This paper shows that despite today's most popular climate models indicating that sea levels are generally rising and accelerating and that the coastal management in Norway may face sea level rises from 16 to 116cm by the year 2100, all the local and global tide gauges and the satellite radar altimeter reconstruction of global mean sea level consistently show that there is no accelerating behaviour, with negative sea level rises for the specific of Norway because of the post-glacial rebound. This suggests the sea level rise of this century will very likely be the one from the past century.