Police concerned for missing NSW man

Police are searching for a 42-year-old man who has gone missing from his home on the NSW Central Coast.

Geoffrey Brock was reported missing from Budgewoi on Saturday after his fiancee returned home at about 7pm (AEDT) and could not locate him.

"Investigators and family have extreme concerns for his welfare, as this behaviour is very out of character," police said in a statement.

On Sunday police, assisted by police aircraft and State Emergency Service workers, began searching for Mr Brock.

He is described as being of Caucasian appearance, about 188cm tall with a shaved head.

He was last seen wearing a black T-shirt with white writing on it, red knee-length shorts and black compression socks.

Police are appealing for anyone with information about Mr Brock to contact Tuggerah Lakes Local Area Command or Crime Stoppers on 1800 333 000.