0142 GMT - The Indonesian rupiah's stability could give Bank Indonesia room to keep its policy rate unchanged in September, CIMB economists Joel Cheung and Michelle Chia say in a note. However, external pressures and rising inflation risks are likely to keep the central bank cautious. A weaker current account position and expectations for higher U.S. interest rates could put further pressure on the rupiah, they say. Higher crude prices, El Nino related supply disruptions, wildfires and volcanic ash are also expected to push inflation higher, they reckon. CIMB expects 2026 and 2027 inflation to be at 3.5% and 3.2%, respectively, and forecasts one 25bp rate increase in 4Q.