London Brent crude for January delivery LCOc1 was trading up 4 cents at $44.79 a barrel by 06:30 GMT, after settling down $1.09 on Friday. The benchmark on Friday hit its lowest since August 11 at $44.19, as reported by Reuters.
NYMEX crude for December delivery CLc1 was down 4 cents at $43.37 a barrel. The contract closed down $1.25 on Friday after dropping as low as $43.03, its weakest since September 20.
The dollar rose to a nine-month high against other currencies on Monday, pressuring oil prices.
"Overall the market is seen heading lower because of a strong dollar," said Kaname Gokon at brokerage Okato Shoji in Tokyo.
The Organization of the Petroleum Exporting Countries (OPEC) said on Friday that its output rose to a record 33.64 million barrels per day (bpd) in October, up 240,000 bpd from the previous month.
Read alsoReuters: Oil down 2 pct on OPEC glut worries; U.S. rigs up by twoOPEC plans to cut or freeze output, but investors are skeptical such a deal will be reached during the cartel's November 30 meeting and are concerned that whatever agreement reached would not be effective.
However, OPEC's plans, coupled with Donald Trump's victory in the presidential election, have spurred production activity in the U.S. shale patch, as cautiously confident shale producers redeploy cash, rigs and workers.
BMI Research said in a note that the most likely scenario at the OPEC meeting will be no deal, as the victory of Republican Trump - a strong advocate of U.S. energy independence - has altered its expectations.
Still, Saudi Energy Minister Khalid al-Falih has said it was imperative for OPEC members to reach a consensus on activating a deal made in September in Algiers to cut oil production, according to Algeria's state news agency on Sunday.
Iran opened three oilfields with a total production of more than 220,000 bpd on Sunday, as the country continues to ramp up its production.
Weekly Baker Hughes data showed that active U.S. drilling rigs rose by two, an increase in 21 out of the last 24 weeks.
China's daily crude oil production in October fell to the lowest in more than seven years, while crude oil refinery throughput in October rose to the highest since at least 2011, data from the statistics bureau showed.