On Friday 14 August 2026, Luxembourg's national weather portal, MeteoLux, further extended its weather warnings for high temperatures in Luxembourg.
An orange weather warning (indicating "danger") is now in place for the south of Luxembourg until 23:59 on Saturday 15 August 2026. A yellow weather warning (indicating "potential danger") will remain in place for the north until the same time.
Before this recent update, the warnings been due to end at 06:59 on Saturday.
According to MeteoLux, moderate heat stress is expected under the yellow warning, with fatigue and heat exhaustion possible during prolonged exposure or physical activity. Under the orange warning, high heat stress is expected, with persistently high perceived temperatures for at least two consecutive days. Heat exhaustion is likely, while heat stroke is possible during prolonged exposure or physical activity.
