Islares – Arenillas

Castro Urdiales · Cantabria · Spain

Today’s forecast: the current surf forecast for Islares – Arenillas (wave height, swell, wind, tide and a 0–10 rating for every hour of the next 16 days) are only shown on SurfCams. They change every hour, so this text doesn’t contain them. To check today’s surf, open https://surf-cams.com/spot/islares.

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Arenillas is a small cove at Islares, west of Castro Urdiales and on the east side of the Agüera river mouth. It is sheltered, so it needs a decent swell before anything happens. Then it gives gentle rights and lefts over sand beside a rocky overhang, with a right off the river channel. It is a quiet spot for learners, away from the busy beaches.

Level
Beginners
Break
Beach break, sand
Waves
Lefts and rights
Crowd
Busy
Season
autumn, winter, spring
Boards
A longboard, mini-mal or fish for the soft, short waves.

When it works

✓ A strong north-west swell of about 1.5 m or more, with a south, south-west or south-east wind, on the low and rising tide.

When it doesn't

✕ Small swells don't reach it, so summer is usually flat, and it fills in at high tide or goes shapeless in a northerly wind.

Watch out for

  • currents
  • rocks

Best months

January, February, March, October, November, December

Local tips

Locals go in from the steps by the rock overhang and let the current carry them out to the take-off. It is quiet in winter. At weekends day-trippers from Bilbao fill it up, which feels busy for such a small wave, so share the few peaks politely.

Getting there

Leave the A-8 at the Islares exit and park on the dirt area by the beach. The break is a few minutes' walk away.

Travel notes

How often it works
It works fairly often in the cooler months once a good north-west swell arrives. The small, sheltered cove gives smaller, shorter waves than the open beaches, and it is usually flat in summer.
Crowd and vibe
Empty on weekdays and busy at weekends, mostly with day-trippers from Bilbao. No localism is reported, but the take-off spot is tiny, so be patient.
Camping and vans
Camping Playa Arenillas sits right above the cove. It opens roughly April to September and is often full in July and August. The access road is tight for long vans, and Camping de Oriñón is under a kilometre further west. Nearest campsite about 0.5 km away.
Facilities
Summer showers, toilets and lifeguards, a small car park, board hire, and the campsite bar and restaurant.
Water quality
The water is clear on calm days. Arenillas is not on the 2026 Bandera Azul list, and no official Náyade rating was found.

Ideal conditions

Swell
NW–N best, WNW–NNE works
Size
1.5–2.5 m offshore swell; starts at 1 m, holds to 3.5 m
Period
9 s minimum, best from 12 s
Wind
Offshore ESE–S; handles onshore up to 12 km/h
Tide
low best, avoid high, on the rising tide
Faces
WNW (301°)

Live cam

No cam at this spot yet: the forecast and the guide are on the map.

Nearby spots

All spots in Cantabria · All spots

Sources