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The third warmest summer in the Basque Country since 1970 has ended

In June, July, and August there were three heat waves: the first from 18 to 21 June, the second from 27 June to 1 July, and the third from 10 to 17 August.

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Hot in Bilbao. Photo: EITB

This is the third hottest summer in the Basque Country since 1970, only behind 2022 and 2023, with an anomaly of 1.6 degrees (higher than average) and a heat wave of 17 days.

Besides, it has been dry, except in the northeast of Gipuzkoa, where it has been very wet.

During the months of June, July and August, that is, the weather summer, therehave been three heat waves : the first from 18 to 21 June, the second from 27 June to 1 July and the third from 10 to 17 August.

In the historical record, 2022 was unprecedented, with more than 23 days of extreme heat, divided into four heat waves, which surpassed the 2016 record of 19 days.

June was a "very hot" month, the record for historical series with 2003, with an anomaly of 3.1 ° C. In July, temperatures normalized, although in several areas they were above average, and in August they rose again, well above the average in the interior regions and in Gran Bilbao, where it was the third hottest August after 2022 and 2003.

On the 6th of August a long heat wave began, extending to the 17th. The warmest day was the 15th. On that day the station of Sodupe-Cadagua recorded 44.9 ° C, and many other stations on the Cantabrian side (in the interior of Bizkaia and Gipuzkoa), especially those in the west, reached 43-44 ° C.

At some stations (Gardea (Laudio) 44 ° C, Igorre 43.8 ° C, Galdakao 43.5 ° C, Mungia 42.2 ° C, Arrasate 41.8 ° C, Ibai Eder 41.5 ° C, Mirror 39.2 ° C, Abetxuko 38.8 ° C and Miramon 38.1 ° C), the absolute maximum temperature records were broken.

During this period sunstroke was slightly higher than normal, with 5-10% more hours of sunshine, especially on the Mediterranean side. In the capitals, Bilbao recorded 625 hours of sunshine, San Sebastian 615 and Vitoria 763.

In terms of rainfall, the highest values were recorded in the north-east of Gipuzkoa, including the coast, with several stations exceeding 300 l/m² (Eskas 514.5, Ereñozu 391.3, Oiartzun 371.8, Añarbe 347.9, Andoain 303.9 and Lasarte 273.9).

During the three months of the weather summer, the Basque Government activated 12 orange alerts (6 for extreme high temperatures, 3 for persistent high temperatures and 3 for intense rainfall) and 72 yellow alerts (19 for intense rainfall, 25 for extreme high temperatures, 15 for persistent high temperatures, 5 for forest fires, 6 for wave height for the first two miles and 1 for coastal impact).

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