Cool in Dec
17°C average high
avg high · 9° at night
25°C+ on rarely
Greece
Athens weather in December
Is it warm? No. December in Athens is cold: afternoons average 14°C and nights 7°C. Most days (80%) peak between 10°C and 18°C.
Cold · average high
14°C
25°C or more on almost no days; 20°C or more on almost no days.
- Average low7°overnight
- Sea18°average, 2023–2025
- Rainy days786 mm in the month
- SkyOften cloudy50% cloud · 29% clear days
How warm it really gets
Every December afternoon from 2011–2025: 465 days. Most (80%) peaked between 10° and 18°.
December, year by year
The average December high in each year. The warmest, 2022, averaged 16°C; the coolest, 2016, 11°C.
Compared with home
Average December highs. Expect rain on about 7 days (86 mm in a typical month).
- Athens14°
- Cork10°
- Dublin9°
- London9°
- Belfast8°
- Manchester8°
- Glasgow7°
Warmer in December, not much further
Flying times are estimates from Dublin; Athens is about 4h.
Cool in Dec
17°C average high
avg high · 8° at night
25°C+ on rarely
Cool in Dec
17°C average high
avg high · 12° at night
25°C+ on rarely
Air: ERA5 reanalysis via Open-Meteo, 2011–2025. Sea: Copernicus Marine analysis via Open-Meteo, 2023–2025. Rainy day = 2 mm or more. Clear day = average cloud cover of 30% or less. These are averages of past weather, not a forecast. Methodology