LONDON Oil prices dipped on Tuesday on worries of a slowing Chinese economy crimping demand and despite a growing consensus the US Federal Reserve could begin cutting its key interest rate as soon as September.

Brent futures were down 67 cents, or 0.8%, to US$84.18 a barrel by 0811 GMT, while US West Texas Intermediate (WTI) crude fell 72 cents, or 0.9%, to US$81.19.

The weaker Chinese economic data "cast some doubts on whether market participants are being overly optimistic" regarding China's oil demand outlook, IG market strategist Yeap Jun Rong wrote in an email.

The world's second-largest economy grew 4.7% in April-June, official data showed, its slowest rate since the first quarter of 2023 and missing a 5.1% forecast in a Reuters poll. It slowed from the previous quarter's 5.3% expansion, hamstrung by a protracted property downturn and job insecurity.

"Its 2Q GDP and retail sales figures had surprised on the downside by a significant margin, while anticipation for stronger stimulus measures at the Third Plenum may face the risk of disappointment," Yeap added, referring to a key economic leadership meeting in Beijing this week.

In the US, Fed chair Jerome Powell said on Monday the three US inflation readings over the second quarter of this year "add somewhat to confidence" that the pace of price increases is returning to the central bank's target in a sustainable fashion, remarks which market participants interpreted as indicating that a turn to interest rate cuts may not be far off.

Lower interest rates decrease the cost of borrowing, which can boost economic activity and oil demand.

Some analysts cautioned about being overly bullish as expected weakness in some macroeconomic data from the US could still indirectly hurt oil demand in the near term.

"Macro factors are not in favour of higher oil prices in the near term (capped below US$85/barrel for WTI crude) due to the prospect of weaker US retail sales for June that are due later today," OANDA senior market analyst Kelvin Wong wrote in an email.

  - Reuters