Euronext wheat futures extended a rally to record highs early on Monday as rain disruption to Australia's harvest and uncertainty over Russian exports kept attention on global supply risks.

December wheat on Euronext climbed as much as 8.50 euros, or 2.8%, to 308.25 euros ($347.74), an record Euronext price and surpassing the previous peak of 303.25 set on Friday.

March BL2H2 , the most active contract on Euronext, hit a record for a second-month position BL2c2 at 305.25 euros. By 1022 GMT it was up 2.3% at 303.75 euros.

The early jump on Euronext was supported by a nine-year high for Chicago wheat Wv1 in overnight trading. GRA/

"Traders are concerned about the quality of the wheat in Australia due to too wet weather and rumours of export quotas in Russia," consultancy Agritel said in a note.

Concern over export availability in the Black Sea region was also being fuelled by renewed tensions between Ukraine and Russia, traders added. ($1 = 0.8864 euros)

(Reporting by Gus Trompiz in Paris and Michael Hogan in Hamburg Editing by David Goodman )