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Reykjavík

Reykjavík is the capital city of Iceland. It is by the sea, far in the north. Hot water from under the ground keeps its homes warm!

Reykjavík is the capital of Iceland and its most populous town. People settled here in Viking times, around 870, and it became a town in 1786. Statistics Iceland counted 139,804 people in Reykjavík at the start of 2026, and hot water piped from deep underground heats its homes and swimming pools.

Reykjavík, capital of Iceland and its most populous municipality (139,804 on 1 January 2026), stands on a bay in the southwest of the island. Settled around 870, it received town rights in 1786. Since a first well was drilled in 1928, geothermal hot water has heated the city's buildings and pools.

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Photo: Hedwig Storch, CC BY-SA 3.0, via Wikimedia Commons

Discover Reykjavík

Reykjavík is the capital city of Iceland.

Iceland is an island in the north Atlantic Ocean. Reykjavík sits by the sea. Many of its houses have brightly painted roofs.

Reykjavík is the capital of Iceland, an island country in the North Atlantic. It is the country's economic, cultural and political center, and by far its biggest town.

Statistics Iceland's estimate gives 139,804 people in Reykjavík on 1 January 2026, out of 394,324 in the whole country. That means more than a third of everyone in Iceland lives in this one municipality.

Reykjavík is the capital of Iceland and its most populous municipality, which Visit Reykjavík calls the nation's economic, cultural and political center.

Statistics Iceland's estimate for 1 January 2026 gives 139,804 inhabitants, the largest of the country's 62 municipalities and about 35 percent of Iceland's 394,324 people. Reykjavík grew by 0.7 percent in 2025, below the national average of 1.3 percent.

Country
Iceland (capital)
People in Reykjavík municipality (1 January 2026)
139,804
People in all of Iceland (1 January 2026)
394,324
Town rights
1786
Photo of Reykjavík
Photo: Hedwig Storch, CC BY-SA 3.0, via Wikimedia Commons

A Viking house, a tall church and a glass concert hall

Under one street in Reykjavík are the remains of a Viking house, more than a thousand years old.

The city also has a tall church. You can go up its tower to look over the city.

Below Aðalstræti, a street in the city center, you can see the excavated remains of a Viking longhouse from the 900s. The museum there tells how Reykjavík grew from a farm into a city.

Hallgrímskirkja, a church whose design was inspired by Iceland's dramatic landscapes, is named after Hallgrímur Pétursson, a poet and pastor of the 1600s. Visitors can go up its tower for views over the city. By the harbor stands Harpa, a concert hall that opened in 2011.

The Reykjavík City Museum's exhibition at Aðalstræti 10 and 16 runs underground from the remains of a 10th-century Viking longhouse to Aðalstræti 10, the oldest remaining building in the Kvosin area, tracing the city's development from a farm to a city.

Hallgrímskirkja, an Evangelical Lutheran church named after the 17th-century poet and pastor Hallgrímur Pétursson, is described by Visit Reykjavík as one of the finest examples of modern Icelandic design, its architecture inspired by Iceland's natural landscapes; its tower is open to visitors. Harpa, a concert hall and cultural center, opened in 2011.

Settlement Exhibition, Aðalstræti 16
remains of a 10th-century Viking longhouse
Hallgrímskirkja
named after the 17th-century poet Hallgrímur Pétursson
Harpa concert hall
opened 2011
Photo of Reykjavík
Photo: Hedwig Storch, CC BY-SA 3.0, via Wikimedia Commons

From a Viking farm to a capital

More than a thousand years ago, people sailed to Iceland and built a farm here.

For a long time there were only farms. Slowly a town grew, and it became the capital.

People settled at Reykjavík around 870: archaeologists have found remains from about that time under streets in the city center. For hundreds of years, there were only farms here.

In the 1700s a wool workshop brought new houses, and in 1786 Reykjavík was granted town rights. Iceland's parliament, the Alþingi, met here again from 1845, and the University of Iceland opened in 1911. A new harbor, built between 1913 and 1917, made it easier for ships to trade.

