The most hot days Cologne has recorded by this date.

Cologne's records begin in 1958, but the station moved 1.3 km in 1970 and 1.63 km in 1989, so they are not one continuous site.

Hot here means 31.5 °C or above, a level about one summer day in twenty used to reach at this station between 1971 and 2000. The bar has not moved; the number of days clearing it has. Every year is counted to 8 August, so a part-finished summer is never set against complete ones. That threshold is Cologne's own. It is not a national standard and it is not comparable with another city's: every figure on this page is measured against this station and nothing else.

3 nights so far that never dropped below 20 °C. No multiple is quoted here. Cologne averages about 0.2 a year, and dividing by a base that thin produces a large number and no evidence. 24 of the 42 cities are gated this way.

Cologne's hottest day this year, 38.0 °C, is 5th on this record. The previous best is 40.3 °C in 2019, the dot on the drop line. A typical summer here peaks at 33.2 °C. Its hot-day count is the most on record by this date: a count and a peak are different claims, and neither borrows the other's rank.

42 cities are measured this way, each against its own record. See them on the map