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Has the climate in San Andrés Tuxtla changed?

San Andrés Tuxtla has warmed about 6°F between 1977 and 2011.

About 1.9°F per decade, measured from San Andrés Tuxtla's official daily weather records, 1977–2011. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? San Andrés Tuxtla's climate has warmed faster than most other cities in Mexico.

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.

Freezing nights
about the same
1970s
0 / yr
Recent
0 / yr
Winters about as cold as before
Average temperature
+5.2°F
1970s
72.3°F
Recent
77.4°F
A steady upward drift
Hot days above 90°F
138 more days
1970s
35 / yr
Recent
173 / yr
More days of serious heat
Rainy days
20 fewer days
1970s
134 / yr
Recent
114 / yr
Drier on average

San Andrés Tuxtla's temperature, year by year

Average temperature for each year from 1977 to 2011.

70°72°74°76°78°80°1977: 73.8°F1979: 71.7°F1980: 72.3°F1981: 71.9°F1982: 72.1°F1983: 72.7°F1984: 71.2°F1985: 73.0°F1989: 71.7°F1990: 72.3°F1991: 73.2°F1992: 71.9°F1993: 73.2°F1994: 73.6°F1995: 73.0°F1996: 71.7°F1997: 72.3°F1998: 73.8°F1999: 71.9°F2000: 74.7°F2001: 76.8°F2002: 77.2°F2003: 77.2°F2004: 77.4°F2005: 78.5°F2006: 78.2°F2007: 78.6°F2008: 77.2°F2009: 77.3°F2010: 76.2°F2011: 76.7°Flong-term trend197719801990200020102011
a warmer-than-average year a cooler-than-average year

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.

In day-to-day terms, that long-term shift shows up as about 74 more days above 90°F compared with the 1970s.

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.

0.0°+0.5°+1.0°+1.5°+2.0°+2.5°+3.0°+3.5°January: +2.4°F+2.4JFebruary: +2.8°F+2.8FMarch: +2.4°F+2.4MApril: +3.2°F+3.2AMay: +2.5°F+2.5MJune: +2.9°F+2.9JJuly: +2.9°F+2.9JAugust: +2.9°F+2.9ASeptember: +2.8°F+2.8SOctober: +2.6°F+2.6ONovember: +2.0°F+2.0NDecember: +2.3°F+2.3D

April has warmed the most — about 3.2°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 Sihuapan, about 4 km from the city centre.

How we build these numbers →