BANGKOK - Thai King Bhumibol Adulyadej's condition is good and he no longer has fever, the palace said on Monday, 30 days after he was admitted to hospital suffering from fever and fatigue.

Concerns about the health of King Bhumibol, the world's longest-reigning monarch at age 81, led to a sharp fall in Thai stock prices and the local baht currency on October 14 and October 15.

His majesty the king's general condition is good. His majesty had no fever. He has a good appetite and can sleep well, said a statement from the Bureau of the Royal Household.

The king, a figure of unity in polarized Thailand, is regarded as semi-divine by many of the country's 67 million people. His health is an extremely sensitive topic.

Palace statements on his condition have often been opaquely worded and the royal household reported on Saturday that his lungs still showed some inflamed abnormality.

His fever subsided on October 1 but returned on October 16, according to statements.

Investors remain on edge despite assurances from policymakers and the palace itself that the monarch is on the mend after a bout of pneumonia. Dutch broker ING advised clients on Friday to avoid Thai assets altogether.

The health of the king, Thailand's single unifying figure during a long series of military coups and constitutional experiments, is followed closely in financial markets.

Strict lese majeste laws in Thailand make comment on royal matters risky. But the king's disappearance from public view has raised concern in largely Buddhist Thailand where many of his subjects regard him as almost divine.

(Reporting by Martin Petty; Editing by Paul Tait)