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Has the climate in Sahuayo de Morelos changed?

Sahuayo de Morelos has warmed about 4.9°F between 1973 and 1995.

About 2.9°F per decade, measured from Sahuayo de Morelos's official daily weather records, 1973–1995. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Sahuayo de Morelos'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
12 fewer nights
1970s
12 / yr
Recent
0 / yr
Milder winters — fewer frosts
Average temperature
+4.4°F
1970s
62.7°F
Recent
67.1°F
A steady upward drift
Hot days above 90°F
16 more days
1970s
6 / yr
Recent
22 / yr
More days of serious heat
Rainy days
about the same
1970s
81 / yr
Recent
80 / yr
Rainfall pattern about the same

Sahuayo de Morelos's temperature, year by year

Average temperature for each year from 1973 to 1995.

60°62°64°66°68°1973: 61.1°F1974: 62.2°F1975: 63.4°F1976: 62.8°F1977: 64.2°F1978: 65.0°F1979: 61.4°F1980: 61.4°F1981: 66.0°F1982: 68.0°F1983: 66.6°F1984: 66.6°F1985: 66.8°F1986: 67.0°F1987: 67.2°F1994: 67.4°F1995: 67.1°Flong-term trend197319801995
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 3 fewer freezing nights a year and about 4 fewer 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°+4.0°+4.5°January: +3.7°F+3.7JFebruary: +4.4°F+4.4FMarch: +2.3°F+2.3MApril: +2.4°F+2.4AMay: +3.4°F+3.4MJune: +2.4°F+2.4JJuly: +1.6°F+1.6JAugust: +1.1°F+1.1ASeptember: +1.0°F+1.0SOctober: +2.0°F+2.0ONovember: +1.7°F+1.7NDecember: +3.2°F+3.2D

February has warmed the most — about 4.4°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 Presa Jaripo, about 16 km from the city centre.

How we build these numbers →