On Monday, December 15, 2025, generally fair weather is expected across Greece, making it a favorable day for travel and outdoor plans. Sunshine will dominate most regions, while periods of cloud cover will develop in Chalkidiki, eastern Thessaly, Central Greece, the Peloponnese, Evia, Crete, and parts of the Aegean. Brief and scattered showers are possible, mainly in eastern Central Greece, the Sporades, Evia, and Crete. Elsewhere, conditions will remain mostly sunny with only occasional passing clouds. Visibility may be locally reduced in mainland areas during the early morning and late evening hours.
Temperatures will remain typical for mid-December:
- Western Macedonia: -5°C to 9°C
- Eastern Macedonia & Thrace: -2°C to 11°C
- Thessaly: 1°C to 14°C
- Epirus: 0°C to 14°C
- Central Greece: 1°C to 10°C
- Peloponnese: 4°C to 16°C
- Ionian Islands: 7°C to 16°C
- North & East Aegean Islands: 6°C to 12°C
- Cyclades: 9°C to 14°C
- Dodecanese: 12°C to 17°C
- Crete: 8°C to 17°C
Northerly winds will prevail in the Aegean Sea at 3–5 Beaufort, strengthening to 4–6 Beaufort in the Dodecanese and south of Crete. In the Ionian Sea, easterly winds will remain light, up to 3 Beaufort.
Athens:
Athens will experience intermittent cloud cover, with a slight chance of brief showers mainly in the northern suburbs. Northerly winds will blow at 2–4 Beaufort. Temperatures in the city center will range from 9°C to 15°C.
Thessaloniki:
Thessaloniki will enjoy mostly sunny conditions with a few passing clouds. Winds will be light and variable, up to 3 Beaufort. Visibility may be reduced early in the morning and late in the evening. Temperatures will range from 5°C to 11°C.
