Mary River National Park
Park Protected area preserving wetlands and floodplain ecosystems
A national park in Australia’s Northern Territory protecting floodplain and savanna along the Mary River. Visitors come for birdwatching, boat safaris and crocodile-spotting tours.
Mary River National Park is a protected area in the Top End of Australia’s Northern Territory that conserves floodplains, rivers and wetlands associated with the Mary River system. The park is notable for abundant birdlife and one of the highest reported densities of saltwater crocodiles in northern Australia.
Recreational activities include wildlife cruises, fishing and boat-based viewing of the floodplain habitats; much of the park is accessible from the Arnhem Highway. The landscape alternates between billabongs, floodplain grasslands and patches of woodland, creating important habitat for waterbirds.
The park lies in the coastal plains of the Northern Territory, roughly east-southeast of Darwin and within the greater Arnhem Land bioregion; access is commonly via the Arnhem Highway and regional arterial roads.
- Wildlife viewing: High densities of saltwater crocodiles and waterbirds make the park a prime location for wildlife viewing; guided boat cruises on the Mary River are a common way to see wildlife.
How to Get to Mary River National Park #
About 100-150 km east of Darwin depending on the park sector. Reachable by sealed and unsealed roads; 4x4 recommended for many internal routes. Organized tours from Darwin are available.
Tips for Visiting Mary River National Park #
- Hire a guide or use park maps - floodplains and river systems can be confusing and access to remote zones requires local knowledge.
- Bring binoculars for birdwatching; the park supports significant waterbird populations.
- Avoid the wet season when roads can become impassable; arrange transport with a 4x4 vehicle.
Best Time to Visit Mary River National Park #
Visit during the dry season (May-October) for reliable access and excellent wildlife viewing; wet season offers dramatic floods but limited road access.
Weather & Climate near Mary River National Park #
Mary River National Park's climate is classified as Tropical Savanna - Tropical Savanna climate with hot summers (peaking in November) and warm winters (coldest in July). Temperatures range from 18°C to 33°C. Abundant rainfall (1597 mm/year), wettest in January with a pronounced dry season.
January
January is hot with highs of 31°C and lows of 25°C. The wettest month with heavy rain (376 mm).
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February
February is warm with highs of 31°C and lows of 25°C. Heavy rain (335 mm).
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March
March is warm with highs of 31°C and lows of 24°C. Heavy rain (316 mm).
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April
April is warm with highs of 32°C and lows of 24°C. Significant rainfall (109 mm).
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May
May is warm with highs of 31°C and lows of 22°C. Light rainfall.
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June
June is warm with highs of 30°C and lows of 19°C. Almost no rain.
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July
July is mild with highs of 29°C and lows of 18°C. The driest month with just 1 mm.
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August
August is warm with highs of 30°C and lows of 19°C. Almost no rain.
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September
September is warm with highs of 32°C and lows of 22°C. Light rainfall.
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October
October is hot with highs of 33°C and lows of 24°C. Moderate rainfall (52 mm).
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November
November is the hottest month with highs of 33°C and lows of 25°C. Significant rainfall (110 mm).
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December
December is hot with highs of 32°C and lows of 25°C. Heavy rain (257 mm).
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