The area around Necochea was first charted by Jesuit clergymen José Cardiel and Thomas Falkner, who reached the mouth of the Quequén Grande River in 1748. Necochea itself was established as a defensive outpost against Malón raids on October 12, 1881, by National Guard commander Ángel Murga. The new settlement was named in honor of General Mariano Necochea, a military commander during Argentine War of Independence. Founded on a seaside estate owned by Eustoquio Díaz Vélez, jr., the latter's father, General Eustoquio Díaz Vélez, had likewise played an important role during the struggle. A Buenos Aires Great Southern Railway station was opened in 1894, and the Díaz Vélez family established the Villa Díaz Vélez resort in 1902. The neighboring communities were incorporated into the town of Necochea in 1911. A suspension bridge made Necochea accessible to motorists; inaugurated in 1929, the new bridge was named after President Hipólito Yrigoyen and was one of two identical suspension bridges in Argentina. A tram service operated in the town between 1913 and 1940. The inaugural of Port Quequén in 1922 made the area a leading railhead for the agriculture of Argentina; the port handled a million tons of freight by 1954 and would grow to over 3 million tons by 1991. Necochea became an important domestic tourism destination in Argentina during the 20th century, and the number of registered hotel rooms surpassed 50,000 by 2011; occupation by then exceeded 95% during the summer high season. Its municipal beaches grew to, reaching up to in depth. The 640 hectare Miguel Lillo Park, established in 1979, is the only public maritime forestnature reserve in Argentina. The park is also known for its swan lake, tourist railway, and the Regional Historical Museum housed since 1981 in the Spanish Colonial Revival house originally belonging to the Díaz Vélez estancia. Other local landmarks and attractions include seashore grottoes ; the Parish of Our Lady of Lourdes ; the Necochea Golf Club ; the casino ; the Fishermen's Pier ; the Quequén Grande River rapids; and Quequén itself, which features two breakwaters, a lighthouse, and a South American sea lion reserve. Some of the most popular recurring events in Necochea are the National Festival of Children's Shows, held since 1962 at Miguel Lillo Park on each Epiphany Day ; and the Festival of Cultures, celebrating the contributions of the numerous immigrant communities and their descendants to both Necochea and Argentina. The festival, held at the end of January, includes stands representing the immigrant cultures common to much of Argentina, as well as Chileans in the recent years.
Climate
Under the Köppen climate classification Necochea has a very warm oceanic climate with warm to hot summers and mild winters, with rainfall being spread over the year. The somewhat cool summer nights and the rainfall spread prevents it from being part of the various subtropical ranges. January means are around and the winter months are around, the latter being a more typical oceanic value.
