[3] Meru Betiri National Park has a varied topography reaching from a plain coast to highlands with an altitude of almost 1,200 metres (3,900 ft).

From November to March, the westerly wind brings rainfall to the area, whereas the dry season occurs from April to October.

[4] As a result of its diverse topography, Meru Betiri NP contains five distinct vegetation types:[4] The rare parasitic plant Rafflesia zollingeriana was rediscovered in Meru Betiri NP.

[3] Meru Betiri National Park is known as the last habitat of the Javan tiger (Panthera tigris sondaica) which is now considered extinct, with the last sighting having been recorded in 1976.

[4] In 1982 the sanctuary was expanded to its current extent of 580 km2 including a marine area of 845 ha.