- Warning valid below 500 m a.s.l. - Possible impacts: Moderate risk of circulatory problems. - Recommendations for action: Drink (preferably unsweetened) liquids regularly and in sufficient quantities (at least 1.5 litres a day). Protect yourself from direct sunlight (stay in the shade, wear suitable clothing, a hat, sunglasses and sun cream). Avoid vigorous physical activity or compensate for salt loss during or after sport activities. Contact those around you who fall into the risk category and ensure that they are well and able to follow the existing recommendations. Do not leave people or animals unattended in cars. - Highest temperatures and humidity: 31 - 35 °C, 30 - 50 % - Lowest night temperatures: 18 - 21 °C