Weather & water
There are two weather stations operated by Metiomedia nearby - one on the island of Amrum, and one on the Hallig island Gröde. These stations probably provide the most accurate predictions for the region for the next four days: Amrum station | Gröde station
Tides, current water temperature, forecasts, etc.
Do you want to know when the tide is coming in, when the sun will rise in the morning or how warm the water will be tomorrow? The Bundesamt für Seeschifffahrt und Hydrographie (Federal Maritime and Hydrographic Agency) has the answers: current data for Föhr