Records broken for coldest May morning in eight areas across NSW, BoM confirms, page-7

Yeh probably,

Lets play bingo with the GBR data.

Or lets play bingo with North polar region records but the rest of the world is normal.
Lets call foul and state that the MWP was a localised issue only,

Yeh Probably..

Probably sums it up perfectly Bennyho