Generally clear weather and abundant sunshine will characterize Wednesday (1/7) across most parts of the country. However, during the warmest hours of the day, localized showers and thunderstorms will develop over mainland areas, mainly in the west and north, due to temporary atmospheric instability. Similar conditions will persist over the coming days, with high temperatures continuing and the mercury reaching 37 to 38 degrees Celsius in some areas. Despite these elevated readings, full heatwave conditions will not develop, as the heat will be localized in nature and short-lived. From Friday, and especially throughout the weekend, northerly winds will strengthen, leading to a gradual drop in temperatures and a return to more seasonally normal conditions.
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Sunshine and afternoon instability over mainland Greece on Wednesday
On Wednesday (1/7), weather conditions will remain generally clear with plenty of sunshine across most of the country. During the midday and afternoon hours, temporary cloud buildup will develop over mainland areas, bringing localized rain or showers — mainly in the west and north — while isolated thunderstorms are also expected in the northwest.
Winds will blow from northerly directions, reaching 2 to 4 Beaufort in the Ionian Sea and 3 to 5 Beaufort in the Aegean, with local gusts up to 6 Beaufort.
Temperatures will show no significant change and will remain slightly above seasonal norms. In the Cyclades, northern Crete, and the eastern Aegean, highs will reach 31 to 33 degrees Celsius, while across the rest of the country temperatures will range between 34 and 36 degrees, touching 37 degrees Celsius locally on the mainland.
Weather forecast for Athens and Thessaloniki
In Attica, skies will be generally clear with sunshine throughout the day. Temperatures will range from 24 to 36 degrees Celsius, with eastern parts of the region running 2 to 3 degrees cooler. Winds will blow from northerly directions at 2 to 4 Beaufort, reaching up to 5 Beaufort locally in the east.
In Thessaloniki, generally clear weather will prevail with ample sunshine. Around midday and into the afternoon, brief cloud cover will develop, bringing localized rain or showers, while isolated thunderstorms cannot be ruled out over the surrounding mountain areas. Temperatures will range from 23 to 35 degrees Celsius, with northwesterly winds at 2 to 4 Beaufort.
Extended weather forecast for the coming days
On Thursday, the day will begin with generally clear skies and plenty of sunshine across most regions. From midday onwards, temporary cloud cover will develop over the mainland, producing localized rain or showers, while sporadic thunderstorms are expected mainly over the central and northern mountain areas.
Winds will blow from westerly to northwesterly directions at 2 to 4 Beaufort, locally reaching 5 Beaufort.
Temperatures will show no significant change and will remain above seasonal norms. Island areas will see highs of 30 to 33 degrees Celsius, while mainland temperatures will range between 34 and 37 degrees, climbing to 38 degrees Celsius in very isolated locations.
On Friday, the northern mainland is expected to see some cloud cover, locally increased mainly around midday and the afternoon, with localized rain and isolated thunderstorms.
Across the rest of the country, weather will remain generally clear with considerable sunshine and temporary afternoon cloud buildup over the remaining mainland areas, where localized rain or showers and sporadic mountain thunderstorms are anticipated.
Winds will blow from northwesterly directions at 2 to 4 Beaufort, locally reaching 5 Beaufort, while from the afternoon onwards winds will strengthen locally to 6 Beaufort in the southeastern regions and northern Ionian.
Temperatures will show a slight drop in the north, while the rest of the country will see no significant change.
