Prices are seen decreasing faster for energy (-2.8 percent from -2.5 percent) while those of unprocessed food should increase 0.2 percent, easing from a 1 percent.
Core consumer prices, which excludes prices of energy and unprocessed food products are expected to edge down 0.1 percent from a year earlier, compared to a 0.6 percent gain in the prior month.
On a monthly basis, consumer prices are set to slump 1.3 percent, after showing no growth in June.
Harmonized consumer prices likely declined 0.7 percent year-on-year, after rising 0.7 percent in June and are seen dropping 1.7 percent month-over-month after a 0.4 percent gain in June.