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Inflation rises to 3.45% in September on tomatoes (+30%) and onions (+23%); prices in Cancún rose just 0.07% for the month

INEGI reported consumer prices rose 0.42% in September. Cancún posted one of the smallest monthly increases in the country.

By Miguel Díaz Miró · Responsible editor ·
Tomatoes and onions for sale at a market

Mexico's annual inflation rose to 3.45% in September 2026, according to the National Consumer Price Index (INPC) released by INEGI on October 8. Prices rose 0.42% during the month, driven mainly by tomatoes, up 30.25%, and onions, up 23%.

In Cancún, prices rose just 0.07% for the month, well below the national average, according to INEGI's city-level table. Chetumal posted a 0.16% increase. The highest monthly increase was in Tlaxcala (0.84%) and the lowest in La Paz, Baja California Sur (0.01%).

What went up and what went down

According to INEGI, the items that pushed prices up the most in September were:

  • Tomatoes: +30.25%
  • Onions: +23.00%
  • LP gas for homes: +3.14%
  • Chicken: +1.78%
  • Elementary school tuition: +6.00%
  • Air travel: +6.59%

On the other side, prices fell for potatoes and other tubers (-13.92%), professional services (-16.44%) and internet, phone and pay-TV bundles (-2.06%).

Core inflation eases

Core inflation — which excludes the most volatile items such as fruits, vegetables and energy, and is used to gauge the underlying trend — stood at 3.75% year over year, with a 0.20% monthly increase. Non-core inflation was 2.45% annually, but rose 1.20% for the month, driven by fruits and vegetables (+4.40%).

For comparison, annual inflation in September 2025 was 3.76%, so it is lower than a year ago, although it remains above the Bank of Mexico's permanent 3% target.

What it means for your wallet in Cancún

Even though prices in Cancún barely moved this month, tomatoes, onions and LP gas are frequent purchases in any household, so they are worth watching:

  • Compare before you buy. Profeco, Mexico's consumer protection agency, publishes prices of basic goods by city through its Quién es Quién en los Precios program, on its website and app.
  • Swap when a price spikes. With potatoes getting cheaper and tomatoes getting pricier, adjusting the weekly menu can help keep spending in check.
  • LP gas: check the current weekly maximum price for your region before paying for a tank or a stationary refill; if you are overcharged, you can file a complaint with Profeco.

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