Rank 60 of 80
10.9 hot days a year, average 2016–2025. In 1951–1960 it was 2.9.
Mülheim an der Ruhr has no historical counterpart: no major German city was as hot in 1951–1960 as Mülheim an der Ruhr is today.
| Period | Hot days | Rank | |
|---|---|---|---|
| 1951–1960 | 2.9 | 66 | |
| 1961–1970 | 3.4 | 61 | |
| 1971–1980 | 4.8 | 53 | |
| 1981–1990 | 5.6 | 49 | |
| 1991–2000 | 8.1 | 49 | |
| 2001–2010 | 8.1 | 64 | |
| 2006–2015 | 6.7 | 71 | |
| 2016–2025 | 10.9 | 60 |
This figure describes the location of Mülheim an der Ruhr. No city administration decides on location. On shade over streets, schoolyards and playgrounds, it does.
What can be changed
This measures the share of residential surroundings covered by trees – from the satellite, weighted by the population of the same 100 m cells as the heat figure above. Both figures therefore apply to the same places and can stand side by side. Parks, cemeteries and gardens count. The city’s stock of street trees requires the tree register.
We did not find a heat action plan of its own for Mülheim an der Ruhr; heat protection is part of „Konzept zur Anpassung an den Klimawandel für Mülheim an der Ruhr“ (2020).
Research as of 24 October 2026. Corrections and tips to kontakt@julianzuber.de.
For Mülheim an der Ruhr this has been analysed across the city area: trees, land, heat stress. deutschland-hitzesicher.de/muelheim-hitzesicher (in German)
Each city has its own access to its map. Enquiries to kontakt@julianzuber.de.