Is December a good month to surf San Sebastián?

December is outside San Sebastián's main surf season (March–April, September–November), so surf is less reliable, though it can still work on the right day.

How warm is the sea in San Sebastián in December?

About 14°C on average, which calls for a 4/3mm full wetsuit.

What is the weather like in San Sebastián in December?

Air temperature averages 10°C, with about 3.8 mm of rain per day and average winds of 18 km/h.

Surf San Sebastián in December

Surfing San Sebastián 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 San Sebastián in December

Offshore of San Sebastián, 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 San Sebastián's surf season

San Sebastián's main surf season runs March–April, September–November. December is outside it.

Full San Sebastián surf and remote-work guide →

Frequently asked questions

Is December a good month to surf San Sebastián?: December is outside San Sebastián's main surf season (March–April, September–November), so surf is less reliable, though it can still work on the right day.
How warm is the sea in San Sebastián in December?: About 14°C on average, which calls for a 4/3mm full wetsuit.
What is the weather like in San Sebastián in December?: Air temperature averages 10°C, with about 3.8 mm of rain per day and average winds of 18 km/h.