The weather remains unstable across Greece, with autumn-like conditions returning until April 30.

According to meteorologist Thodoris Kolydas, significant rainfall is expected in mainland areas due to instability and successive weather disturbances affecting the country. Starting this Sunday and lasting about a week, temperatures will remain below seasonal averages. After the first few days of May, temperatures will return to seasonal norms.

🎯 Η ΜΕΣΟΠΡΟΘΕΣΜΗ ΠΡΟΟΠΤΙΚΗ ΤΟΥ ΚΑΙΡΟΥ
✅Αξιόλογα ύψη υετού προβλέπονται μέχρι το τέλος του μήνα κυρίως στα ηπειρωτικά λόγω αστάθειας και διαδοχικών διαταραχών που θα επηρεάσουν τη χώρα μας.
✅Οι θερμοκρασίες από την ερχόμενη Κυριακή και για μια βδομάδα περίπου θα βρίσκονται… pic.twitter.com/zNPmormLKS

— Theodoros Kolydas (@KolydasT) April 24, 2025

Marousakis: Strong Northern Winds Starting Sunday

The weather pattern remains unchanged, with scattered rain and thunderstorms expected, especially during midday and afternoon, according to meteorologist Klearchos Marousakis (OPEN TV). These weather events will mainly occur over land during the afternoon and will move toward coastal and marine areas in the evening. This pattern is expected to continue through Sunday, with instability peaking during midday and afternoon hours. Temperatures will range between 23–25°C.

Starting Sunday, however, strong and locally very strong northern winds are expected over the Aegean Sea, bringing even more autumn-like conditions and further temperature drops throughout the following week, with highs of 18–19°C.

Where It Will Rain Today (According to EMY)

The Hellenic National Meteorological Service (EMY) forecasts locally intense rain and thunderstorms with possible hail from early morning to afternoon in:

• Eastern Thessaly
• Euboea
• Eastern Central Greece (including Attica)
• Cyclades and Crete (late morning)
• Epirus (midday and afternoon)
• Dodecanese (from afternoon onward)

Over 6,000 Lightning Strikes on Thursday

On Thursday, April 24, local rain and thunderstorms were recorded across much of Greece, especially in mainland regions and Crete. Data from the Meteosat-12 third-generation European satellite and its Lightning Imager (LI) instrument recorded more than 6,000 lightning events by 17:40.

Lightning events include:

• Cloud-to-ground strikes (lightning)
• Cloud-to-cloud discharges
• Discharges between clouds and surrounding air

According to the National Observatory of Athens (meteo.gr), the highest recorded rainfall was 33.4 mm in Isoma, Kilkis. In Attica, the highest rainfall was at the SKA weather station with 26.6 mm.

Today’s Weather (Friday)

Expect mostly cloudy skies with locally intense showers and thunderstorms, especially during the warmest parts of the day. In southern regions, storms may include small hail.

Temperature Ranges:

• Western Macedonia: 6–20°C
• Rest of Macedonia & Thrace: 5–25°C
• Thessaly: 6–24°C
• Epirus: 4–21°C
• Rest of mainland: 5–23°C
• Ionian Islands: 10–21°C
• Aegean Islands & Crete: 9–22°C

Winds:

• Central/Northern Aegean: Variable, up to 2–3 Beaufort
• Southern Aegean: Generally westerly, 4–5 Beaufort
• Ionian Sea: Westerly, 2–3 locally up to 4 Beaufort

Athens: Partly cloudy to mostly cloudy with local rain and thunderstorms during midday. Winds light (up to 2 Beaufort). Temperature: 15–21°C
Thessaloniki: Partly cloudy with possible local rain and storms, mostly in surrounding mountains. Winds light southerly (2–3 Beaufort). Temperature: 15–22°C

Saturday, April 26 Forecast

Unsettled weather continues with rain and thunderstorms, possibly intense, especially in:

• Northern and central mainland in the morning
• Euboea in the afternoon

Visibility may be limited in the west during early hours.

Winds:

• Early: Southerly winds (3–5 Beaufort) nationwide
• Afternoon: Northwest winds in the west, southwest in the south (up to 6 Beaufort)

Temperature: No significant change. Highs around 19–21°C.

Sunday, April 27 Forecast

Unstable conditions continue with scattered showers and thunderstorms, initially in:

• Euboea and central Aegean
• Later spreading locally to the mainland

Some storms may be intense and include brief hail. Gradual improvement expected in most areas by the evening.

Winds:

• Northerly (3–5 Beaufort), strengthening in the northern Aegean to 6–8 Beaufort from afternoon onward

Temperature: Slight drop in the north.