Mild in Dec
20°C average high
avg high · 6° at night
25°C+ on 1 in 10 days
Spain
Alicante & Costa Blanca weather in December
Is it warm? Not really. December in Alicante & Costa Blanca is cool: afternoons average 17°C and nights 9°C. Most days (80%) peak between 14°C and 20°C.
Cool · average high
17°C
25°C or more on almost no days; 20°C or more on about one in ten days.
- Average low9°overnight
- Sea16°average, 2023–2025
- Rainy days225 mm in the month
- SkySome cloud44% cloud · 39% clear days
How warm it really gets
Every December afternoon from 2011–2025: 465 days. Most (80%) peaked between 14° and 20°.
December, year by year
The average December high in each year. The warmest, 2022, averaged 19°C; the coolest, 2013, 15°C.
Compared with home
Average December highs. Expect rain on about 2 days (25 mm in a typical month).
- Alicante & Costa Blanca17°
- Cork10°
- Dublin9°
- London9°
- Belfast8°
- Manchester8°
- Glasgow7°
Warmer in December, not much further
Flying times are estimates from Dublin; Alicante & Costa Blanca is about 2h 30m.
Cool in Dec
20°C average high
avg high · 15° at night
25°C+ on rarely
Mild in Dec
21°C average high
avg high · 12° at night
25°C+ on 1 in 10 days
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