Oil prices were set to post their biggest monthly gains in more than a year on Monday, on expectations that Saudi Arabia will extend voluntary output cuts into September and tighten global supply.
Brent crude futures crept 34 cents higher to $85.33 a barrel by 0957 GMT, while U.S. West Texas Intermediate crude rose 54 cents to $81.12 a barrel.
The September Brent contract will expire on Monday. The more active October contract edged up 47 cents to $84.88 a barrel.
Brent and WTI settled on Friday at their highest levels since April, gaining for a fifth straight week, as tightening oil supplies globally and expectations of an end to U.S. interest rate hikes supported prices.
Both are on track to close July with their biggest monthly gains since January 2022.
Meanwhile, Saudi Arabia is expected to extend a voluntary oil output cut of 1 million barrels per day (bpd) for another month to include September.
