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Has the climate in San Cristóbal de las Casas changed?
San Cristóbal de las Casas has warmed about 2.3°F between 1998 and 2020.
About 1.3°F per decade, measured from San Cristóbal de las Casas's official daily weather records, 1998–2020. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.
What has actually changed
Each card compares the 1970s (the first ten years of the record) with recent years (the last ten) — the same span the headline and the chart use.
San Cristóbal de las Casas's temperature, year by year
Average temperature for each year from 1998 to 2020.
Each bar is one year. Most recent years sit above the older ones. Some recent years still came in cool — warming is a slope, not a straight climb.
When in the year the change shows up
How much warmer each month is now than in the 1970s. Useful if you garden or care about a particular season — otherwise the headline above already has the answer.
July has warmed the most — about 2.5°F. The warming runs across the whole year, not just one season.
Methodology & sources
Temperature — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at La Cabaña, about 2 km from the city centre.