Overview

• Saturday delivered widespread sunshine and 27–32°C in many regions, with the first clouds, showers and thunderstorms edging into the northwest by evening, according to the DWD.
• From Sunday, forecasters expect a marked turn to rain, showers and isolated thunderstorms, with a risk of heavy or persistent rain in parts of the country.
• In the southwest, DWD guidance and regional forecasts highlight significant totals in 24 hours, locally on the order of 30–50 l/m², and elevated flood risk where bands stall.
• Temperatures tumble to below 20°C nationwide at the start of the week, with the southwest seeing roughly 10–15°C and continued rain especially in the south and southeast.
• The warm window buoyed outdoor plans such as Oktoberfest’s opening day and the Berlin Marathon, but organizers and visitors are being advised to prepare for wetter, cooler conditions and to monitor DWD updates, with some private forecasters even flagging late-week ground frost potential in parts of central and southern Germany.