A sharp weather transition is forecast across Greece from Friday through Sunday, with severe weather events, strong winds, and a notable temperature drop expected, especially in mainland regions.

Χάρτης Πρόβλεψης Κινδύνου🔥για αύριο Πέμπτη 19/06:

🟡 Υψηλός κίνδυνος 3️⃣ σε:

📍#Αττική #Αργολίδα
📍 περιοχές #Βοιωτίας #Κορινθίας κεντρική & νότια #Εύβοια
📍#Λέσβο #Χίο #Ψαρά

ℹ https://t.co/rAEzmqBTXX@CivPro_GR @112Greece @hellenicpolice pic.twitter.com/wk3xjaZtCg

— Πυροσβεστικό Σώμα (@pyrosvestiki) June 18, 2025

Current Conditions – Thursday, June 19

• Unseasonably hot temperatures persist across much of the country, peaking at 38.4°C in Skala Messinia on Wednesday.
• High fire danger (Risk Level 3) remains in effect for:
  • Attica
  • Argolida
  • Parts of Boeotia and Corinthia
  • Central and southern Evia
  • Lesvos, Chios, and Psara

🌡️ Temperature Trend

• Through Friday, daytime highs will remain elevated at 34–36°C over mainland Greece.
• A temperature drop of 3–5°C is forecast from Saturday, returning values to seasonal norms.

Severe Weather Outlook

Friday, June 20

• Morning: Generally clear skies nationwide.
• Afternoon onward: Rapid development of instability with localized thunderstorms, primarily affecting:
  • Macedonia
  • Thrace
  • Thessaly
  • Mountainous zones of Central Greece and the Peloponnese
• Storm intensity may be significant in parts of Halkidiki, Sporades, Magnesia, Evia, Sterea, and Peloponnese, per ERT meteorologist Nikoleta Ziakopoulou.

Saturday, June 21

• Widespread unsettled weather over:
  • Central Macedonia
  • Sporades
  • Thessaly
  • Evia
• Showers and thunderstorms are expected mainly midday to afternoon in mainland Greece, especially Central Greece and the Peloponnese.
• Conditions improve later in the day.
• Temperatures decline noticeably, maxing out 3–5°C lower than previous days.

Sunday, June 22

• Mostly clear conditions return, with scattered afternoon clouds and isolated mountain showers inland.
• Strong northern winds persist:
  • Aegean Sea: 7 to locally 8 Beaufort
  • Mainland & Ionian: 3 to 5 Beaufort
• Further cooling, particularly in eastern regions.

Wind Forecast

• Until Friday: North winds in the Aegean at 5–6 Beaufort
• Saturday: Increasing to 6–7 Beaufort
• Sunday: Peaking at 8 Beaufort in parts of the Aegean
• Easing from Monday onward

 Regional Highlights

Attica

• Today: Sunny, 24–34°C, light north winds.
• Weekend: Cooler with local breezes; possible instability Friday PM.

Thessaloniki

• Today: Clear skies, 22–32°C, calm to light northerlies.
• Friday/Saturday: Afternoon showers or storms possible.
• Prepare for rapid weather deterioration Friday–Saturday with storm potential and strong winds.
• Monitor civil protection alerts, especially in fire-prone and storm-affected areas.
• Sailors and beachgoers should heed marine forecasts due to increasing wind and wave activity in the Aegean.

Stay updated with reliable forecasts from the National Observatory of Athens, Hellenic National Meteorological Service (HNMS), and local authorities.

🎯 Η ΠΡΟΟΠΤΙΚΗ ΤΟΥ ΚΑΙΡΟΥ
✅Θερμοκρασίες εως την Παρασκευή το πολύ 34 με 36 στα ηπειρωτικά και άστατος καιρός την Παρασκευή και το Σάββατο στα ηπειρωτικά με μπόρες η καταιγίδες κυρίως το μεσημέρι και το απόγευμα. To ΣΚ πέφτει η θερμοκρασία κατά 3 με 5 βαθμούς και επανέρχεται σε… pic.twitter.com/ilBtBKaZbc

— Theodoros Kolydas (@KolydasT) June 18, 2025