Besides the main island, the bailiwick includes other islets and reefs with no permanent population: Les Écréhous, Les Minquiers, Les Pierres de Lecq, Les Dirouilles.
The climate in the island is temperate, with mild winters and cool summers. The terrain is generally low-lying on the south coast, with some rocky headlands, rising gradually to rugged cliffs along the north coast. On the west coast there are sand dunes. Small valleys run north to south across the island. Very large tidal variation exposes large expanses of sand and rock to the southeast at low tide.
The lowest point in the island is the Atlantic Ocean, and the highest is Les Platons, at 143 metres.
