Belize Barrier Reef Reserve System Nature Reserve

Extensive barrier reef system with high marine biodiversity.

The Belize Barrier Reef Reserve System comprises coral atolls, mangroves and the Blue Hole. Visitors come for scuba diving, snorkeling, marine life encounters and boat trips to offshore cayes and reserves.

Main image
Admiralty Chart No 1797 Ranguana Cay to Columbus Cay, Published 1929.jpg

Belize Barrier Reef Reserve System at a Glance#

Address: Belize Barrier Reef Reserve System, off the coast of Belize (Southern District includes parts such as Glover’s Reef and Sapodilla Cayes)

Website: https://whc.unesco.org/en/list/764/

Hours: Marine areas open year-round; dive operator schedules vary

Admission: Marine park fees and some reserve permits may apply; Belize uses conservation fees at certain sites

About Belize Barrier Reef Reserve System#

The Belize Barrier Reef Reserve System is a marine and coastal protected area off the coast of Belize that comprises barrier reef, atolls, mangroves and sea-grass beds. It is the largest reef system in the Northern Hemisphere and an internationally significant marine ecosystem.

The reef system developed through coral growth over millennia and has supported coastal communities for centuries. Modern conservation efforts have established protected areas to manage fisheries, tourism and habitat protection.

The reserve system runs along Belize’s Caribbean coast, offshore from mainland Belize and its cayes, extending for several hundred kilometres and encompassing multiple atolls and marine reserves.

  • Scale and components: The Reserve System runs roughly along the coast of Belize for about 300 kilometres and includes barrier reef, atolls, cayes, seagrass beds and mangroves crucial for coral, fish and sea turtle habitats.
  • Great Blue Hole access: The Great Blue Hole at Lighthouse Reef is a well-known scuba diving destination reached by boat from Belize City and coastal towns such as San Pedro and Caye Caulker.

What to See#

  • Turneffe Atoll: Turneffe Atoll is the largest atoll in the system and contains extensive coral reefs, lagoons and mangrove islands that support diverse marine habitats.
  • Glover’s Reef: Glover’s Reef is a large atoll and marine reserve composed of narrow cayes, reef crest and deep lagoon channels important for reef research and conservation.
  • Lighthouse Reef / Great Blue Hole: Lighthouse Reef contains the Great Blue Hole, a near-circular marine sinkhole that is a widely known dive site adjacent to the reef atoll.

How to Get to Belize Barrier Reef Reserve System#

International flights arrive in Belize City; from there, boats or small planes reach outer atolls and cayes. Many dive operators and liveaboard boats depart from Belize City and San Pedro (Ambergris Caye).

Tips for Visiting Belize Barrier Reef Reserve System#

  • If diving or snorkeling, book with a certified operator who contributes to reef conservation programs.
  • Visit the outer atolls (e.g., Turneffe Atoll, Lighthouse Reef) for clearer water and bigger pelagic life - these require liveaboards or day trips.
  • Respect marine park rules: no touching coral, no taking shells, and follow guides' instructions to protect fragile reefs.

Best Time to Visit Belize Barrier Reef Reserve System#

Best diving months are December-April for calm seas and excellent visibility; avoid hurricane season when possible.

Dry season (best)
December-April · 24-29°C
Clear water and calm seas; peak season for diving and snorkeling.
Wet season
May-November · 25-31°C
Warmer water and lower shoulder-season prices, but risk of storms/ hurricanes in late summer/autumn.
Winter
December-February · 22-27°C
Cooler air, excellent visibility underwater; busiest months for tourism.

Weather & Climate near Belize Barrier Reef Reserve System#

Climate

Tropical climate with consistently warm temperatures year-round. Temperatures range from 20°C to 30°C. Abundant rainfall (1862 mm/year), wettest in October.

Air Quality: AQI 35 Good
Best Time to Visit
MarchAprilFebruary
Temperature & Rainfall
Temperature Range
35°
Warmest Month
18°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Excellent 20° - 26° 23° 121 mm partly cloudy 81% 3.0 m/s 1.5 high 11.1h
February Excellent 21° - 27° 24° 76 mm mostly sunny 79% 3.3 m/s 1.9 very high 11.5h
March Ideal 22° - 28° 25° 58 mm mostly sunny 77% 3.7 m/s 2.2 extreme 11.9h
April Ideal 23° - 30° 27° 45 mm mostly sunny 77% 3.9 m/s 2.4 extreme 12.4h
May Excellent 24° - 30° 30° 90 mm partly cloudy 79% 3.5 m/s 2.4 extreme 12.8h
June Very Good 24° - 30° 30° 201 mm partly cloudy 83% 3.5 m/s 2.3 extreme 13.0h
July Very Good 24° - 30° 27° 222 mm partly cloudy 83% 3.4 m/s 2.4 extreme 12.9h
August Very Good 24° - 30° 27° 181 mm partly cloudy 82% 3.0 m/s 2.4 extreme 12.6h
September Very Good 24° - 30° 31° 211 mm partly cloudy 83% 2.7 m/s 2.2 extreme 12.1h
October Good 23° - 29° 26° 271 mm partly cloudy 84% 2.6 m/s 1.8 very high 11.6h
November Good 21° - 28° 25° 205 mm partly cloudy 82% 2.6 m/s 1.5 high 11.2h
December Very Good 21° - 27° 24° 181 mm partly cloudy 82% 2.7 m/s 1.4 high 11.0h