May 26 – The show trial against Griffenfeld ends with his conviction of all charges against him for simony, bribery, oath-breaking, malversation and lèse-majestéand and treason. He is sentenced to loss of honour, life and estate.
June 1 – The naval Battle of Öland results in a decisive Danish-Dutch victory against a Swedish fleet and Danish naval supremacy that was upheld throughout the war.
June 6 – Griffenfeld is pardoned on the scaffold, at the very moment when the axe was about to descend, and his sentence is commuted to lifelong imprisonment.
June 29 – A Danish fleet transports 14,500 soldiers across the Sound, landing them just south of Helsingborg, and Scania becomes the main battle ground for the remainder of the war.