kids encyclopedia robot

Oʻahu facts for kids

Kids Encyclopedia Facts
Quick facts for kids
Oʻahu
Nickname: Gathering Place
Oahu.jpg
Map of Hawaii highlighting Oahu.svg
Geography
Location 21°30′N 158°00′W / 21.5°N 158.0°W / 21.5; -158.0
Area 596.7 sq mi (1,545 km2)
Area rank 3rd largest Hawaiian Island
Highest elevation 4,025 ft (1,226.8 m)
Highest point Kaʻala
Administration
United States
Symbols
Flower ʻilima
Color Melemele (yellow)
Largest settlement Honolulu
Demographics
Population 1,016,508 (2020)
Pop. density 1,704 /sq mi (657.9 /km2)

Oʻahu, also known as Oahu, is a beautiful island in the Hawaiian Islands. It is the third-largest island and home to the most people in the U.S. state of Hawaii. The capital city of Hawaii, Honolulu, is located on Oʻahu's southeast coast. Oʻahu and the nearby uninhabited Northwestern Hawaiian Islands together form the City and County of Honolulu. As of 2024, about 998,747 people lived on Oʻahu. This means about 70% of all people in the Hawaiian Islands call Oʻahu home.

Oʻahu stretches about 44 miles (71 km) from east to west. It is about 30 miles (48 km) from north to south. The island's coastline is 227 miles (365 km) long. Including smaller islands like Ford Island, Oʻahu covers about 596.7 square miles (1,545.4 km2). This makes it the 20th-largest island in the United States.

Some famous places on Oʻahu include Waikīkī Beach, Pearl Harbor, Diamond Head crater, and the amazing North Shore waves.

Understanding Oʻahu's Name

Oʻahu is often called "The Gathering Place." This nickname helps describe how many people live and visit the island. The Hawaiian word for Oʻahu might mean "gathering of objects." This is because the Hawaiian language has special sounds, like the ʻokina (ʻ), that change word meanings. The exact meaning of Oʻahu in Hawaiian is not fully known.

Oʻahu's Rich History

Early Settlers and Ancient Kingdoms

No one knows exactly when the first people came to Oʻahu. Scientists believe that Polynesian explorers first arrived between 900 and 1200 A.D. These brave travelers likely came from islands like the Marquesas or Tahiti. They used amazing navigation skills to cross the ocean.

One of Oʻahu's first important leaders was King Maʻilikūkahi. He was known for making fair laws. His family ruled the island for over 300 years. Later, kings like Kualiʻi were strong warriors. In 1773, Kahahana became king.

European Arrival and Unification

On January 19, 1778, Captain James Cook was the first European to see Oʻahu. This was during his third big journey of exploration. He did not land on Oʻahu at that time. Instead, he visited other Hawaiian islands first. Later, in 1779, Captain Charles Clerke, Cook's second-in-command, landed at Waimea Bay on Oʻahu. This was the first recorded visit by a non-Polynesian person to the island. Captain Cook had passed away earlier that month on the island of Hawaii.

When Captain Cook arrived, the Hawaiian Islands had many different leaders. They often fought for control. In 1783, King Kahekili II of Maui took over Oʻahu. He made his son, Kalanikūpule, the ruler. But in 1795, Kamehameha I defeated Kalanikūpule in the Battle of Nuʻuanu. Kamehameha I then created the Hawaiian Kingdom, uniting most of the islands. The last islands joined the kingdom in 1810.

Honolulu Becomes the Capital

In the late 1700s, Waikīkī was an important town on Oʻahu. But as more ships came for trade, Honolulu grew larger. Its harbor was easier for ships to use. In 1845, King Kamehameha III made Honolulu the capital of the Hawaiian Kingdom. King Kalākaua later built the beautiful ʻIolani Palace in Honolulu. This palace is still the only royal palace in the United States. In 1893, a group of businessmen, with help from U.S. Marines, changed the government. They ended the Hawaiian monarchy and created the Republic of Hawaii. This republic later joined the United States.

Pearl Harbor and World War II

On December 7, 1941, the Imperial Japanese Navy launched a surprise attack on Pearl Harbor in Oʻahu. This event brought the United States into World War II. The attack targeted the U.S. Navy's Pacific Fleet. Many ships and aircraft were damaged or destroyed. Sadly, many American servicemen and civilians lost their lives. The sinking of the USS Arizona alone caused 1,177 deaths. This day is remembered as a very important moment in history.

After World War II, Oʻahu became a popular place for tourists. Millions of people visit each year. They come to enjoy the beaches, learn about history, and shop. Many visitors come from the mainland United States and Japan.

Aerial view of Pearl Harbor on 1 June 1986 (6422248)
Pearl Harbor is home to a large U.S. Navy fleet. It was attacked on December 7, 1941, bringing the United States into World War II.
Arizona Memorial at Pearl Harbor, Hawaii
The USS Arizona Memorial honors those lost in the Pearl Harbor attack.

Oʻahu's Geography and Climate

Volcanic Origins and Mountain Ranges

Oʻahu, like all the Hawaiian Islands, was created by volcanoes. It began forming from the ocean floor about 4 million years ago. Today, the island has two main mountain ranges. These are the Waiʻanae and Koʻolau Ranges. They are the remains of ancient, extinct volcanoes. The highest point on Oʻahu is Kaʻala Peak. It stands 4,003 feet (1,220 m) above sea level in the Waiʻanae Range.

Oahu2021OSM
A detailed map of Oʻahu.

Weather Wonders and Temperatures

Oʻahu once had the longest recorded rain shower. It rained for 247 days straight between 1993 and 1994! The average temperature on Oʻahu is usually between 70 and 85 degrees Fahrenheit (21-29°C). The warmest months are from June to October. Winters are a bit cooler, but still pleasant. Temperatures then average between 68 and 78 degrees Fahrenheit (20-26°C).

Weather chart for Oʻahu
J F M A M J J A S O N D
 
 
14
 
27
18
 
 
27
 
27
19
 
 
105
 
27
17
 
 
2
 
30
19
 
 
6
 
29
18
 
 
2
 
31
21
 
 
8
 
30
22
 
 
10
 
28
18
 
 
2
 
28
23
 
 
95
 
28
21
 
 
21
 
28
21
 
 
25
 
25
20
temperatures in °C
precipitation totals in mm

Exploring Oʻahu: Fun Places to Visit

Tourism is very important to Oʻahu's economy. Many people visit the island every year. They come to enjoy its natural beauty and learn about its culture. Oʻahu has many popular places for visitors. These include beautiful beaches like Waikīkī Beach and Hanauma Bay. Other exciting spots are ʻIolani Palace, Diamond Head, and Kualoa Ranch. You can also visit the Bishop Museum to learn about Hawaiian history.

Famous People from Oʻahu

Many talented people have come from Oʻahu, including:

See also

Kids robot.svg In Spanish: Oahu para niños

  • Honolulu Volcanics
  • National Register of Historic Places listings in Oʻahu
  • Oahu Ice and Cold Storage Company
kids search engine
Oʻahu Facts for Kids. Kiddle Encyclopedia.