A strong cold front sweeps across the country, bringing widespread frost and freezing temperatures in northern, central, and southern regions — affecting travel, infrastructure, and daily life.
As the meltemia winds batter the Aegean and temperatures climb toward 40°C, authorities issue a very high fire risk alert for Attica, Crete, Central Greece, and the North Aegean.
Severe weather conditions are expected on Thursday with heavy rainfall, thunderstorms, and strong winds affecting multiple regions.
According to Marousakis, the shift will be driven by a cold air mass moving south from the northern Balkans, which will clash with the hot air near the surface that built up during recent high temperatures
The heatwave, among the strongest the country has seen in recent years, has brought persistent clear skies, minimal rainfall, and dangerous levels of heat stress — especially in urban areas like Athens and Thessaloniki.
According to the updated emergency weather bulletin issued at noon on July 4, very high temperatures are forecast in our country until Wednesday (09-07-25). The highest values (maximum values of more than 40 degrees) will occur from today (07-07-25) in the interior of mainland Greece. On Thursday (10-07-25) a significant drop in temperature is expected throughout the country.
According to the National Meteorological Service (EMY), strong northerly winds—reaching up to 9 Beaufort locally—are expected across the Cyclades, Crete, the Dodecanese, and the eastern Aegean. The Fire Risk Prediction Map issued by the General Secretariat for Civil Protection has marked at least 10 regions, including Attica, in the “red zone” for extreme fire risk.
Fires from lightning on Friday night in five areas of Thessaloniki - Yesterday the temperature exceeded 43 degrees Celsius in Skala Messinia - In force the EMF emergency bulletin
Therefore, protective measures are suggested, including regular cool showers, especially for vulnerable groups such as the elderly, outdoor workers, children, pregnant women, and individuals with chronic illnesses.
Also, winds will continue to blow strong with intensities reaching even 7 Beaufort in the Aegean Sea with weakening from Sunday afternoon, the former EMY director added.
