Offshore Stays

Surf Zarautz in December

Surfing Zarautz in December: outside the main surf season, air around 10°C, sea around 14°C, 3.8 mm of rain a day on average. Wetsuit: a 4/3mm full wetsuit.

Surf season

Off-season

Air temperature

10°C

Sea temperature

14°C

Rain

3.8 mm/day

Wind

18 km/h avg

Average wave height

2.1 m (7 ft)

Big days (top 10%)

3.6 m (12 ft)+

Swell period

12 s

Main swell direction

From WNW (293°)

What to wear: with the sea around 14°C in December, expect a 4/3mm full wetsuit.

Surf size in Zarautz in December

Offshore of Zarautz, waves in December average 2.1 m (7 ft), above the year-round average of 1.5 m — the 2nd biggest month of the year. One hour in ten is 3.6 m (12 ft) or bigger. The dominant swell runs at about 12 seconds from the WNW.

These are open-ocean figures from 10 years of hourly wave data, not a beach forecast: a sheltered break will be smaller, an exposed reef or point can be bigger.

December in the context of Zarautz's surf season

Zarautz's main surf season runs March–May, September–November. December is outside it.

Full Zarautz surf and remote-work guide →

Frequently asked questions

Is December a good month to surf Zarautz?
December is outside Zarautz's main surf season (March–May, September–November), so surf is less reliable, though it can still work on the right day.
How warm is the sea in Zarautz in December?
About 14°C on average, which calls for a 4/3mm full wetsuit.
What is the weather like in Zarautz in December?
Air temperature averages 10°C, with about 3.8 mm of rain per day and average winds of 18 km/h.
Climate: NASA POWER (MERRA-2) monthly climatology, 2001–2020. Sea temperature: NOAA Coral Reef Watch CoralTemp v3.1, 5 km monthly SST, 2015–2025 mean (nearest ocean cell). Surf season is Offshore Stays editorial. Waves: Open-Meteo Marine API, ECMWF ERA5-Ocean hourly reanalysis, 2016–2025 (offshore grid cell 43.5°N 2.0°W), retrieved 22 Oct 2026.