The 61st parallel south is a circle of latitude that is 61 degrees south of the Earth's equatorial plane. No land lies on the parallel—it crosses nothing but the Southern Ocean.
At this latitude the sun is visible for 19 hours, 16 minutes during the December solstice and 5 hours, 32 minutes during the June solstice.[1] On December solstice, the sun's altitude is 52.44 degrees and on June solstice, it is 5.56 degrees.
The lowest latitude where civil twilight can last all night lies approximately on this parallel.
Starting at the Prime Meridian and heading eastwards, the parallel 61° south passes through:
| Co-ordinates | Ocean | Notes |
|---|---|---|
| Southern Ocean | South of the Atlantic Ocean | |
| South of the Indian Ocean | ||
| South of the Pacific Ocean Passing through the Drake Passage between South America and the Antarctic Peninsula | ||
| South of the Atlantic Ocean Passing just north of Elephant Island, and Clarence Island (claimed by, and) Passing just south of the South Orkney Islands, (claimed by) |