Temperatures are set to increase in the upcoming days, with the heatwave expected to peak on Friday, as per meteorological forecasts. Mainly affecting inland areas, temperatures may soar to between 40 and 41°C in typically warm regions of the country.
Ξεκινά τριήμερο ζέστης από την Τετάρτη με κορύφωση την Παρασκευή. Αναλυτικά στο κεντρικό Δελτίο Ειδήσεων του @Starchannelnew1 pic.twitter.com/vWso7babTC
— Theodoros Kolydas (@KolydasT) June 23, 2025
As Theodoros Kolydas mentions in a tweet: “A three-day heatwave begins on Wednesday, peaking on Friday.”
Warning of High Fire Risk
Meteorologist Giorgos Tsatrafyllias from Alpha TV cautions about an extremely high risk of fires. He states that fire-weather conditions will worsen in the coming days, as strong north winds are expected to follow the heatwave (Wednesday–Friday).
Tsatrafyllias previously identified seven regions that will be most impacted by the heatwave, where temperatures are anticipated to rise dangerously:
- Thessaly
- Kilkis
- Serres
- Peloponnese
- Boeotia
- Aetolia-Acarnania
- Attica
Upcoming Heatwave Insights from Kallianos
Temperatures are expected to start rising gradually from today (June 24, 2025), reaching up to 37°C. Giannis Kallianos forecasts that it will become even hotter on Wednesday.
His prediction indicates that hot air masses from North Africa will envelop the entire Mediterranean, resulting in a heatwave lasting 3 to 4 days.
Forecasting temperatures for major Greek cities, he notes that Attica could reach 40°C on Friday, while Larissa may see temperatures hitting 42°C.
Projected temperatures:
Attica
- Tue: 36°C
- Wed: 37-38°C
- Thu: 38-39°C
- Fri: 39-40°C
Thessaloniki
- Tue: 34°C
- Wed: 37°C
- Thu: 38-39°C
- Fri: 37-38°C
Patras
- Tue: 33°C
- Wed: 35°C
- Thu: 37-38°C
- Fri: 37-38°C
Heraklion
- Tue: 31°C
- Wed: 33°C
- Thu: 36°C
- Fri: 36°C
Larissa
- Tue: 36-37°C
- Wed: 38-39°C
- Thu: 40-41°C
- Fri: 41-42°C
Weather Today
Expect clear skies, with some localized cloud formation during midday and afternoon, primarily in mountainous inland areas.
Temperatures are expected to be:
- Western Macedonia: 13-31°C
- Rest of Macedonia, Thrace, Thessaly: 19-36°C
- Epirus: 17-33°C
- Central Greece, Peloponnese: 16-35°C
- Ionian Islands: 18-34°C
- North & East Aegean Islands: 17-36°C
- Cyclades: 19-33°C
- Dodecanese: 16-32°C
- Crete: 17-33°C
Winds will be:
- North Aegean: N 2-4 Beaufort
- Thermaikos & Sporades: Variable up to 3 Beaufort by midday
- Central Aegean: N 2-4 Beaufort
- South Aegean: Initially N 3-5, shifting to W 2-4 Beaufort
- Ionian: NW 2-4 Beaufort
In Attica: Clear skies with N winds at 2-4 Beaufort, increasing to 3 Beaufort by midday and afternoon, temperatures 23-35°C. In Thessaloniki: Clear skies, variable winds up to 3 Beaufort, temperatures 24-34°C.
Weather Forecast for Wednesday, June 25
Expect generally clear conditions with temporary clouds over mountainous Macedonia and Epirus in the afternoon. N winds will reach 3-5, up to 6 Beaufort in the eastern Aegean. Temperatures will peak at 37-39°C inland, 35-37°C in the Ionian/eastern Aegean/southern Crete, and 31-33°C in other islands.
Weather Forecast for Thursday, June 26
Overall clear skies, with local clouds developing in mainland mountainous areas during the afternoon. N winds 3-5, locally reaching 6 Beaufort in the central/southern Aegean. Temperatures will rise slightly, approaching very high levels.
Weather Forecast for Friday, June 27
Clear skies are expected with potential afternoon clouds inland, possibly bringing local showers or storms in central/northern mountainous regions. N winds will be 3-5, up to 6 Beaufort in the seas. Summer temperatures will persist.
Weather Forecast for Saturday, June 28
Generally clear weather is anticipated. N winds will be 4-5, reaching 6-7 Beaufort at sea. Expect a temperature drop of 2-3°C.
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