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Great Blue Hole

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Vibrant turquoise depths reveal ancient mysteries

The Great Blue Hole lies off Belize’s Caribbean coast as a massive underwater sinkhole carved by ancient rivers and sea level changes. Measuring about 300 meters across with depths near 125 meters, it draws divers from around the world to see its clear blue waters framed by limestone cliffs. The site sits within a protected marine reserve where coral formations thrive alongside diverse fish species. Its geological shape makes it popular for scientific study as well as adventure diving experiences in Central America’s coastal waters.

Landmark in Belize
Climate zone: Tropical savanna

Tropical savanna: Tropical climates with distinct wet and dry seasons, warm year-round, featuring grasslands with scattered trees and shrubs.

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Ticket price: $$$
$Cheap
$$Medium
$$$Expensive, upscale
$$$+Very expensive, luxury
Safety: 6.4
General Safety:7
Accessibility:4
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Tourist English: 5/5
English is widely spoken by most tour operators and local guides around the Great Blue Hole, especially in San Pedro and nearby resorts. Visitors will find no language barrier when booking tours or asking for directions.
Last update: 12 Oct 2026
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Great Blue Hole Summary
World-class for scuba diving. Divers descend into a massive underwater sinkhole filled with stalactites and deep marine formations.
Opening hours:
Open 24/7
Belize – Quick facts
Power Grid: 110 V, 60 Hz
Plug: Type A , Type B
Type A:
Diagram of a Type A power plug
Type B:
Diagram of a Type B power plug

Read about power adapters
Currency: Belize Dollar (BZD)
£1 ≈ BZD 2.68
Cashless info: Rating 4/5
Cashless payments are becoming more common in Belize, especially in tourist areas. However, cash is still often used in smaller businesses.

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eSIM providers: Best value: Saily
Flexibility: Airalo
Read our in-depth comparison
Tipping: Tipping is customary, with 10-15% being the standard in restaurants. Tipping taxi drivers and hotel staff is also appreciated.
Public drinking: Public drinking is allowed in designated areas, including most beaches and public events.
Public smoking: Smoking is prohibited indoors in public spaces, including restaurants and bars.
Independence Day
(September)
Expect public celebrations and some business closures.
Garifuna Settlement Day
(November)
Expect celebrations of Garifuna heritage, street events, and music.
Emergency contact: Emergency Number: 911
Taxi apps: Uber
Other: Belize is famous for its beautiful beaches, tropical wildlife, and the Great Blue Hole, attracting tourists interested in diving and nature activities.
Best times to travel

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for Great Blue Hole, Belize
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High season: Jan. - April, Dec.
Shoulder season: May, Nov.
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Hurricane season June to November, most active August to October; boat trips to the atoll are cancelled in rough seas
Blue Hole dive is deep (about 40 m), so advanced certification is needed; snorkellers visit the nearby reef instead

The Great Blue Hole is a striking underwater sinkhole located off the coast of Belize. It lies within the Belize Barrier Reef Reserve System a UNESCO World Heritage Site. This natural formation attracts divers and marine enthusiasts from around the globe due to its unique shape and depth. The hole stretches more than 300 meters across with vertical walls that drop sharply into dark waters.

Geologists say it formed during a period of lower sea levels thousands of years ago. As water receded limestone dissolved creating this massive cavity over time. Today sunlight filters through the surface illuminating layers of sediment and marine life below. The site provides clear visibility for those willing to explore its depths though proper training is required.

Marine biologists observe diverse species thriving in surrounding reefs including groupers barracudas and colorful corals. Seasonal currents influence water movement making certain months better for diving. Visitors often notice schools of fish darting near the edge while larger predators patrol deeper zones. The area supports conservation efforts aimed at protecting fragile ecosystems.

Access to the Great Blue Hole typically involves boat trips from nearby towns such as San Pedro or Caye Caulker. Local operators offer guided tours that include equipment and safety briefings. Photography opportunities abound for those interested in capturing geological wonders above and below water. Respecting environmental guidelines ensures this site remains preserved for future study and adventure.

Knowledge before you go

  • Book a certified dive guide before visiting the Great Blue Hole.
  • Arrive early to avoid crowds; the site opens at sunrise and daylight enhances underwater visibility.
  • Check weather forecasts; calm seas are essential for safe diving and sudden storms can close access.
  • The Great Blue Hole is part of the Belize Barrier Reef Reserve System, a UNESCO World Heritage site with rich marine biodiversity.

How to travel to Great Blue Hole

The Great Blue Hole, located off the coast of Belize in the Caribbean Sea, is accessible primarily by boat. Travelers typically reach it via guided day trips departing from San Pedro, Ambergris Caye or Caye Caulker. These tours often combine snorkeling and diving excursions to explore the site’s unique underwater formations. The nearest international airport is Philip S. W. Goldson International Airport (BZE) in Belize City, followed by a 1‑hour drive or short flight to coastal towns before boat transfers to the Blue Hole. Some private charters also offer direct access for those seeking flexibility. Visibility and water conditions may affect accessibility during certain seasons.

Access summary

  • From Philip S. W. Goldson International Airport (BZE): Taxi to Caye Caulker 30–45 min.
  • From Belize City: Ferry to Caye Caulker 1–1.5 hrs; from San Pedro, 20–25 min by boat.
  • By charter flight from San Ignacio or San Pedro for direct access to the Great Blue Hole.

Where to stay near Great Blue Hole

Accommodations around the Great Blue Hole range from rustic eco‑lodges to upscale beachfront resorts, catering to both budget travelers and luxury seekers. Most visitors stay in San Pedro or Hopkins on Ambergris Caye, where boutique inns offer sea‑view rooms at mid‑range rates BZD 160 – 300 (£59.41 – 111.40) per night. For those desiring a more secluded experience, the mainland’s Placencia Peninsula hosts eco‑villages with private plunge pools, typically priced between BZD 240 – 500 (£89.12 – 185.67). The area is renowned for its marine‑themed suites featuring glass walls to observe local reef life. Many properties emphasize sustainable practices, using solar power and locally sourced materials, ensuring a comfortable stay while preserving the region’s natural beauty.

Hotel recommendations

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Budget snapshot
Costs compared to home

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-33 %
Daily expenses in the region are around 33% lower than the average across United States. That means you'll spend considerably less on meals and getting around.
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The exchange rate price factor shows how expensive or cheap a currency currently is compared to its historical average. It's a quick way to see if a country is currently more or less affordable due to exchange rate changes.

-4 %
Your exchange rate (GBP to BZD) is 4% better than in recent years. That means travelling now costs around the same compared to the past.

Safety information overview

General safety
7
The Great Blue Hole in Belize is generally safe for travelers, with low crime rates and well‑established dive operators. Visitors should follow local safety guidelines: stay within marked dive zones, use certified guides, avoid night diving and respect marine protected areas.
Accessi­bility
4
The Great Blue Hole in Belize offers limited accessibility: a short walk from the parking area to the dive site, but uneven terrain and no wheelchair ramps. Good for experienced divers; less suitable for mobility‑restricted visitors needing assistance.
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