The town is located in the Mendi River Valley, 1,675 metres or 5,495 feet above sea level, on the limestone hills from west to east.

[4] Mendi features cool mornings, warm afternoons and heavy rainfall throughout the year.

[5] Mendi is mostly dependent on air transport, though there is road access through the nearby town of Mount Hagen.

[3] In June 2018, a regional court in Mendi ruled against a losing candidate's challenge to a provincial election.

Rioting followed, with looting and arson, including to a Link PNG plane at the regional airport.