The Sun’s irradiance varies on different time scales. For decadal predictability, the longer time scales of several years to decades are most important. Here, the 11-year solar cycle sticks out. While the surface influence of the 11-year solar cycle has been investigated in a plethora of studies, its existence has been questioned recently, and its role for decadal climate predictability is only beginning to be investigated. Likewise, in the decadal prediction community, solar variability plays a minor role. In this presentation, I will therefore provide an overview of 1) the solar surface signal, 2) the concepts of decadal predictions, and 3) the Sun’s role for decadal climate predictability.