The 44-year-old Robberts was reported as missing after leaving his holiday home in Swakopmund on Tuesday.
According to the police, Robberts told his family that he was going to take his car to a car wash in Mondesa but did not return.
His father reported him as missing on Wednesday.
Robberts was found at the seaside by his fiancée around 18:30 on Thursday.
He is in good condition and reunited with his family.
The police file has been closed.
