Consumer Price Index Development in Riau Province, May 2026

In May 2026, Riau Province recorded a year-on-year (y-o-y) inflation rate of 3.95 percent, with a Consumer Price Index (CPI) of 112.88. The highest annual inflation was observed in Tembilahan, which registered a y-o-y inflation rate of 4.43 percent and a CPI of 113.49. Meanwhile, the lowest annual inflation was recorded in Dumai City, where the y-o-y inflation rate stood at 3.71 percent with a CPI of 112.79.

The y-o-y inflation was primarily driven by price increases across nine expenditure groups. The highest increase was recorded in the personal care and other services group, which rose by 11.04 percent, followed by the food, beverages, and tobacco group at 6.03 percent; education at 5.08 percent; health at 3.55 percent; transportation at 3.32 percent; restaurants and food services at 2.64 percent; recreation, sports, and culture at 1.03 percent; housing, water, electricity, and household fuels at 0.99 percent; and information, communication, and financial services at 0.93 percent. Conversely, two expenditure groups experienced deflation, namely household furnishings, equipment, and routine household maintenance, which declined by 0.68 percent, and clothing and footwear, which fell by 0.33 percent.

On a month-to-month (m-o-m) basis, Riau Province experienced an inflation rate of 0.76 percent in May 2026. Meanwhile, on a year-to-date (y-t-d) basis, the province recorded cumulative inflation of 0.61 percent.