Published on
29/06/2026 - 9:18 GMT+2
The start of July will bring mainland Portugal a prolonged heatwave, with tropical nights, sending temperatures soaring to 43°C in some parts of the country.
According to the Portuguese Institute for Sea and Atmosphere (IPMA (source in Portuguese)), the cause is an 'anticyclone located to the north/northwest of the Azores archipelago' that will pull in a 'very hot, dry air mass'.
Average temperatures are expected to run between 3°C and 7°C above normal across the mainland, the IPMA added, highlighting increases of 5°C to 7°C in the central region and Alentejo.