Visit Reykjavík records Ingólfur Arnarson, widely considered Iceland's first settler, arriving in 870; finds from around that time in Aðalstræti, Suðurgata, Kirkjustræti and Lækjargata support settlement then. Farms were scattered over the area until the 18th century, when a wool enterprise, Innréttingarnar, built sixteen houses and gave Reykjavík the look of a village.

A royal decree of 1786, after the trade monopoly ended, gave six trading places town rights; from 1836 Reykjavík was the only official town. The Alþingi was re-established here in 1845 and its Parliament House opened in 1881; the city's first mayor took office in 1908, the year the first women in Iceland were elected to the city council. The University of Iceland was founded on 17 June 1911, and the harbor was built in stages from 1913 to 1917.

First settlement
around 870
Parliament (Alþingi) re-established in Reykjavík
1845
University of Iceland founded
17 June 1911
Photo of Reykjavík
Photo: Hedwig Storch, CC BY-SA 3.0, via Wikimedia Commons

Through the years

Hot water under the city

Deep under Reykjavík, the ground is very hot. It heats water down there.

Pipes bring the hot water up to warm houses, schools and swimming pools.

Reykjavík is heated by hot water from underground, called geothermal water. In 1928 the city drilled its first heating well at Þvottalaugarnar, where people had long washed their clothes in warm springs. The water came up at 87 °C and was piped about three kilometers to a swimming pool, a school, a hospital and about sixty houses.

The city's first indoor swimming pool, Sundhöllin, opened in 1937. The Laugardalur area now has nine hot-water wells, and in 2026 the city's utility, Veitur, began drilling more to keep up with a growing city.

Reykjavík's first district heating well was drilled in 1928 at Þvottalaugarnar, a place long used for washing clothes; it yielded 14 liters a second at 87 °C, piped about 3 km to Sundhöllin, Austurbæjarskóli school, Landspítali hospital and around sixty houses. Sundhöll Reykjavíkur, the city's first indoor pool, opened in March 1937.

The City of Reykjavík says geothermal heat beneath Laugardalur has kept residents warm for nearly a century; nine wells operate there, and in 2026 Veitur Utilities began drilling a new well at Kringlumýrarbraut and Suðurlandsbraut to secure enough hot water for a growing city.

First district heating well
1928, at Þvottalaugarnar (the old washing pools)
Water from that well
87 °C, 14 liters a second
Geothermal wells in Laugardalur
nine operating, with more drilling in 2026
Photo of Reykjavík
Photo: Hedwig Storch, CC BY-SA 3.0, via Wikimedia Commons

Cool summers, mild winters

Reykjavík is never very hot.

In summer it is cool. In winter it is cold, around freezing.

Reykjavík is far north, at about 64 degrees north, yet its winters stay close to freezing. The World Meteorological Organization's averages for 1961–1990 give January days of about 2 °C and nights of about −3 °C.

Summers are cool: in July, the warmest month, days average only about 13 °C. Rain or snow falls on about 10 to 15 days in every month, adding up to about 800 millimeters a year. October is the wettest month.

WMO normals for Reykjavík (Icelandic Meteorological Office, 1961–1990) give average highs and lows of 1.9 °C and −3.0 °C in January and 13.3 °C and 8.3 °C in July; monthly mean temperatures stay between −0.5 °C (January) and 10.6 °C (July).

Precipitation totals about 798 mm a year, from 43.8 mm in May to 85.6 mm in October, with 10 to 15 days of precipitation every month.

January, average daily high and low (WMO Reykjavík station, 1961–1990)
about 2 °C and −3 °C
July, average daily high and low (same station and period)
about 13 °C and 8 °C
Rain and snow in a year (sum of the monthly averages)
about 800 mm

Pools, music and the sea

Reykjavík has swimming pools warmed with water from under the ground.

Fishing has long been important here. There is a museum all about fishing boats and fishers.

Thanks to its hot water, Reykjavík has heated swimming pools; the first indoor one, Sundhöllin, opened in 1937. Fishing has long been important to the city: the Reykjavík Maritime Museum tells how rowing boats gave way to big fishing ships in the late 1800s.

