HRS §521-22
How long a rental agreement can last
A landlord and tenant can choose any length for a rental agreement if they put it in writing. If they do not agree in writing, the tenancy is month to month, or week to week for boarders.
landlordstenants
The statute, as written — Term of rental agreement
The landlord and tenant may agree in writing to any period as the term of the rental agreement. In the absence of such agreement, the tenancy shall be month to month or, in the case of boarders, week to week.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.