Is September a good month to surf San Sebastián?

Yes — September falls in San Sebastián's main surf season (March–April, September–November).

How warm is the sea in San Sebastián in September?

About 21°C on average, which calls for a 2mm shorty or springsuit.

What is the weather like in San Sebastián in September?

Air temperature averages 19°C, with about 2.1 mm of rain per day and average winds of 12 km/h.

Surf San Sebastián in September

Surfing San Sebastián in September: in the main surf season, air around 19°C, sea around 21°C, 2.1 mm of rain a day on average. Wetsuit: a 2mm shorty or springsuit.

Surf season

In season

Air temperature

19°C

Sea temperature

21°C

Rain

2.1 mm/day

Wind

12 km/h avg

Average wave height

1.3 m (4 ft)

Big days (top 10%)

2.1 m (7 ft)+

Swell period

10 s

Main swell direction

From NW (315°)

What to wear: with the sea around 21°C in September, expect a 2mm shorty or springsuit.

Surf size in San Sebastián in September

Offshore of San Sebastián, waves in September average 1.3 m (4 ft), below the year-round average of 1.5 m — the 7th biggest month of the year. One hour in ten is 2.1 m (7 ft) or bigger. The dominant swell runs at about 10 seconds from the NW.

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.

September in the context of San Sebastián's surf season

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

Full San Sebastián surf and remote-work guide →

Frequently asked questions

Is September a good month to surf San Sebastián?: Yes — September falls in San Sebastián's main surf season (March–April, September–November).
How warm is the sea in San Sebastián in September?: About 21°C on average, which calls for a 2mm shorty or springsuit.
What is the weather like in San Sebastián in September?: Air temperature averages 19°C, with about 2.1 mm of rain per day and average winds of 12 km/h.