A senior Nationals minister says the impact of climate change on farming is now undeniable, conceding his views differ from "many of my colleagues".

NSW Primary Industries Minister Niall Blair said the "sands were shifting" on the climate change debate as he prepared for a Council of Australian Governments meeting of agriculture ministers in Adelaide on Friday.

Niall Blair, the NSW Primary Industries Minister, says climate change's impact on his state's agriculture is undeniable. Credit:Mark Jesser

"We've got to start showing that we take climate change and its impacts on the agricultural sector seriously," said Mr Blair, the NSW Nationals deputy leader.

The NSW Nationals - and their state Liberal counterparts - have been attempting to distance themselves from some of the federal colleagues on climate change in the lead up to the March election. Senior party figures such as Barnaby Joyce, the former federal Nationals leader and agriculture minister, have been outspoken on the issue, demanding Australia ditch its commitment to the Paris climate agreement.