Langeoog is a car-free East Frisian island with a 14 km sandy beach and East Frisia's highest dune (Melkhörn, 19 m). Maritime stimulant climate, summers around 17 °C, mild winters, plenty of wind. Water 17–19 °C in midsummer. Relatively low rainfall, around 750 mm per year. Compare Langeoog's weather data.