Weather in Greece: Strong north winds, temperature drop, and storms in the west

The upwind signifier is expected to alteration from today, with temperatures dropping, beardown northbound winds intensifying, and localized showers anticipated successful eastbound and confederate regions, arsenic good arsenic successful the mountainous areas of occidental Greece during the warmer hours of the day.

Μεταβολή του καιρού και προσοχή σε δυτική Ελλάδα από το απόγευμα του Σαββάτου και την Κυριακή, κυρίως σε Νομούς Μεσσηνίας Ηλείας και Αχαίας. Προσοχή σε δυτική Στερεά καθώς και σε Ζάκυνθο Κεφαλονιά . Η Αθήνα δεν επηρεάζεται σημαντικά – Ίσως και καθόλου . Γεγονός είναι οτι από… pic.twitter.com/APjoCFWk8C

— Theodoros Kolydas (@KolydasT) September 25, 2025

According to STAR meteorologist and erstwhile manager of the National Weather Service, Thodoris Kolydas, the existent displacement volition travel implicit the weekend. He warns of unstable upwind and unsafe conditions, peculiarly successful occidental Greece:

• From Saturday day and passim Sunday, dense rainfall and storms whitethorn impact Messinia, Ilia, and Achaia.

• Western Sterea, Zakynthos, and Kefalonia are besides astatine risk.

• Athens, however, is expected to stay mostly unaffected.

“From Sunday onwards, the upwind volition crook autumnal,” Kolydas explains. “Temperatures volition driblet by astir 5 degrees and the consciousness of acold volition beryllium intensified by beardown northerly winds.” Winds successful the Aegean are forecast to scope 7–8 Beaufort connected Friday, easing somewhat from Saturday afternoon.

Meteorologists Warn of “Extremely Dangerous Weather”

Forecast maps published by meteorologist Klearchos Marousakis item the Ionian Islands, occidental Greece, and the Peloponnese arsenic the regions astir apt to beryllium affected by the upcoming question of atrocious weather.

He warns of multi-hour feedback storms westbound of the Pindos mountains, susceptible of producing highly precocious rainfall and importantly expanding flood risk. The storms are expected to past much than 24 hours arsenic they stay locked successful spot by the expected barometric system.

Meteorologist Giorgos Tsatrafyllias besides issued warnings, noting 2 “lines of danger”:

• First enactment (highest risk): Ilia, Achaia, Messinia, Zakynthos

• Second line: Kefalonia–Ithaca, Arcadia, Aitoloakarnania

He added that coastal shipping could beryllium disrupted, particularly successful the cardinal and bluish Aegean connected Friday and Saturday, portion temperatures volition driblet by 6–8°C from Saturday onward.

Thursday’s Coldest Spots

Crete recorded the lowest temperatures connected Thursday morning, with Tzermiado (Lassithi) dropping to 5.1°C. Other single-digit temperatures were measured successful cardinal and bluish Greece arsenic good arsenic successful upland plateaus.
The implicit minimum was recorded astatine Sesi Parnassos with -3.8°C.

Detailed Forecast

Thursday, Sept. 25

• Clouds with localized showers successful Thessaly, Central & Eastern Sterea, Evia, Eastern Peloponnese, and Northern Crete.

• Sunshine elsewhere, with section rainfall successful Epirus, Western Macedonia, and parts of the Peloponnese.

• Temperatures:

  • Northern Greece: 14–26°C (12–22°C successful Western Macedonia)

  • Central/Southern Greece: 17–25°C (up to 27°C successful Thessaly)

  • Western Greece: 17–30°C

  • Cyclades & Crete: 19–25°C

  • East Aegean & Dodecanese: 19–28°C

• Winds: North 5–6 Beaufort successful the Aegean, locally 7 Beaufort (gusts 80–90 km/h). Light to mean successful the Ionian.

Friday, Sept. 26

• Attica: Sunshine with expanding clouds successful the north/east. Temperatures 18–25°C, 2–3°C little successful the north/east. Northerly winds 4–5 Beaufort, up to 6–7 Beaufort successful the east.

• Thessaloniki: Few clouds, locally denser. Temperatures 18–24°C.

Saturday, Sept. 27

• Scattered clouds crossed the mainland and Crete, with section showers.

• From afternoon: rainfall and thunderstorms intensify successful the west, particularly the Ionian and occidental Peloponnese astatine night.

• Winds: SE 3–5 Beaufort successful the west, N 4–6 Beaufort successful the east, Aegean 6–7 Beaufort (up to 8 early).

• Temperatures: 24–25°C north, 26–27°C west/Dodecanese, 25–26°C elsewhere.

Sunday, Sept. 28

• Cloudy successful astir regions, with section showers and storms, particularly successful the Ionian and mainland.

• Western Peloponnese whitethorn spot aggravated phenomena until the afternoon.

• Winds: South successful the west, northbound successful the eastbound 4–5 Beaufort, up to 6 successful the Aegean.

• Temperatures: Slight further drop.