Rain and isolated thunderstorms are expected across much of Greece today, Friday, 15 May, according to the Hellenic National Meteorological Service (EMY). The national forecast outlines a mostly cloudy day with temporarily increased cloud cover, bringing scattered showers or brief rain — especially during morning hours in western Greece and central Macedonia, and again in the afternoon and early evening across inland mountainous areas elsewhere on the mainland.
Visibility and Fog
Visibility will be locally reduced during early morning and late evening hours over inland regions, where patches of fog are likely to form.
Winds and Temperatures
Winds will blow from the west to southwest at 3–5 Beaufort, reaching up to 6 Beaufort locally in southern areas — gradually easing by nightfall. Temperatures will remain largely stable, ranging from 22–24°C in western and northern Greece, 24–25°C elsewhere, and reaching up to 26°C in parts of eastern mainland Greece.
Regional Forecasts
Macedonia & Thrace
Thrace will see mostly clear skies. Elsewhere, including central and western Macedonia, skies will be partly cloudy, with temporary increases in cloud cover during midday and afternoon hours — bringing localized rain or brief showers, and possibly isolated thunderstorms over mountainous terrain. Winds will be variable at 3–4 Beaufort, shifting to southerly or south-southeasterly in the afternoon. Temperatures will range from 11°C to 23–24°C, dropping 2–3°C lower in western Macedonia.
Ionian Islands, Epirus, Western Sterea, Western Peloponnese
Cloud cover will increase intermittently, with scattered rain or brief showers — especially in coastal and marine areas during the morning, and again over inland mountainous zones in the afternoon and early evening. Winds will be westerly to southwesterly at 3–5 Beaufort, turning southerly by night at similar intensity. Temperatures will range from 12°C to 24–25°C, falling 3–4°C lower in inland Epirus.
Thessaly, Eastern Sterea, Evia, Eastern Peloponnese
Skies will start mostly clear, with clouds increasing temporarily during the afternoon and early evening — leading to isolated rain or brief showers, and possibly isolated thunderstorms over higher elevations. Winds will be variable at 3–4 Beaufort, becoming westerly to southwesterly at 4–6 Beaufort in southern areas — easing by night. Temperatures will range from 10°C to 25–26°C.
Cyclades & Crete
Skies will be mostly clear with occasional, denser cloud patches. Winds will come from western directions at 4–6 Beaufort. Temperatures will range from 17°C to 23°C — reaching up to 25°C in Crete.
Eastern Aegean Islands & Dodecanese
Skies will be mostly clear with intermittent thicker cloud cover. Winds will be westerly to southwesterly at 4–5 Beaufort, locally reaching 6 Beaufort in the Dodecanese. Temperatures will range from 14°C to 22–23°C, rising to 25°C in southern areas.
Attica
Skies will be partly cloudy, with occasional denser cloud patches. Winds will be westerly to northwesterly at 4 Beaufort, shifting to southerly in the afternoon at the same intensity. Temperatures will range from 15°C to 25°C — reaching 26°C locally.
Thessaloniki
Skies will be mostly clear with occasional increases in cloud cover, bringing short-lived, localized rain or brief showers — first during the morning and again in the afternoon and early evening.