After the glacial period ended, the Hogan Group were the first islands to become isolated by rising sea levels.

[2] The islands were named in 1802 by John Black, captain of the brig Harbinger, after Michael Hogan, the owner of his ship.

[2] However, that activity ceased after causing considerable damage to the vegetation and the natural springs there.

[citation needed] Hogan Island possesses an oceanic climate (Köppen: Cfb), with tepid summers and mild winters.

Temperatures are moderated by its position in the Bass Strait and from frequent westerlies in all seasons.