The summer will be remembered for its three heat waves, the first at the end of June, the second around 25 July and the third at the end of August. As a result, Luxembourg’s summer broke records with the hottest temperature recorded at 40.8°C in Steinsel in July. Indeed, the mercury tipped the 40°C mark at four weather stations on 25 July.
The other reason many will remember the summer of 2019 was the category F2 tornado, which struck in the communes of Pétange and Kaerjeng, in the south of Luxembourg, on 9 August. It caused considerable damage and, at the time of writing, recovery efforts and repairs were still ongoing. This extreme weather phenomenon was caused by high temperatures creating unstable air masses in which thunderstorms developed. It also led to hailstorms in the northwest of Luxembourg on 19 June.
Perhaps less memorable, except for those with a vested interest in outdoor business ventures like the Schueberfouer, was the shortage of rainfall during the summer of 2019. The biggest shortfall was recorded in Arsdorf where rainfall was down -102mm. Overall precipitation levels were below the historic long-term averages throughout the country, Asta stated.
Rainfall shortages led to a drying out of soil. On 4 September agriculture minister Romain Schneider is expected to take stock of the grain harvest with sector representatives.
This below-average precipitation in connection with the high temperatures, especially during the heat waves, led to a strong dehydration of the soils.