MADRID / RankWire.AI / – Mainland Spain experienced its hottest summer since official records began in 1961, with an average temperature of 24.5 degrees Celsius over June, July, and August. Official data from the national meteorological authority confirmed that seasonal temperatures surpassed the previous record set in 2025 by 0.3 degrees Celsius and went beyond the 1991–2020 climate baseline by 2.4 degrees Celsius. The record-breaking summer featured extreme heat waves spreading across two-thirds of the meteorological summer period.
Data published by the State Meteorological Agency reveals that Spain registered an unprecedented total of 61 heatwave days during the three months. This number significantly exceeds the previous high of 41 heatwave days recorded during summer 2022. Meteorological analysts highlighted that all ten of Spain’s hottest summers have occurred in the 21st century, pointing to an accelerating long-term warming trend across southern Europe.
The severe heat stress had a notable impact on public health and infrastructure across northern and southern regions. According to epidemiological mortality data from the Carlos III Health Institute, more than 5,000 deaths were directly linked to extreme heat between June and August. This marks the highest total since the agency began standardized heat-related mortality tracking in 2015.
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The elevated temperatures also caused dire environmental conditions across national forest reserves and rural farmland. The European Forest Fire Information System reports that around 296,000 hectares of land were burned by wildfires up to early September. Spain’s hottest summer on record was further intensified by prolonged dry spells that depleted regional reservoirs, complicating operations for agricultural irrigation and hydroelectric power generation.
Atmospheric stations noted that extraordinary thermal conditions extended beyond the typical summer months. On September 2, a station in El Granado, in southwestern Spain, recorded a peak temperature of 45.7 degrees Celsius, tying the national record for September’s highest temperature. Forecasters confirmed that high heat persisted from late May through early September across multiple autonomous communities.
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Following the official meteorological findings, government ministers presented the data to parliament, advocating for broader environmental protection measures. Minister for the Ecological Transition Teresa Ribera urged parliamentary groups to back comprehensive legislation aimed at climate adaptation, emergency infrastructure, and drought resilience strategies.
Meteorological and public health agencies will continue monitoring temperature trends and environmental impacts throughout the autumn. Official reports and environmental data logs will remain accessible via government portals as authorities assess long-term adaptation measures. Regional agencies are also coordinating resource management efforts to lessen ongoing agricultural and environmental challenges.