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Has the climate in Karlsruhe changed?

Karlsruhe has warmed about 3.3°F between 1971 and 2008.

About 0.9°F per decade, measured from Karlsruhe's official daily weather records, 1971–2008. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Karlsruhe's climate has warmed faster than most other cities in Germany.

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
8 fewer nights
1970s
68 / yr
Recent
60 / yr
Milder winters — fewer frosts
Average temperature
+2.2°F
1970s
51.3°F
Recent
53.5°F
A steady upward drift
Hot days above 90°F
8 more days
1970s
4 / yr
Recent
12 / yr
More days of serious heat
Rainy days
4 fewer days
1970s
162 / yr
Recent
158 / yr
Drier on average

Karlsruhe's temperature, year by year

Average temperature for each year from 1971 to 2008.

47°49°51°53°55°57°1971: 50.8°F1972: 49.5°F1973: 51.4°F1974: 52.8°F1975: 52.3°F1976: 52.9°F1977: 52.7°F1978: 50.8°F1979: 50.8°F1980: 50.0°F1981: 50.5°F1982: 51.1°F1983: 51.7°F1984: 49.7°F1985: 49.0°F1986: 50.0°F1987: 49.3°F1988: 51.9°F1989: 53.3°F1990: 53.8°F1991: 52.1°F1992: 53.3°F1993: 52.2°F1994: 54.4°F1995: 52.6°F1996: 50.0°F1997: 52.6°F1998: 52.9°F1999: 53.5°F2000: 54.3°F2001: 52.8°F2002: 53.4°F2003: 53.8°F2004: 52.4°F2005: 52.7°F2006: 53.6°F2007: 53.7°F2008: 55.9°Flong-term trend19711980199020002008
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 5 fewer freezing nights a year and about 5 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°January: +1.3°F+1.3JFebruary: +1.6°F+1.6FMarch: +0.9°F+0.9MApril: +1.8°F+1.8AMay: +1.6°F+1.6MJune: +2.3°F+2.3JJuly: +1.7°F+1.7JAugust: +1.5°F+1.5ASeptember: +0.4°F+0.4SOctober: +1.3°F+1.3ONovember: +1.0°F+1.0NDecember: +0.1°F+0.1D

June has warmed the most — about 2.3°F. The warming runs across the whole year, not just one season.

Methodology & sources

Temperature — 1991–2020 normals computed from 18 years of daily observations at Karlsruhe, a weather station, about 4 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →