Spain records hottest June days on record amid extreme heatwave

Spain recorded its two hottest June days on record this week, with Tuesday becoming the hottest June day since 1950. The heatwave, driven by a persistent heat dome and Saharan air, has caused 212 heat‑related deaths, while AEMET warns that heatwaves now average 22 days annually—up from just three in past decades.
Spain recorded its two hottest June days on record this week, preliminary data showed Thursday, after an exceptional heatwave sent temperatures soaring and shattered records across several regions. The national average temperature on Tuesday reached 7.1°C above normal—the hottest June day since records began in 1950. Monday ranked as the second‑hottest, while Sunday was the eighth hottest.
Regional records and deaths
At Bilbao Airport, temperatures exceeded 40°C on Sunday, Tuesday, and Wednesday—the first time the 40°C mark has been hit three times in a single year. Cantabria broke its all‑time heat record at 43.7°C. Preliminary data attributed 212 excess deaths to heat between Sunday and Wednesday. Meteorologists attributed the heatwave to a persistent heat dome over Western Europe combined with hot, dry air from the Sahara.
Long‑term trend and future projections
AEMET said the episode reflects a worsening trend: between 1975‑1984, Spain averaged just three heatwave days per year; over the past decade, that figure has risen to 22 days. Tropical nights—when temperatures stay above 20°C—have surged from 19 to 80 nights annually in Barcelona, and from 16 to 52 in Madrid. The agency attributed the trend to human‑induced climate change, projecting up to 77 heatwave days per year by 2100 under a high‑emissions scenario.
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