On Tuesday, December 16, 2025, very good weather conditions are expected across Greece, making it an ideal day for travel and outdoor activities. Sunshine will dominate nationwide, while localized cloud cover will develop over eastern mainland regions, Chalkidiki, and Crete. No widespread rainfall is expected.
During the early morning and evening hours, visibility will be reduced across western, central, and northern mainland areas due to fog. Frost is expected around daybreak, particularly in central and northern mainland regions, which may affect early travel conditions.
Temperatures will range as follows:
Western Macedonia: -9°C to 9–10°CEastern Macedonia & Thrace: -3°C to 12–14°CThessaly: -2°C to 13–15°CEpirus: -1°C to 14°CRemaining mainland areas: 2°C to 14–16°CIonian Islands: 7°C to 15–16°CAegean Islands & Crete: 6°C to 15–17°C
In the Aegean Sea, northerly winds will blow at 4–5 Beaufort, locally reaching 6 Beaufort, creating choppy conditions, especially for maritime travel. In the Ionian Sea, winds will be lighter, from east to southeast, up to 4 Beaufort.
Athens and Attica:
Attica, including Athens, will see mostly clear skies with only limited cloud cover. Northerly to northeasterly winds will blow at 3–4 Beaufort, locally up to 5 Beaufort in eastern parts of the prefecture. Temperatures will range from 7°C to 15–16°C.
Thessaloniki:
Thessaloniki will enjoy sunny weather throughout the day. Visibility may be reduced overnight and early in the morning due to fog. Winds will be light and variable, up to 3 Beaufort. Temperatures will range from 4°C to 13°C.