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The Great Barrier Reef has a tropical climate, with average temperatures in summer of between 24 and 33 degrees Celsius, in winter 14 to 26 degrees. Being a wet tropic climate, there are only 2 seasons, 'the green' and 'the dry'.here is the Great Barrier Reef? The Great Barrier Reef, one of the natural wonders of the world, begins just off the coast of Bundaberg, 368 kilometres north of the state capital, Brisbane, and extends over 2000 km north to western Papua New Guinea.
This means that temperature and climate in the great barrier reef is sub-tropical in the south, getting more tropical as you head north. Unlike temperate regions, tropical and sub-tropical regions don't experience the four seasons; instead there are just two-a wet season and dry season.ith the exception of a few islands in the very south of the Great Barrier Reef Marine Park Authority boundaries, the entire Reef lies within the tropical belt between the Tropic of Capricorn and the Equator.