As is common with those who work on the sea, Aearandir has a lean and athletic build, moving with an assured confidence and natural grace. His long blonde hair is usually pulled back into a ponytail and due to the nature of his work, is in an unkempt condition (by elven standards). His deep blue eyes sparkle with mirth and his good humour is on open display, his hearty laughter can often be heard echoing across the docks. Only on the rarest of moments does his demeanour change to one of sadness and deep reflection. A lover of good music, he carries a small finely crafted harp in a weather-beaten leather carry case slung by his side, playing whenever he can. A habit much appreciated by the crew while at sea. He sings on occasion but, even although his singing voice is quite fine, he generally allows others he perceives to be more gifted vocally to sing in his stead.

As Lord Curugirion's second in command he is usually to be seen wearing the blue uniform of the Mithdirith or, if out in the wilderness, the muted colours and hues of the field garb worn by scouts of the household. In either case, fastening his cloak is a clasp, wrought in the likeness of an Uilos flower, wreathed by a sprig of Oiolairë, the Green Bough of Return.