The most hot days Bilbao has recorded, in its 2026 summer.
summer of 1961-19903.8
summer21
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Hot here means 33.0 °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 counted over the whole window; this season is complete, so no year is cut short. That threshold is Bilbao'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.
23 nights that never dropped below 20 °C. No multiple is quoted here. Bilbao averages about 0.7 a year, and dividing by a base that thin produces a large number and no evidence. 28 of the 54 cities are gated this way.
Bilbao's hottest day this year, 42.7 °C, is 4th on this record. The previous best is 44.0 °C in 2023, the dot on the drop line. A typical summer here peaks at 37.3 °C. Its hot-day count is the most on record in its 2026 summer: a count and a peak are different claims, and neither borrows the other's rank.
54 cities are measured this way, each against its own record. See them on the map