Search continues for missing WA mum

A second day of searching for a mother whose car was found at a Perth beach has so far failed to find her.

Robyn Santen's family have not heard from her since Saturday night and have made a public appeal for her to return home, or for anyone with information on her whereabouts to contact police.

Her vehicle was found in a car park at City Beach on Sunday, but an extensive land and sea search did not begin until Monday.

Police said on Tuesday that there did not appear to be any suspicious circumstances surrounding the 36-year-old's disappearance.

The search for the mother-of-two resumed at first light but was scaled down in the evening.

Water police and divers suspended their search in the afternoon, but police said the land search would continue while weather conditions permitted.

Police said the search would resume on Wednesday morning.