Reykjavík has a history of firsts for Iceland too. In 1908 the first women in Iceland were elected to Reykjavík's city council, and the University of Iceland opened here in 1911.

Geothermal water made heated public pools part of city life: Sundhöll Reykjavíkur, the first indoor pool, opened in March 1937 on the early district heating network. The Reykjavík Maritime Museum's exhibition "Fish & folk" traces Icelandic fisheries from the late 19th century, when rowing boats gave way to large fishing vessels, into the 21st century; the Naval Academy opened in 1891 after decked ships arrived.

In the municipal elections of January 1908, candidates on a women's list became the first women elected to a council in Iceland, the same year Reykjavík's first mayor took office.

Sundhöll Reykjavíkur
first indoor swimming pool, opened March 1937
Reykjavík Maritime Museum exhibition
150 years of Icelandic fisheries
First women elected to the city council
January 1908
Photo of Reykjavík
Photo: Hedwig Storch, CC BY-SA 3.0, via Wikimedia Commons

Reykjavík on the map

Find Reykjavík on the globe.

Look for Iceland, an island in the north Atlantic, between Europe and Greenland. Reykjavík is on its west side, by the sea.

Reykjavík is on the southwest coast of Iceland, at about 64 degrees north. The city spreads along a bay, with the island of Viðey just offshore, where monks founded a monastery in 1226.

From the city you can look across the water to mountains on the far shore.

Reykjavík lies at about 64.1° N and 21.9° W, on the southwest coast of Iceland. Around the first settlement, farms grew up at Laugarnes and at Nes by Seltjörn, and Augustinian monks founded a monastery on Viðey island in 1226.

The Laugardalur valley in the east of the city holds the geothermal field that has supplied district heating for nearly a century.

Latitude
about 64.1° north
Longitude
about 21.9° west
Island in the bay
Viðey, where a monastery was founded in 1226

Amazing facts

  • Reykjavík's first hot-water well gave water hotter than a cup of tea.

    Reykjavík's first heating well, drilled in 1928, brought up water at 87 °C and warmed a pool, a school, a hospital and about sixty houses.

    The 1928 well at Þvottalaugarnar yielded 14 liters a second at 87 °C, piped about 3 km to Sundhöllin, Austurbæjarskóli, Landspítali and around sixty houses.

  • You can see a Viking house under a street in Reykjavík.

    Under Aðalstræti in central Reykjavík lie the remains of a Viking longhouse from the 900s, now part of a museum.

    Aðalstræti 16 houses the excavated remains of a 10th-century Viking longhouse, linked underground to Aðalstræti 10, the oldest remaining building in Kvosin.

  • More than one out of three people in Iceland live in Reykjavík.

    Of Iceland's 394,324 people at the start of 2026, 139,804 lived in Reykjavík, more than a third.

    Reykjavík, with 139,804 inhabitants on 1 January 2026, was the most populous of Iceland's 62 municipalities; the smallest had 54.

  • Long ago, women in Reykjavík were elected to help run the city.

    In 1908, Reykjavík elected the first women to serve on a council in Iceland.

    In January 1908, candidates on a women's list in Reykjavík became the first women elected to a municipal council in Iceland.

Words to know

capital
the city where a country's government meets
geothermal
heat that comes from deep inside the Earth
district heating
a system of pipes that carries hot water from one source to heat many buildings
longhouse
a long, narrow house where Viking-age families lived
municipality
a town or city area with its own local government
settlement
a place where people come to live for the first time

Discovery challenge

  1. Reykjavík is the capital of which country?

    Reykjavík is the capital city of which country?

    Reykjavík is the most populous municipality and capital of which country?

    • Norway
    • Iceland
    • Ireland
    Show the answer

    Iceland

    Iceland! It is an island in the north Atlantic.

    Iceland, an island country in the North Atlantic.

    Iceland; Reykjavík had 139,804 of its 394,324 people on 1 January 2026.

