9 hot days so far, 10th of Belfast's 96 summers.

Hot here means 24.2 °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 10 August, so a part-finished summer is never set against complete ones. That threshold is Belfast'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.

The 20 °C night is a Mediterranean measure and Belfast is outside its range. None this year, and no nights in the whole of 1961-1990 by this date. No multiple is quoted, because dividing by a base that thin is arithmetic rather than evidence. 24 of the 42 cities are gated this way.

Belfast's hottest day this year, 28.8 °C, is 8th on this record. The previous best is 30.8 °C in 2022, the dot on the drop line. A typical summer here peaks at 25.0 °C. Its hot-day count is 10th of 96: 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