Tlingit Peak is located in the Fairweather Range of the Saint Elias Mountains.

It is set within Glacier Bay National Park and Preserve and is situated 2.14 miles (3.44 km) southwest of Marble Mountain.

Although modest in elevation, topographic relief is significant as the summit rises above tidewater of Tyndall Cove in one mile (1.6 km).

Based on the Köppen climate classification, Tlingit Peak is located in a marine subpolar climate zone, with long, cold, snowy winters, and cool summers.

[5] Weather systems coming off the Gulf of Alaska are forced upwards by the Saint Elias Mountains (orographic lift), causing heavy precipitation in the form of rainfall and snowfall.