  2. What warms the houses in Reykjavík?

    What heats most buildings and pools in Reykjavík?

    What has supplied Reykjavík's district heating since 1928?

    • Hot water from underground
    • Big wood fires
    • Sunlight in winter
    Show the answer

    Hot water from underground

    Hot water from under the ground!

    Geothermal hot water from wells, piped to buildings.

    Geothermal water from wells, first at Þvottalaugarnar in 1928 and now nine wells in Laugardalur.

  3. What old house is under a Reykjavík street?

    What was found under Aðalstræti in central Reykjavík?

    What do the remains at Aðalstræti 16 date from?

    • A Viking longhouse
    • A Roman temple
    • A castle
    Show the answer

    A Viking longhouse

    A Viking longhouse, more than a thousand years old!

    The remains of a Viking longhouse from the 900s.

    A 10th-century Viking longhouse.

  4. When did Reykjavík become a town?

    In which year was Reykjavík granted town rights?

    In which year did a royal decree give Reykjavík and five other trading places town rights?

    • 870
    • 1786
    • 1911
    Show the answer

    1786

    In 1786!

    In 1786, after the trade monopoly ended.

    1786; from 1836 Reykjavík was Iceland's only official town.

  5. What is the weather like in Reykjavík in July?

    How warm is a July day in Reykjavík on average?

    What is Reykjavík's average July high (WMO, 1961–1990)?

    • About 13 °C, cool
    • About 35 °C, very hot
    Show the answer

    About 13 °C, cool

    Cool! Bring a jacket, even in summer.

    About 13 °C: summers are cool.

    About 13.3 °C, with nights near 8.3 °C.

Nearby places

Explore next

For parents & teachers

What children will learn

  • Locate Reykjavík on the southwest coast of Iceland, in the North Atlantic.
  • Explain how geothermal water is used to heat a city.
  • Describe how Reykjavík grew from a settlement to a town and a capital.
  • Compare Reykjavík's climate with that of your own town.

Recommended ages: 3 to 17 · About 15 minutes

Talk about it

  • Reykjavík heats its homes with hot water from underground. How is your home heated, and where does that energy come from?
  • More than a third of Iceland's people live in Reykjavík. Why do you think so many people live in the capital?
  • Archaeologists found a Viking house under a city street. What might someone find under your street in a thousand years?

Try at home or in class

  • With a grown-up, fill two cups with warm water, wrap one in a towel, and check which stays warm longer: that is why hot-water pipes are insulated.
  • Draw a cross-section of the ground under Reykjavík: hot rock deep down, a well going down, and pipes carrying hot water to a house and a pool.
  • Compare: find your town's average July temperature and put it next to Reykjavík's 13 °C on a bar chart.

Key vocabulary: capital, geothermal, district heating, longhouse, municipality, settlement

Where these facts come from

  1. Wikidata , Wikimedia Foundation (CC0 1.0)
  2. Natural Earth vector data , Natural Earth (NACIS) (Public domain)
  3. Population 1 January 2026 , Statistics Iceland (Hagstofa Íslands)
  4. Reykjavík history , Visit Reykjavík (City of Reykjavík)
  5. Aðalstræti 10 and 16 (The Settlement Exhibition) , Reykjavík City Museum
  6. Fish & folk: 150 years of fisheries , Reykjavík City Museum (Reykjavík Maritime Museum)
  7. Hallgrímskirkja church , Visit Reykjavík
  8. About Harpa , Harpa Concert Hall and Conference Centre
  9. Drilling for hot water begins in the heart of Reykjavík , City of Reykjavík
  10. Reykjavík: climatological information , World Meteorological Organization, World Weather Information Service
  11. Wikimedia Commons , Wikimedia Foundation (Per file (public domain, CC0, CC BY or CC BY-SA); see each media record)

Checked, not yet human-reviewed. Last updated November 1, 2026. Spotted a mistake? Tell us.

Picture credits
  • Photo: Hedwig Storch, CC BY-SA 3.0, via Wikimedia Commons · source · license