Recent sea level rise
- During the last 50 years, the sea level of Helgoland has risen about 15 cm on average.
- The current annual sea level at Helgoland is 505 cm above PN. Compared to the last 50 years, the current annual sea level is among the highest 25%.
- The latest 19-year mean sea level of Helgoland (2003-2021) is among the highest 5% since the beginning of data availability.