The present report was commissioned by the Conference of Rhine Ministers in 2020 to update the ICPR climate change adaptation strategy by 2025. The focus here is on the discharge regime (high and low water) and the water temperature. As a result, the expert group ‘Water temperatures’ (EG STEMP) has been given the task of updating the ICPR technical report no. 214 on the future development of water temperatures in the Rhine by 2025.