@Pistoor-D Hello, The tide data provider for Windy is worldtides. So you can check it. In Cuxhaven according to this data provided with an accuracy of 10cm, the 6.2m high tide remains today at this level from 10:27 to 11:52 meaning a very small variation during this time frame. So it is difficult to determine the precise time of high tide when the displayed accuracy is 10 cm. Official data with an accuracy of 1cm will give you a better estimate of the time of high tide. But in addition to tide tables, it is wise to take into account atmospheric pressure and wind, which have a significant influence on the actual water level, more than few cm. And to keep a good keel clearance.