Best placed in May. It is deep in the southern sky and never rises for most of the northern hemisphere.
Octans is centred near right ascension 20.0 hours, declination -80°. It is deep in the southern sky and never rises for most of the northern hemisphere.
It reaches its highest point in the sky around local midnight in May, which is when it is easiest to pick out. Earlier in the year it rises before dawn; later, it is already setting in the evening.
SkyRef draws Octans in its real position for wherever you are, right now, along with the other 88 IAU figures.