During the British period of Mauritius, France administered the island as a dependency of the region of Réunion and built infrastructure without British protest. France and Mauritius have been negotiating for years in regard to the possible establishment of a condominium over the island. In 2010, Mauritius and France reached an agreement on the co-management of Tromelin, without prejudice to the sovereignty of Mauritius over Tromelin. The French claim to sovereignty dates from 29 November 1776, the date that the ship Dauphine arrived. The Mauritian claim to sovereignty is based on the fact that the island must have been ceded to United Kingdom by the treaty of Paris in 1814 and should not continue to be administered by France as a dependency of Réunion. The United Nations never recognized the Mauritian sovereignty over Tromelin. In 1954, France constructed a meteorological station and a landing strip on the island. It is a matter of dispute whether the building agreement transferred sovereignty of Tromelin from one to the other, and Mauritius claims the island as part of its territory, on the grounds that France did not retain its sovereignty over island in 1814, which was de facto part of the colony of Mauritius at the time of independence. Indeed, as early as 1959, even before independence, Mauritius informed the World Meteorological Organization that it considered Tromelin to be part of its territory. A co-management treaty was reached by France and Mauritius in 2010, but has not been ratified. Tromelin has an Exclusive Economic Zone (EEZ) of , contiguous with that of Réunion. The island's weather station, which warns of cyclones, is still operated by France and is staffed by meteorologists from Réunion. Climate Tromelin Island has a tropical savanna climate (Köppen climate classification Aw). The average annual temperature in Tromelin is . The average annual rainfall is with February as the wettest month. The temperatures are highest on average in February, at around , and lowest in August, at around . The highest temperature ever recorded in Tromelin was on 1 January 1983; the coldest temperature ever recorded was on 12 July 1964. References External links Uninhabited islands of Mauritius Uninhabited islands of Seychelles Uninhabited islands of France Islands of the French Southern and Antarctic Lands Disputed islands of Seychelles Disputed territories in Africa Territorial disputes of France Territorial disputes of Mauritius France–Mauritius relations Important Bird Areas of the Scattered Islands in