Rio Maior (Portuguese pronunciation: [ˈʁi.u mɐˈjɔɾ] (listen)) is a municipality in the Santarém District in Portugal. The population in 2011 was 21,192, in an area of 272.76 km².The present mayor is Isaura Morais of the Social Democratic Party (PSD), the first woman to be elected mayor in the municipality. The municipal holiday is November 6.
Administratively, the municipality is divided into ten civil parishes (freguesias):
Azambujeira e Malaqueijo
Marmeleira e Assentiz
Outeiro da Cortiçada e Arruda dos Pisões
São João da Ribeira e Ribeira de São João
Rio Maior has a Mediterranean climate with warm to hot, dry summers and mild, wet winters. Rio Maior registered a temperature of 44.9 °C (112.8 °F) on 4 August 2018 and −6.2 °C (20.8 °F) on January and February.
Duarte da Silva Marques (born 1983 in Rio Maior) a triathlete, competed at the 2008 Summer Olympics
Pedro Oliveira (born 1988 in Rio Maior) a backstroke and butterfly swimmer, participated in the 2008 & 2012 Summer Olympics
Miguel Carvalho (born 1994) a racewalker, took part in the 2016 Summer Olympics