About 0.0°F per decade, measured from Concepción's official daily weather records, 1974–2020. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.
Is that a lot? Concepción's warming is broadly in line with other cities in Chile — neither unusually fast nor unusually slow.
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
2 fewer nights
1970s
6 / yr
→
Recent
4 / yr
Milder winters — fewer frosts
Average temperature
about the same
1970s
55.4°F
→
Recent
55.3°F
Year-round temperature has barely moved
Hot days above 90°F
about the same
1970s
0 / yr
→
Recent
0 / yr
About the same number of heat days
Rainy days
19 more days
1970s
65 / yr
→
Recent
84 / yr
Wetter on average
Concepción's temperature, year by year
Average temperature for each year from 1974 to 2020.
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.
Methodology & sources
Temperature — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at Carrielsuraeropuertoconcepcion, about 5 km from the city centre.