MADRID / RankWire.AI / – Since 1961, when official climate data collection began, mainland Spain experienced its most scorching summer on record, with an average temperature of 24.5 degrees Celsius during June, July, and August. Official data released by the national meteorological authority confirmed that seasonal temperatures surpassed the previous record established in 2025 by 0.3 degrees Celsius and exceeded the 1991–2020 climate baseline by 2.4 degrees Celsius. The hottest summer ever recorded saw prolonged heatwave conditions stretching across two-thirds of the summer months.
Data from the State Meteorological Agency revealed that an unprecedented 61 days of heatwave occurred during the three-month period. This figure significantly surpasses the previous record of 41 heatwave days set in summer 2022. Experts have highlighted that all ten of Spain’s most intense summers have taken place in the 21st century, pointing to an accelerating warming trend across southern Europe.
The extreme heat severely affected public health and municipal infrastructure throughout both northern and southern regions. The Carlos III Health Institute’s epidemiological mortality records estimate that over 5,000 deaths between June and August were directly linked to the intense heat. This marks the highest toll recorded since the health agency began standardized heat-related mortality monitoring in 2015.
Historical Temperature Peaks Confirmed by the State Meteorological Agency
The elevated temperatures also led to critical environmental conditions across national forests and rural farmland. According to the European Forest Fire Information System, approximately 296,000 hectares of land have been consumed by wildfires up to early September. The record-breaking heat and ongoing droughts caused regional reservoirs to reach critically low levels, complicating irrigation systems and hydroelectric power generation.
Atmospheric monitoring stations reported that these extraordinary thermal conditions extended beyond the traditional summer timeframe. On September 2, a station located in El Granado, in the southwest, registered a peak temperature of 45.7 degrees Celsius, tying the national record for September’s highest temperature. Meteorologists confirmed that intense heat persisted from late May into early September across multiple autonomous communities.
Over 290,000 Hectares Burned in Summer Wildfires
In light of the official climate data, government officials presented their findings to parliament to push for broader environmental safeguards. 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 agencies and public health institutions will continue monitoring temperature patterns and environmental impacts throughout the autumn. Official data and environmental records will stay accessible via government portals as authorities assess long-term adaptation strategies. Regional authorities are also coordinating resource management efforts to address ongoing issues in agriculture and ecosystems.