Temperatures across Greece are set to rise further tomorrow (21 June 2026), reaching up to 35°C in several regions. According to the Hellenic National Meteorological Service (EMY), skies will be generally clear nationwide, with only scattered clouds — briefly increasing during midday and afternoon hours, especially over northern mainland areas and the Dodecanese islands.
Localized Rain and Thunderstorms
In northern mainland Greece — particularly over mountainous zones — isolated showers or brief thunderstorms are expected during the afternoon. Similar conditions are forecast for parts of the Dodecanese, where short-lived local thunderstorms or isolated showers may occur.
Wind Conditions
Winds will blow from northerly directions across most of the country. In the western regions and Ionian Sea, they’ll range from 3 to 5 Beaufort, locally reaching 6 near the Ionian islands. Over eastern mainland and the Aegean, winds will be between 4 and 6 Beaufort — peaking at 7 Beaufort in some Aegean areas.
Temperature Outlook
A slight temperature rise is expected nationwide. In the Ionian islands and mainland western regions, highs will reach 33–34°C, locally hitting 35°C in the west. Eastern island regions — including the Cyclades and parts of the North Aegean — will see highs of 27–29°C, rising to 30–32°C in southeastern islands. The southernmost parts of Crete may reach 29°C.
Athens (Attica)
Clear skies throughout the day. Northerly winds of 4–6 Beaufort, locally 7 near eastern coastal areas. Temperatures between 22°C and 32–33°C.
Thessaloniki
Generally clear, with brief cloud development during midday and afternoon — bringing isolated showers or thunderstorms over surrounding mountains. Winds will be light and variable (2–3 Beaufort) early on, shifting to southerly and strengthening to 4 Beaufort by afternoon. Temperatures between 20°C and 32–33°C.
Macedonia & Thrace
Mostly sunny, with brief afternoon cloud cover over mountainous areas — possibly triggering isolated showers or thunderstorms. Winds will be variable (3–4 Beaufort), becoming easterly to northeasterly; locally up to 5 Beaufort offshore. Temperatures between 17°C and 32°C, reaching 33°C in some spots — though western Macedonia will be 3–4°C cooler.
Ionian Islands, Epirus, Western Sterea & Western Peloponnese
Generally clear, with temporary cloud buildup over inland and mountainous areas during midday and afternoon — mainly in Epirus and western Sterea — leading to isolated showers or thunderstorms. Northerly winds of 3–5 Beaufort, locally 6 near the Ionian Sea. Temperatures between 18°C and 33°C, rising to 34°C — and locally 35°C — in inland areas. Central and eastern Epirus will be 3–4°C cooler.
Thessaly, Eastern Sterea, Evia & Eastern Peloponnese
Mostly clear, with brief cloud development over Thessaly’s mountains during midday and afternoon — raising the chance of isolated showers or thunderstorms. Northerly winds of 4–5 Beaufort, strengthening to 6–7 Beaufort in eastern and southern areas. Temperatures between 17°C and 33–34°C.
Cyclades & Crete
Generally clear, with brief morning cloud cover over parts of Crete. Northerly winds of 5–7 Beaufort. Temperatures between 21°C and 27–28°C — reaching 29°C in southern Crete.
Eastern Aegean Islands & Dodecanese
Generally clear, with brief cloud development possible during midday and afternoon — particularly in the Dodecanese — where isolated showers or thunderstorms may occur. Northerly winds of 5–7 Beaufort. Temperatures between 23°C and 29°C.