- Warning valid below 800 m a.s.l. - Possible impacts: Significant risk of circulatory problems and physical discomfort. - Recommendations for action: Drink at least 1.5 litres per day, preferably unsweetened and non-alcoholic drinks. Avoid physical exertion at the hottest time of day. Do not leave people or animals in parked cars. - Highest temperatures and humidity: 31 - 36 °C, 30 - 45 % - Lowest night temperatures: 16 - 21 °C - Peak phase of the event: Thu 12 - Fri 20 - Temporary mitigation: due to thunderstorms on, Mon 10.08.2026