The current government was formed at the start of August after the previous cabinet resigned in April, just three months after being sworn in.
That came amid growing disputes between that cabinet and opposition MPs, who had won nearly half the seats in the legislature during the previous election in December 2020.
The opposition has regularly accused ministers from the royal family of mismanagement and corruption.
Crown Prince Mishal Al-Ahmad Al-Jaber Al-Sabah dissolved the assembly in June after opposition lawmakers staged an eight-day strike in the legislature.
An official decree, reported by the KUNA news agency, said nominations were now open for candidates to register ahead of the September vote.