Diamond Head

The basics

The Diamond Head trail is 1.6 miles (2.6 kilometers) round-trip, gaining over 550 feet (168 meters) from the trailhead to the summit and affording amazing views of the island and the Pacific Ocean. Unless you're trying to be the first one up to the summit in the morning, enjoy the hike at a steady pace and take in the views on the way—travelers usually allot one to two hours for the crater hike.

This crater adventure is often included on Oahu city tours or circle island tours that take in a number of Hawaiian landmarks and historic sites such as Manoa Falls, Pearl Harbor National Memorial, and Oahu's North Shore. Consider taking a guided Diamond Head tour to learn the history and local stories surrounding the popular crater.

Things to know before you go

• There is a fee to enter per car and a separate entrance fee for non-Hawaii residents; Diamond Head ticket types include parking and entry or simply entry. 

• Hiking up Diamond Head involves numerous steep stairs and isn't accessible for travelers in wheelchairs. The trail also includes a 225-foot (68-meter) tunnel that is well-lit but can feel a bit tight.

• Restrooms and water are located at the trailhead, but there are no facilities on the trail.

• Be sure to wear proper walking shoes.

• On tours of the crater with a guide, hotel transport is often included and reduces the need to find parking.

How to get there

The best way to reach the Diamond Head Crater hiking trail is by foot, bike, guided tour, car, or the local bus. There is limited parking if you choose to drive, and parking reservations are required for non-residents, so plan accordingly. Many travelers opt to take the bus to the Diamond Head State Monument bus stop.

When to get there

Diamond Head State Monument opens at 6am and closes at 6pm daily, with the last entry at 4:30pm. Considering over 2,000 people hike up the famous volcanic crater each day, you'll never have the trail completely to yourself, unless you start your day with a race to the top. Though crowds are heavy almost every day, Tuesdays tend to be especially heavy since one of Oahu's most popular sights—Hanauma Bay—is closed.

The best time to beat the heat is early in the morning, and there's usually a line in front of the gate for the 6am opening. Tours also arrive pretty early, so hiking late in the day may sometimes help you beat the crowds. If you plan to hike in winter, keep an eye out for humpback whales that leap from the waters offshore.

Diamond Head history

In Hawaiian, the mountain is known as “Leahi”—the name Diamond Head comes from British sailors who found calcite crystals embedded in the mountain and falsely claimed they were diamonds.

Can you go to Diamond Head without a tour?

Yes, you can go to Diamond Head without a tour, and visitors are free to hike to the summit on their own, as the trail is well-marked and well-trafficked. The entry fee to Diamond Head State Monument should be paid in advance via the online reservation system.

How long is the Diamond Head tour?

Tours of Diamond Head that include hiking to the summit typically take 1.5 to two hours. The Diamond Head Summit Trail is 1.6 miles (2.6 kilometers) round trip. Guided tours that include another activity, such as biking or having a local lunch, typically last around four hours.

What is the best time of year to go to Diamond Head?

The best time of year to go to Diamond Head is between May and September, which is typically the driest period on Oahu. The trail will be in better shape with less rainfall, and you won't need to worry about mud and slippery conditions.

Should I book a Diamond Head tour in advance?

Yes. It is a good idea to book your Diamond Head tour in advance. Diamond Head is one of Oahu's most popular destinations, and tours often sell out early. Avoid disappointment by booking your chosen date and time as soon as possible.

Are there restrooms at Diamond Head?

Yes, there are restrooms at the beginning of the trail up Diamond Head, a few food and souvenir vendors, and a water fountain. However, there are no facilities at the summit lookout, so take care of business before you begin your hike.

What should I wear to Diamond Head?

You should wear light, comfortable clothing at Diamond Head—expect to work up a sweat. Most importantly, you should wear comfortable walking shoes, preferably hiking or trail running shoes. Protect yourself from the intense sun by wearing sunscreen, sunglasses, and a sun hat.

Ways to explore

Diamond Head State Monument is accessible via a moderately steep trail, which ascends from the crater floor to the top; the trail features 560 feet (170 meters) of elevation gain on a round-trip of 1.6 miles (2.6 kilometers). Entry and parking reservations are required for non-resident visitors. Travelers can hike independently or book a tour that includes transportation, guided commentary, audio guides, and souvenir packages. Many full-day Oahu tours start with Diamond Head in the morning before visiting other island highlights.

Accessibility

The crater floor and visitor center are wheelchair accessible, but the hiking trail is steep, uneven, and not ADA-compliant. Service animals are permitted.

Age limits

None; small children may need to be carried (entry is waived for kids aged 3 and under).

What to pack

Water, sunscreen, hat, credit card for snacks and entry (cash not accepted)

What to wear

Closed-toe walking shoes with traction and breathable clothing are recommended. Flip-flops and sandals are not suitable for the steep, rocky summit path.

Not allowed

Pets (except service animals), drones, smoking, bicycles, alcohol

Amenities

None along the trail. Restrooms, a drinking fountain, an interpretive kiosk, and a gift shop are available at the visitor center.

Address

Diamond Head is located approximately 2 miles (3 kilometers) southeast of Waikiki, on Oahu’s South Shore. It’s commonly visited during island tours or early morning outings.

Driving

From Waikiki, take Diamond Head Road until you reach the crater entrance. Non-resident visitors must reserve entry and parking online in advance.

Public transportation

Take TheBus Route 2, 2L, or 14 and disembark at Diamond Head Road (about a 10–15 minute uphill walk to the trailhead). The Waikiki Trolley Green Line also stops nearby.

Best times to visit

Arrive early—the gates open at 6am—to beat the crowds, enjoy cooler temperatures, and catch potential whale sightings from the summit during the winter months.

Best days to visit

Weekdays tend to have fewer crowds and easier access to parking, especially in the morning.

Best months to visit

Spring (April to June) and fall (September to November) offer mild weather and fewer tourists. Winter (December to March) has whale-watching opportunities, but increased crowds.