Summer 2026 was the third hottest since 1931
Between intense heatwaves and some summer rain, the summer of 2026 was the third hottest since 1931, according to the Seasonal Climatological Bulletin published by the Portuguese Institute for Sea and Atmosphere (IPMA). In mainland Portugal, the summer was classified by the IPMA as 'very hot and normal in terms of precipitation', despite a significant rainfall event at the end of August and two heatwaves. The average temperature was 1.21°C above the 1991-2020 average, reaching 23.17°C. The hottest day occurred on 4 July, with a peak of 44.3°C recorded in Mora, Alentejo, on 3 July.















