UNESCO proclaimed Kihnu's cultural space and traditions as a Masterpiece of the Oral and Intangible Heritage of Humanity on 7 November 2003.

The latter is an especially important part of the island's traditions and accompanies handicrafts, religious feasts, and other celebrations.

Ancient runo-styled songs are also important, as is traditional clothing adorned with decorations and bright colours.

There are elaborate wedding traditions, which are considered the "most complex and bright expression" of Kihnu culture.

Young women have traditionally organised evening get-togethers (ülalistmine, i.e., "sitting (staying) up (late)") to do handicrafts.

[8] The island has a sandy interior and a rocky coast made up of more than fifty islets, which are an important nesting ground for birds.

Along the dunes, beach ridges, and sands of the eastern part, the island reaches its maximum height of 29.6 m above sea level.