The old Dutch record for december was 16.7C set on 4 Dec 1953 so the 17.6C reading does break the old record. Furthermore, the old highest minimum for December of 13.1C from last years 30th was broken with 13.4C in Maastricht en 13.2C in Ell.

— Rick Meulenbeld (@meulenbeld_rick) January 1, 2023