MADRID / RankWire.AI / – Mainland Spain experienced the warmest summer on record since the start of official data collection in 1961, with an average temperature of 24.5 degrees Celsius across June, July, and August. Official data from the national meteorological authority confirmed that this seasonal temperature surpassed the previous record set in 2025 by 0.3 degrees Celsius and was 2.4 degrees Celsius higher than the 1991–2020 climate baseline. The summer of 2026 was the hottest ever recorded, with extreme heat events affecting two-thirds of the entire summer period.
Data published by the State Meteorological Agency indicates that Spain faced an unprecedented 61 days of heatwaves during the three months. This figure significantly exceeds the 41 heatwave days recorded in summer 2022. Meteorological analysts highlighted that all ten of Spain’s hottest summers have occurred in the 21st century, pointing to a rapid long-term warming trend across southern Europe.
The extreme heat severely affected public health and municipal infrastructure across both northern and southern regions. The Carlos III Health Institute’s epidemiological mortality data estimates that over 5,000 deaths directly resulted from the intense heat between June and August. This is the highest total recorded since the health agency began standardized heat-related mortality tracking in 2015.
Spain Sets New Record for Summer Temperatures, With 61 Heatwave Days
Environmental conditions across national forest reserves and rural farms worsened due to the sustained high temperatures. Data from the European Forest Fire Information System shows that roughly 296,000 hectares of land were burned by wildfires as of early September. The record heat and extended dry spells drained regional reservoirs, complicating operations for agricultural irrigation and hydroelectric power generation.
Monitoring stations reported that extraordinary thermal conditions extended beyond the usual summer timeframe. On September 2, a station in El Granado, in southwestern Spain, recorded a peak temperature of 45.7 degrees Celsius, matching the national record for September’s highest temperature. Weather experts confirmed that high heat persisted from late May into early September across several autonomous communities.
Data from Meteorological Records Reveal Rapid Warming Trends in the 21st Century
Following the release of the official climate data, government ministers presented the findings to parliament to push for broader environmental protection measures. Minister for the Ecological Transition Teresa Ribera urged parliamentary factions to back comprehensive laws focused on climate adaptation, emergency infrastructure, and drought resilience strategies.
Meteorological agencies and public health institutions will continue to monitor temperature trends and environmental impacts throughout the fall. Official statistical reports and environmental data will remain available through government portals as authorities assess long-term adaptation strategies. Regional administrations are coordinating resource management plans to address ongoing challenges in agriculture and ecosystems.