
Rome1430016h 49m
Buenos Aires1440016h 56m
London1450017h 4m
Paris1450017h 4m
Washington, D.C.1450017h 4m

Capitals with similar population to Port Moresby

CityPopulation
Windhoek431,000
Tirana418,495
Dodoma410,956
Sarajevo395,133
Port Moresby383,000
Yamoussoukro355,573
San José342,188

Capitals with similar eco ranking to Port Moresby

CityEco Rank
Banjul143
Accra144
Maseru144
Nairobi144
Port Moresby144
Conakry145
Port-au-Prince146

Source: Environmental Performance Index 2024.

Frequently Asked Questions

  • When did Papua New Guinea gain independence?

    Papua New Guinea gained independence from Australia on September 16, 1975. The country had been under Australian administration, first as a League of Nations mandate and later under a UN Trusteeship, since Australia took control of German New Guinea during World War I.

  • Why does Papua New Guinea have so many languages?

    Papua New Guinea's rugged terrain of mountains, rainforests, and islands created conditions of extreme geographic isolation for thousands of years, allowing hundreds of distinct language groups to develop independently. With over 800 languages, PNG accounts for roughly 10% of the world's languages in a country of fewer than 10 million people.

  • What was the significance of Port Moresby in World War II?

    Port Moresby was a key Allied base in the Pacific Theater and a primary strategic objective of Japanese forces in 1942. Japan's overland advance via the Kokoda Track was halted by Australian forces in one of the war's most grueling jungle campaigns. Preventing the fall of Port Moresby was considered critical to protecting Australia from invasion.

  • Is Papua New Guinea rich in natural resources?

    Yes. Papua New Guinea has substantial deposits of gold, copper, silver, oil, and natural gas, as well as significant timber resources. The PNG LNG project, operated partly by ExxonMobil, is one of the largest LNG developments in the Asia-Pacific. However, resource wealth has not substantially reduced poverty due to governance and infrastructure challenges.

  • Is Port Moresby the largest city in Papua New Guinea?

    Yes, Port Moresby is the largest city in Papua New Guinea, though estimates of its population vary. The city has grown rapidly through rural-to-urban migration and is significantly larger than the country's second city, Lae. It concentrates a disproportionate share of formal economic activity and government functions.

Sights and landmarks

Port Moresby has sights that reflect the complexity of the country. The National Museum and Art Gallery houses exceptional collections of tribal art, masks and ceremonial objects from the hundreds of cultural groups of Papua New Guinea. The Parliament House from 1984 is designed in the style of a traditional haus tambaran (spirit house) from the Sepik region. Adventure Park and Variarata National Park offer tropical nature and walking trails. The Bomana War Cemetery commemorates Allied soldiers from World War II. A visit to the famous Kokoda Track, a nine-day trek, starts nearby.

Climate and best time to visit

Port Moresby lies in an unusually dry area for Papua New Guinea, thanks to a rain shadow from the mountains. The wet season runs from December to May, with temperatures around 28 to 32 degrees and high humidity. The dry season from June to November is hot but less humid, with south-easterly trade winds. The best travel period is July to October. Unlike the rainy interiors, Port Moresby itself receives only around 1,000 millimetres of rain annually, significantly less than the highlands.

Culture and customs

Papua New Guinea possesses one of the world's most diverse human societies, with more than 800 languages. Port Moresby attracts migrants from all provinces, making the city a patchwork of clans and wantoks (language relatives). The official languages are English, Tok Pisin and Hiri Motu. Wantokism, the system of mutual obligations, remains a fundamental social principle. Christian churches, predominantly Catholic and Lutheran, are deeply rooted, often blended with traditional beliefs. Betel nut chewing is widespread and recognisable from the red saliva on the streets.

Economy

Port Moresby is the commercial and administrative centre of a resource-rich economy. Papua New Guinea is among the world's largest exporters of liquefied natural gas (LNG); the ExxonMobil-led PNG LNG project is one of the largest investments in Oceania ever. Gold, copper (Ok Tedi, Porgera), palm oil, coffee and cocoa are further export pillars. The port of Port Moresby is a vital supply line. The financial sector, telecom and construction are concentrated in the city. Unemployment and urban poverty remain significant despite economic growth.
Port Moresby, capital of Papua New Guinea
Port Moresby, capital of Papua New Guinea

Capitals quiz

Test how many of the 195 national capitals you can name, by continent or worldwide.

Start quiz
What is the capital of New Zealand?