Isla and Eilidh Noble heard cries for help while swimming in the Waters of Philorth Beach in August of that year.
Realising the man, who had his son on his shoulders, was in trouble, Isla headed straight into the water chased by Eilidh who gave her their inflatable lilo.
Using the lilo Isla helped them to shore, while Eilidh called the emergency services.
The girls were assisted by Keith Gray and nurse Sophie Ross, and their actions were hailed for ensuring the man from Newcastle, known as Phil, and his son, thought to be four at the time, survived the incident.
The teenagers have previously received awards for their act of heroism from the Royal Humane Society in December 2019, and in the Sunday Mail Young Scot Awards last August.
Now they have now been recognised by the First Minister, Nicola Sturgeon for ‘commendable bravery’.
The Fraserburgh Academy pupils were recently nominated by Police Scotland for consideration of the First Minister's [email protected] 2020 award and were chosen as winners.
Both girls received certificates and the honour of also being issued with St Andrew's Medals.