it's 35.0C and belongs to Chania itself on 5 November 1990.But since it's the end of November we should look at December records as reference: 30.9C at Cefalu Italy in Dec 1989 and for Greece 29.6C at Vryses/Chania and Herklion in Dec 2010. So 31.1C on 29 Nov is extraordinary.

— Extreme Temperatures Around The World (@extremetemps) November 29, 2021