Record-high temperatures in Belgium as heatwave hits Europe People in Belgium try to keep cool as record high temperatures were reached on Wednesday with the worst still to come on Thursday. The "red code" heatwave was triggered for the very first time in the country. An all-time high of 39.9 degrees Celsius (104 Fahrenheit) was registered at the Kleine-Brogel military base, beating a record that dated back to June 1947. IMAGES