It lies in the eastern part of the island, on the RN3 road, south west of Saint-Benoît and northeast of the Col de Bellevue. It is known for its nearby forest and for the Biberon Falls. It lies close to the slopes of the Piton des Songes.
La Plaine-des-Palmistes has an oceanic climate (Köppen climate classificationCfb). The average annual temperature in La Plaine-des-Palmistes is 16.9 °C (62.4 °F). The average annual rainfall is 4,302.4 mm (169.39 in) with February as the wettest month. The temperatures are highest on average in February, at around 20.2 °C (68.4 °F), and lowest in August, at around 13.8 °C (56.8 °F). The highest temperature ever recorded in La Plaine-des-Palmistes was 30.5 °C (86.9 °F) on 11 March 2015; the coldest temperature ever recorded was 2.8 °C (37.0 °F) on 25 August 1963.
Climate data for La Plaine-des-Palmistes (1991–2020 averages, extremes 1961–present)
^"Plaine-des-Palmistes (974)"(PDF). Fiche Climatologique: Statistiques 1991–2020 et records (in French). Meteo France. Archived from the original(PDF) on 20 October 2019. Retrieved 1 September 2022.