Greece sees mixed sunshine and thunderstorms with heat up to 35 °C on June 25‑28, 2026
The national weather service forecasts a mixed pattern for Greece from Thursday 25 June 2026 through the weekend. On Thursday the country will be generally clear, but Thessaly will experience increased cloudiness with local rain showers and isolated thunderstorms. The rest of the mainland and the Ionian islands will have mostly sunny conditions, with occasional local rain in mountainous areas. Winds will come from the north‑north‑west at 3‑5 Bft, strengthening in the Aegean to 6‑7 Bft and locally reaching up to 9 Bft on some islands. Temperatures will hover between 31 °C and 33 °C across most regions, climbing to 34 °C locally and up to 35 °C in the interior and eastern plains. The forecast continues into Friday and the weekend with a modest temperature rise, persistent breezy conditions and scattered mountain showers, while fire‑danger breezes (boreas) intensify over the Aegean.
These conditions affect the whole country, prompting attention to strong winds and potential local thunderstorms, especially in mountainous zones.