On the night of Monday, July 28, 2025, the 13 -day heat expired, one of the largest heatwaves recorded in our country (the 2 longest ones have been recorded in the last 3 years).

The Network of Automatic Meteorological Stations of the National Observatory of Athens/ meteo.gr recorded the areas where the temperature exceeded 37 ° C and 40 ° C (red and purple bars, respectively).

The diagram distinguishes 2 phases:

– The first at the beginning of the heat from 14 to 17 July

– the second (which was also stronger) from July 20 to 28

There was also a short period of 2 days July 18-19 in between the heat period where temperatures ranged near the normal levels for the season.

The number of stations that recorded maximum temperatures above 37 ° C and 40 ° C during the two phases – at the bottom of the diagram, the five largest temperatures marked in each phase

The warmest day in the whole country was July 25, where 362 stations exceeded the heat limit (maximum temperature above 37 ° C) and 167 stations 40 ° C. On this day, almost all of the country’s population was affected by temperatures above 40 ° C.

The highest temperatures of 45.8 ° C was recorded in Skala Messinia on July 25, 2025 and was only 0.6 ° C from the ultimate maximum temperature record of the Athens National Observatory/ meteo.gr, recorded in Aegean Gypsy.

The highest temperature values were recorded in areas of Thessaly, the Peloponnese, Western Greece and Epirus, Eastern Central Greece, in areas of Macedonia and Thrace as well as in southern Crete.