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The park is open year-round, although extreme weather conditions and remote location limit accessibility.
It is recommended to visit it during the most favorable season, between November and March.
The park is home to vegetation typical of subantarctic forests, with a predominance of Magellan coigue (Nothofagus betuloides), lenga (Nothofagus pumilio) and cinnamon (Drimys winteri).
These dense, humid forests cover low-lying areas and river valleys, extending as far as altitude or extreme weather conditions permit.
In areas higher up or close to glaciers, trees give way to scrub, lichens, peat bogs and low-sized plants adapted to intense cold and poorly developed soils.
The vegetation in this park plays a fundamental role in regulating the local ecosystem and protecting against erosion caused by heavy rainfall.
The fauna of the Alberto de Agostini National Park is adapted to an isolated and humid subantarctic environment.
On the coasts and fjords, it is common to observe one-haired sea lions (Otaria flavescens), southern elephant seals (Mirounga leonina) and, at certain times of the year, humpback whales, orcas and southern dolphins.
Seabirds include the black-browed albatross, the giant southern petrel, the imperial cormorant and the Magellanic penguin.
In the most protected areas of the park, such as the forests and interior slopes, species such as the culpean fox, the screeching fox, the black carpenter and the Andean condor live. Biodiversity is strongly conditioned by the harsh climate, the scarce human intervention and the difficulty of access, which makes this park a unique natural refuge.
