The trace of Satun province's history did not exist prior and during the Ayutthaya era. It is assumed that the city of Satun did not exist in that era, resumable only small villages scattered along the coastal plain.
In the early Rattanakosin era, Satun is only one district in the city of Kedah, therefore, the history of Satun province is related to the background of the city of Kedah. As appeared in the royal Rattanakosin chronicle of King Rama II: "According to the existing contents, it appears that during that era, the city of Kedah seemed to be divided into two groups; those of Chao Praya Sai Pangae's people and those of Praya Apaianurat, who might have bowed to the city of Nakhon Si Thammarat. Especially when Praya Apaianurat took the position of governing the city of Satun, where its boarders are connected to Nakhon Si Thammarat, those people of Satun might have been more connected with those of Nakhon Si Thammarat than of city of Kedah, but Praya Apaianurat governed the city of Satun for only 2 years before he passed away. The record of the successor for his position of governing the city of Satun was nowhere to be found, however, considered the followed occurrences, the royal family of Praya Apaianurat (Passanu) might have governed the city of Satun and obeyed with intimacy with the city of Nakhon Si Thammarat, just like in the era of Praya Apaianurat, or even more."