Indonesia's annual inflation inched up in August, remaining within the central bank's target range despite rice prices rising at the fastest pace in over a decade, statistics bureau data showed on Friday.

The Consumer Price Index rose 3.27% in August, below analysts' expectations of 3.33% in a Reuters poll, from 3.08% in July. That was within Bank Indonesia's 2023 inflation target range of 2% to 4%.

The annual core inflation, which strips out government-controlled prices and volatile food prices, eased in August to 2.18% from 2.43% in the previous month. The poll had expected a 2.30% rate for August.

A deeper look at the data showed that while headline inflation only rose modestly, annual rice inflation accelerated to 13.76% in August, the highest since June 2012.

The increase was even more prominent at rice milling and wholesale levels, which were up 20.27% and 16.24% year-on-year, respectively, last month.

Rice traders have complained of tight supply as paddy fields have been hit by drought linked to the El Niño weather pattern.

Indonesia has approved an import quota of 2.3 million metric tons to help boost rice supplies at home.

On a monthly basis, consumer prices fell 0.02% in August, with prices of foodstuffs like shallot, chicken, eggs and string beans declining.

Myrdal Gunarto, economist with Maybank Indonesia, said he expected a limited increase in rice prices going forward due to planned imports from Southeast Asian countries, predicting headline inflation would remain manageable.

His end-2023 inflation prediction was 3%, matching the central bank's most recent forecast.

Irman Faiz, economist with Bank Danamon, said headline inflation would ease further from next month due to a high base effect from the government's fuel price hike in September of 2022.

As for rice inflation, Irman said: "As a staple, the (rice) inflation will affect purchasing power. But generally, food commodities are showing a moderation trend that is offsetting (rising) rice prices' impact."

(Reporting by Stefanno Sulaiman, Gayatri Suroyo and Fransiska Nangoy; Editing by Kanupriya Kapoor)