Madrid, 07 August 2026
A measurement buoy off the Balearic island of Mallorca registered a surface temperature of 33.02 degrees Celsius in the Mediterranean on Wednesday – according to the Spanish TV broadcaster RTVE, the highest value ever measured in Spanish waters.
According to information from RTVE, "berichtet der staatliche TV-Sender RTVE, das sei der höchste jemals in spanischen Gewässern gemessene Wert", the record value came from a buoy near the island of Sa Dragonera, located west of Mallorca in the Mediterranean. Official confirmation by the Spanish port authority is still pending, according to RTVE.
Origin of the measurement
The data was reportedly collected by a permanently installed measurement buoy that is part of the oceanographic observation network off the Balearic Islands. Such buoys generally measure the surface temperature of the water continuously and transmit the values automatically to research institutes. RTVE based its reporting on evaluations from this network.
