Claude Monet was born on 14 November 1840 on the 5th floor of 45 rue Laffitte, in the 9th arrondissement of Paris. He was the second son of Claude Adolphe Monet and Louise Justine Aubrée Monet, both of them second-generation Parisians. On 20 May 1841, he was baptized in the local parish church, Notre-Dame-de-Lorette, as Oscar-Claude, but his parents called him simply Oscar. In 1845, his family moved to Le Havre in Normandy. His father wanted him to go into the family grocery business, but Monet wanted to become an artist. His mother was a singer.
On 1 April 1851, Monet entered Le Havre secondary school of the arts. Locals knew him well for his charcoal caricatures, which he would sell for ten to twenty francs. Monet also undertook his first drawing lessons from Jacques-François Ochard, a former student of Jacques-Louis David. On the beaches of Normandy in about 1856/1857, he met fellow artist Eugène Boudin, who became his mentor and taught him to use oil paints. Boudin taught Monet "en plein air" (outdoor) techniques for painting. Both received the influence of Johan Barthold Jongkind.
When Monet traveled to Paris to visit the Louvre, he witnessed painters copying from the old masters. Having brought his paints and other tools with him, he would instead go and sit by a window and paint what he saw. Monet was in Paris for several years and met other young painters who would become friends and fellow impressionists; among them was Édouard Manet.
In June 1861, Monet joined the First Regiment of African Light Cavalry in Algeria for a seven-year commitment, but, two years later, after he had contracted typhoid fever, his aunt intervened to get him out of the army if he agreed to complete an art course at an art school. It is possible that the Dutch painter Johan Barthold Jongkind, whom Monet knew, may have prompted his aunt on this matter. Disillusioned with the traditional art taught at art schools, in 1862 Monet became a student of Charles Gleyre in Paris, where he met Pierre-Auguste Renoir, Frédéric Bazille andAlfred Sisley. Together they shared new approaches to art, painting the effects of light en plein air with broken color and rapid brushstrokes, in what later came to be known as Impressionism.