A Sunshine Coast bank has been robbed by a man claiming to be armed.

Police are investigating the robbery of the Buddina bank, which occurred about 3pm (AEST) on Monday.

A man entered the Nicklin Way bank before approaching a teller and producing a note stating he was armed and wanted money.

The teller complied with his demands and the man fled the scene with a sum of cash.

The man is described as being about 175cm tall with a tanned complexion. He was wearing a dark blue shirt, pants and cap and black sunglasses.

No one was injured during the incident.