Unsettled weather continues across Greece this Saturday, 25 July. Strong thunderstorms, squalls and a fresh temperature drop are affecting mainly eastern mainland areas and the Aegean Sea, with northerly winds reaching 7 Beaufort.
The Hellenic National Meteorological Service (EMY) has issued warnings for heavy rain, frequent lightning and possible local hail. Some regions remain at elevated risk of flash flooding.
Here’s the full breakdown of today’s conditions, regional forecasts, and the outlook for the coming days — including the temporary heat spike expected early next week according to the latest ECMWF models.
Today’s Weather Forecast – Saturday 25 July 2026
Intense weather will be most active in:
- The Sporades until the morning hours
- Central and northern Evia until the morning
- North-eastern Aegean islands (Lemnos, Thassos, Samothrace) until early morning
- Magnesia, especially eastern coastal and marine areas
The rest of the country will be mostly sunny, with only temporary afternoon clouds over the mainland.
Winds: Northerly 4–6 Beaufort, locally 7 Beaufort in the Aegean.
Temperature: Slight further drop, mainly in the east. Most areas 28–29 °C, locally up to 30 °C over the mainland, Crete and the Dodecanese.
Regional Weather Forecasts – Saturday 25 July
Attica Weather
Cloudy with local rain and isolated early-morning thunderstorms. Improvement from midday.
Winds: Northerly 4–5 Beaufort, up to 6 in the east, easing later.
Temperature: 20–28 °C.
Thessaloniki Weather
Cloudy with a few local showers, becoming fair later.
Winds: North-westerly 4–6 Beaufort, easing and turning light variable from the afternoon.
Temperature: 20–29/30 °C.
Macedonia & Thrace Weather
Western Macedonia mostly fair with temporary afternoon clouds. Elsewhere variable cloud, local rain and morning thunderstorms (locally heavy early on Thassos and Samothrace). Improvement from late afternoon.
Winds: Northerly 4–5 Beaufort (up to 6 early), easing later.
Temperature: 18–28/29 °C, locally 30 °C (3–4 °C cooler in western Macedonia).
Ionian Islands, Epirus, Western Sterea & Western Peloponnese
Generally fair with a few temporary afternoon clouds over the mountains.
Winds: Northerly 4–5 Beaufort, locally 6–7 Beaufort in the Ionian early morning, easing later.
Temperature: 20–29/30 °C (minimum 2–3 °C lower in Epirus).
Thessaly, Eastern Sterea, Evia & Eastern Peloponnese
Variable cloud with local rain and thunderstorms, locally heavy in Magnesia (coastal), the Sporades (until morning) and central/northern Evia (until late morning). Phenomena stop by afternoon. Eastern Peloponnese mostly fair with possible mountain showers later.
Winds: Northerly 4–5 Beaufort, up to 6 in the east, easing from midday.
Temperature: 20–29/30 °C (2–3 °C cooler in the north).
Cyclades & Crete Weather
Cloudy with local rain and morning thunderstorms in the Cyclades. Gradual improvement from midday starting from the north.
Winds: North-westerly 5–6 Beaufort, locally up to 7.
Temperature: 22–27 °C, up to 29–30 °C in Crete.
Eastern Aegean Islands & Dodecanese
Eastern Aegean: Cloudy with local rain and morning thunderstorms (locally heavy early on Lemnos). Improvement from the afternoon.
Dodecanese: Cloudy with local rain and possible early isolated thunderstorms, quickly improving.
Winds: Northerly 4–6 Beaufort, locally up to 7 in the south from the afternoon.
Temperature: 22–27/28 °C, locally 29–30 °C in the south.
Weather Outlook – Sunday 26 July
Generally fair with temporary afternoon clouds in the north.
Winds: Northerly 3–5 Beaufort, up to 6–7 in the south-eastern Aegean. Southerly 3–5 Beaufort will develop in the Ionian and western Aegean from the afternoon.
Temperature: Slight rise.
Monday 27 July Forecast
Initially fair in central and northern areas, then increasing cloud with local rain and possible isolated thunderstorms in the north, improving by evening. Elsewhere generally sunny.
Winds: Southerly 3–5 Beaufort (locally 6 in the northern Ionian); westerly 4–6 Beaufort in the south.
Temperature: Further rise.
Tuesday 28 July Forecast
Temporary cloud with local rain and afternoon mountain thunderstorms over the northern Ionian, Epirus, western Macedonia and gradually the rest of the mainland. Improvement in the evening.
Winds: Northerly 4–6 Beaufort, locally up to 7 in the northern Ionian and Aegean.
Temperature: Slight drop in the north.
What Comes After the Storms – ECMWF Outlook for Next Week
A significant weather shift is on the way. According to the latest European Centre (ECMWF) maps, a warm air mass will push temperatures well above seasonal averages early next week before cooler air returns.
- Sunday 26 July: Still relatively mild in the east and north (850 hPa temperatures 13–16 °C). Warming begins in the west and Ionian.
- Monday 27 July: Warm air spreads across most of the country.
- Tuesday 28 July: Peak of the heat, especially in central and southern Greece, the Peloponnese and Crete.
- From Wednesday 29 July: Cooler air arrives from the north-west, first affecting northern and central regions.
- By Friday 31 July: The warm air mass moves fully into the eastern Mediterranean and temperatures return to more comfortable, seasonal levels nationwide.
Stay updated with the latest EMY warnings and local forecasts, especially if you are travelling in the Aegean or eastern mainland areas this weekend.