In September 2018, the Consumer Prices Index (CPI) fell back by 0.2% over a month, after a 0.5% rebound in August. This downturn resulted from that, seasonal, in services prices (−1.5% after +0.3%). Contrariwise, manufactured product prices gathered pace (+1.3% after +1.1%) after the end of summer sales in August in the metropolitan area. Food prices were also more dynamic than in the previous month (+0.6% after +0.3%). Finally, energy prices rose by 0.9% over a month after a stability in August.