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 beat the 2025 record by 0.3 degrees Celsius and surpassed the 1991–2020 climate baseline by 2.4 degrees Celsius. The record-breaking summer saw extreme heat events across two-thirds of the meteorological season.
The State Meteorological Agency reported that the country experienced an unprecedented 61 heatwave days during the three-month span, significantly surpassing the previous high of 41 heatwave days recorded in summer 2022. Meteorological analysts highlighted that all ten of the hottest summers in Spain’s history have occurred in the 21st century, indicating a rapid long-term warming trend across southern Europe.
This intense heat had severe effects on public health and municipal infrastructure across northern and southern regions, with epidemiological mortality data from the Carlos III Health Institute estimating over 5,000 deaths directly linked to extreme heat between June and August. This figure marks the highest total since the health agency began standardized heat-related mortality tracking in 2015.
Spain Records Its Hottest Summer Yet, Heatwave Peaks at Sixty-One Days
Prolonged dry conditions also resulted in environmental hardships across national forests and rural farms. Data from the European Forest Fire Information System shows that approximately 296,000 hectares were lost to wildfires by early September. The summer’s record heat, combined with extended dry spells, drained regional reservoirs, complicating operations for agricultural irrigation and hydroelectric plants.
Monitoring stations noted that exceptional heat extended beyond typical summer dates. On September 2, a station in El Granado recorded a peak temperature of 45.7°C, tying Spain’s September record for the highest temperature ever documented nationwide. Forecasters confirmed that high temperatures persisted from late May through early September across multiple autonomous communities.
Climate Data Highlights Rapid Warming in 21st Century
In light of the official meteorological findings, government ministers presented the data to parliament, urging stronger environmental protection initiatives. Minister for the Ecological Transition Teresa Ribera called on legislative groups to back comprehensive policies addressing climate adaptation, emergency infrastructure, and drought resilience.
Meteorological and public health agencies will continue to monitor temperature trends and environmental impacts through the upcoming autumn. Official reports and environmental data will remain accessible via government portals as authorities assess long-term adaptation strategies. Regional agencies are also coordinating resource management to mitigate ongoing impacts on agriculture and ecosystems.