FX.co ★ Mexico’s 1st Half-Month Core CPI Jumps in September, Signaling Reignited Price Pressures

Mexico’s core consumer inflation picked up significantly in early September, underscoring a renewed build-up of underlying price pressures. The 1st half-month Core CPI rose to 0.17% in September 2026, more than doubling the previous reading of 0.08% recorded in August 2026.

The acceleration in core prices — which exclude volatile components and are closely watched as a gauge of persistent inflation trends — suggests that disinflation momentum may be losing strength. The latest figures, updated as of 24 September 2026, will likely draw attention from market participants assessing the future path of Mexican monetary policy and the central bank’s tolerance for resurgent inflation dynamics.

Investors and analysts will now focus on whether this uptick proves temporary or marks the start of a more sustained firming in core inflation, with upcoming data releases set to shape expectations for interest rates and the broader macroeconomic outlook in Mexico.