Temperatures are expected to rise significantly during the upcoming week, potentially reaching up to 41 degrees Celsius. A change in weather conditions is anticipated for the weekend of June 28 and 29, bringing possible intense storms. Meteorologist Klearchos Marousakis noted on Facebook that despite the high temperatures, this brief heatwave lasting between 48 to 72 hours does not constitute a heatwave due to the satisfactory nighttime temperature drops and prevailing meltemi winds.
The thermometer will begin to rise noticeably starting from Tuesday, peaking on Thursday and Friday when temperatures could reach or exceed 40°C locally. According to Marousakis, certain inland areas might experience temperatures near 39 to 41°C. He emphasized that the short duration of this heatwave combined with nighttime cooling and the presence of meltemi winds characterizes it as a strong but fleeting heatwave rather than a full-blown heatwave.
By the end of the week, a disturbance coming from Central Europe is expected to displace the hot air masses, possibly leading to severe storms over the weekend. The general forecast indicates clear skies for most parts of Greece, with some scattered clouds and occasional showers in specific regions like the southern Ionian Sea. Winds will blow from northern directions at moderate speeds, while temperatures are expected to increase gradually, reaching highs of 32-34°C in mainland areas and slightly lower in coastal regions.
Throughout the week, localized cloud formations may occur over mountainous areas, particularly in western and northern Greece. However, overall conditions should remain sunny with only minor chances of rain in certain locations. By Thursday and Friday, widespread high temperatures are expected, with some areas seeing readings as high as 36-37°C. Despite these high daytime temperatures, cooler nights and meltemi winds will prevent the classification of this period as an official heatwave.