Carnac Island
Island Protected island off Perth home to Australian sea lions
A small nature reserve off Fremantle, Carnac Island hosts sea lions, seabirds and rocky reefs; day trips and snorkeling boats bring visitors from Perth for wildlife encounters.
Carnac Island is a small, uninhabited island off the coast of Fremantle in Western Australia, protected as a nature reserve. It is known for its coastal vegetation and for native marine wildlife.
The island is a focus for wildlife viewing, with commonly seen sea lions and seabirds; there are no permanent facilities and visitors normally arrive on commercial boat tours or private craft. Overnight stays are not permitted under reserve management rules.
The island has been managed for conservation and public safety, and landing is regulated to protect wildlife and habitats. Beaches, rocky shorelines and shallow reefs around the island are used for short shore visits and snorkelling by licensed operators.
Carnac Island lies in the Indian Ocean off the Fremantle coast, within sight of the Perth metropolitan coastline and reached by a relatively short boat trip from Fremantle.
- Wildlife viewing: Popular destination for day boat trips and wildlife viewing from the water, particularly for Australian sea lions and seabirds.
- Access and facilities: There are no visitor facilities on the island; landings are managed because it is a protected nature reserve, so most visits occur via licensed tours from Fremantle.
Best Time to Visit Carnac Island #
Weather & Climate near Carnac Island #
Subtropical climate with warm summers (peaking in February) and cool winters (coldest in August). Temperatures range from 10°C to 27°C. Moderate rainfall (742 mm/year) with a pronounced dry season.
January
January is mild with highs of 27°C and lows of 19°C. Light rainfall.
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February
February is the warmest month with highs of 27°C and lows of 20°C. Light rainfall and breezy conditions.
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March
March is mild with highs of 26°C and lows of 19°C. Light rainfall.
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April
April is mild with highs of 23°C and lows of 15°C. Moderate rainfall (38 mm).
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May
May is cool with highs of 20°C and lows of 14°C. Significant rainfall (103 mm).
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June
June is cool with highs of 18°C and lows of 11°C. Significant rainfall (152 mm).
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July
July is cool with highs of 17°C and lows of 11°C. The wettest month with heavy rain (158 mm) and breezy conditions.
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August
August is the coolest month with highs of 17°C and lows of 10°C. Significant rainfall (107 mm).
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September
September is cool with highs of 18°C and lows of 11°C. Moderate rainfall (70 mm).
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October
October is cool with highs of 19°C and lows of 12°C. Moderate rainfall (39 mm).
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November
November is mild with highs of 21°C and lows of 15°C. Light rainfall.
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December
December is mild with highs of 24°C and lows of 17°C. The driest month with just 7 mm.