He attended local Monaco public schools, until he was uprooted when he, his mother and sisters joined the circus. He has also studied in Switzerland (briefly), France and the USA. He is fluent in several languages, including French, lang Monégasque and Italian. During the early 2000s, along with his mother and two sisters, he traveled with the Kline Circus for a few years.
He rarely appears in public on behalf of the Monégasque Princely Family. However, in 2014, he made very few brief appearances including the Star Team for children and World Stars football match during the Monaco Grand Prix Week and opening of the Monaco Yacht Club in June with his entire family (I mean entire...99% of them were there!). In 2005, along with his little sister, he appeared on the reality television show, La Ferme Célébrités. In 2013, during the Grand Prix Week, he played in a charity football match, and at the end of the summer, he alongside his mother and younger sister appeared at the FIGHT AIDS Monaco Gala.
Other recent events he attended were: his mother and sister's circus festivals, his uncle’s 2005 Enthronement ceremony, and July 2011 wedding to his new aunt, Princess Charlene, appearing on the balcony after the civil service, arriving with his mother, sisters, aunt and younger cousin at the religious service, and attending the JM Jarre concert after the civil service, and the Eagles Concert prior to the festivities.
Louis, along with little sister Pauline (and most of the rest of the Grimaldis), is a major fan of Monaco’s home football team, AS Monaco FC. When Louis was a youngster, Prince Albert joked that they may have to change the name of the Monégasque stadium to Stade Louis III from Stade Louis II, in his honor.
He was originally to be named something else, but at last minute, he was named Louis for his maternal great-grandfather, Louis II. Presently, before the birth of his twin cousins next month, he is 8th in line for the Monegasque throne after his aunt, four cousins, and his mother, when they are born, he will moved to 10th place in line for succession as they will come before him. Louis does not bear the title HSH Prince of Monaco at his parents' request to give him a semi-normal life, given how far down the line of succession he is.