The hottest temperature to ever be recorded in Europe was 48.8C in Syracuse, Sicily, in July of 2021 (see link below). The previous record is from 1977.

If the record is broken I will resolve this question YES as soon as there are credible news reports this happened, as "official" confirmation could take years to happen (the previous record was only officially verified this year https://wmo.int/news/media-centre/wmo-confirms-verification-of-new-continental-european-temperature-record)

I will define "summer" as the period from June to August.