40th parallel south

"40 degrees south" redirects here. For the magazine, see Tasmania 40° South.

The 40th parallel south is a circle of latitude that is 40 degrees south of the Earth's equatorial plane. It crosses the Atlantic Ocean, the Indian Ocean, Oceania, the Pacific Ocean and South America. Its long oceanic stretches are the northern domain of the Roaring Forties.

40°

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40th parallel south

On 21 June 2018, the sun is at 26.17° in the sky and at 73.83° on 21 December, in King Island, Tasmania, which is near the 40th parallel.

The maximum altitude of the Sun is > 35.00º in April and > 28.00º in May.

40th parallel south also marks a line beyond which Andromeda constellation can no longer be observed.

Around the world

Starting at the Prime Meridian and heading eastwards, the parallel 40° south passes through:

Coordinates	Country, territory or ocean	Notes
40°0′S 0°0′E	Atlantic Ocean
40°0′S 20°0′E	Indian Ocean
40°0′S 143°53′E	Australia	King Island, Tasmania
40°0′S 144°7′E	Indian Ocean	Bass Strait
40°0′S 147°53′E	Australia	Flinders Island, Tasmania
40°0′S 148°17′E	Pacific Ocean	Tasman Sea
40°0′S 175°3′E	New Zealand	Manawatū-Whanganui region – passing just south of Whanganui Hawke's Bay region – passing through Waipukurau
40°0′S 176°54′E	Pacific Ocean
40°0′S 73°42′W	Chile	Los Ríos Region – passing through Punta Galera and Pirihueico Lake
40°0′S 71°40′W	Argentina	Neuquén Province Río Negro Province Buenos Aires Province
40°0′S 62°20′W	Atlantic Ocean

See also

• 39th parallel south
• 41st parallel south
• Roaring Forties
• Project Loon