On Tuesday, Greece will experience plenty of sunshine with occasional clouds, though showers and isolated thunderstorms are expected to develop from midday onwards, mainly over the mountainous areas of Thessaly, Central Greece, the Peloponnese, and possibly Macedonia. Brief showers may also occur over parts of the Ionian Islands.

Temperatures will remain near seasonal averages. In Western Macedonia, values will range from 12–28/29°C, while the rest of Macedonia and Thrace will see 14–30/32°C. Thessaly will record 15–32/34°C, Epirus 17–33°C, and the rest of the mainland 16–32/34°C. The Ionian Islands will range from 18–32°C, the Aegean Islands and Crete 19–30/32°C, and the Eastern Aegean and Dodecanese may reach up to 33–34°C.

Winds in the Aegean Sea will blow from the north at 4–5 Beaufort, locally up to 6 Beaufort, later shifting to north-northwesterly at similar strength. In the Ionian Sea, winds will start northwesterly at up to 4 Beaufort.

In Athens, the weather will be mostly clear with passing clouds. Northerly to northeasterly winds will reach 3–4 Beaufort, occasionally 5 Beaufort. Temperatures in the city center will range between 24°C and 32/33°C.

In Thessaloniki, skies will be partly cloudy, becoming denser at midday with a chance of brief showers or an isolated thunderstorm, especially in surrounding mountains. Winds will blow from the south to southeast at 3–4 Beaufort. Temperatures will range between 22°C and 29/30°C.

Overall, Tuesday will be a pleasant summer day across Greece, with localized afternoon showers confined to mountainous inland areas, while coastal and island destinations remain mostly sunny and dry.