Playa de la Isla
Carlos Cunha · CC BY-SA 3.0 · Wikimedia Commons

Donostia/San Sebastián · Guipúzcoa

Playa de la Isla

Swimming conditions, water quality, sea, tides and facilities

21 mSand
Water23 °CDaily high25 °CUV5High tide15:45Low tide21:53JellyfishNo recent observationsLess favourable conditions · estimate
Swimming statusYellow flagEstimateForecast for 27/09 · 15:00Reference sea area: Playa de la Zurriola · 2 km

Now

Forecast for 15:00

AEMET · issued 27/09 09:05
☁
SkyHigh cloud
Temperature25 °CFeels like 25 °C
Forecast rain0%
Humidity55%
WindN 11 km/hGusts 20 km/h
Water23 °C
Maximum UV5

This is an official forecast for the stated period, not an observation taken at the beach.

Environmental estimate

Conditions less favourable for jellyfish arrival

Forecast wind and the regional coastline orientation are less favourable for jellyfish transport towards the shore. This is a limited-confidence regional physical indicator; it does not confirm the presence or absence of jellyfish at this beach.

Accumulated wind4 km/h · 14°Valid for27/09/2026 13:00

Weather forecast

Hourly and daily outlook

Official municipal forecast and, where available, beach-specific information.

Next hours

Town of Donostia/San Sebastián
Today14:00☁25°High cloud☂ 0% · ↝ N 10 km/h
Today17:00☁23°High cloud☂ 0% · ↝ N 9 km/h
Today20:00☁22°High cloud☂ 30% · ↝ NW 8 km/h
Today23:00☁20°Overcast☂ 30% · ↝ SW 4 km/h
Tomorrow02:00☁19°Overcast☂ 0% · ↝ W 6 km/h
Tomorrow05:00☁18°Overcast☂ 0% · ↝ N 2 km/h
Tomorrow08:00☁18°Overcast☂ 0% · ↝ S 2 km/h
Tomorrow11:00☁20°High cloud☂ 0% · ↝ NE 5 km/h
Tomorrow14:00☁24°Overcast☂ 10% · ↝ N 8 km/h
Tomorrow17:00☁26°High cloud☂ 10% · ↝ N 6 km/h
Tomorrow20:00☁24°Overcast☂ 70% · ↝ W 2 km/h
Tomorrow23:00☂22°Overcast with light rain☂ 70% · ↝ NE 3 km/h
Tuesday 2902:00◐20°Sunny intervals · ↝ E 6 km/h
Tuesday 2905:00◐21°Sunny intervals · ↝ S 10 km/h

Today’s weather

At 15:00, the forecast indicates sky conditions of high cloud and a forecast temperature of 25 °C. This period also has a feels-like temperature of 25 °C, 0% chance of rain and wind N at 11 km/h. For the day as a whole, the published forecast gives a high of 25 °C, water temperature around 23 °C and a maximum UV index of 5.

Next days

Today

☁

High cloud

Low 18°High 25°
☂ Rain 30% ↝ E · 1 km/h Gusts 21 km/h Humidity 54–89% ◉ Water 23° ☀ UV 5
Hourly municipal forecast · issued 27/09 12:25

Tomorrow

☁

High cloud

Low 18°High 26°
☂ Rain 70% ↝ NE · 5 km/h Gusts 37 km/h Humidity 59–100% ◉ Water 22° ☀ UV 5
Hourly municipal forecast · issued 27/09 12:25

Tuesday 29

◐

Sunny intervals

Low 19°High 21°
☂ Rain 55% ↝ S · 15 km/h Gusts 19 km/h Humidity 79–95% ◉ Water 22° ☀ UV 5
Hourly municipal forecast · issued 27/09 12:25

Wednesday 30

☂

Overcast with rain

Low 19°High 30°
☂ Rain 100% ↝ S · 15 km/h Gusts 50 km/h Humidity 45–100% ☀ UV 5
Daily municipal forecast · issued 27/09 12:25

Water health

Water quality

NÁYADE source
Latest available testNo asociadoNÁYADE · Ministerio de Sanidad

A sample or annual classification does not override a later incident or operational flag.

Beach at a glance

What it is like

Characteristics published by official sources

La Playa de la Isla occupies a small strip of golden sand on Santa Clara island, within La Concha bay. At just 21 metres long and 4 metres wide, it lies before a mountainous coastal frontage and forms only at low tide. Access is exclusively by boat: in summer there is a boat service, while in winter a private vessel is required. The island also offers a picnic area, bar and basic services.

Length21 mApproximate size of the beach
Typical width4 mPublished average width
CompositionSandPredominant material
Sand typeGoldenPublished texture or colour
SettingSemi-urbanLevel of development
Coastal settingMountainSurrounding landscape
Access typeBy boatPublished access options

Available facilities

Facilities

Only facilities published as available are shown
WC
Showers
Bins
Cleaning service
Food and drink
Diving
Anchorage
MarinaPuerto Deportivo de San Sebastián

Facilities and comfort

Confirmed facilities include toilets, showers, bins, a cleaning service and food and drink.

Activities

Published information identifies diving, an anchorage and the nearby Puerto Deportivo de San Sebastián marina.

Access and safety

Accessibility and safety

Safety and assistance

⚑
LifeguardsEmergency number 112
+
First aidPublished first-aid post
!
Safety signageOfficial beach safety signage
+
Nearest health facilityHospital de Donostia · 4 km

Practical ideas for your visit

Near this beach

Eat, have a drink, stay or park nearby without spending time searching.

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A few kilometres away

Nearby beaches