Playa Arnao
giomodica · CC BY 3.0 · Wikimedia Commons

Castropol · Asturias

Playa Arnao

Swimming conditions, water quality, sea, tides and facilities

450 mSand★ Blue Flag 2026
Water18 °CDaily high23 °CUV5High tide15:38Low tide21:46JellyfishNo recent observationsLess favourable conditions · estimate
Swimming statusYellow flagEstimateForecast for 27/09 · 13:00Reference sea area: Playa Peñarronda · 2.1 km

Now

Forecast for 13:00

AEMET · issued 27/09 09:05
☁
SkyHigh cloud
Temperature22 °CFeels like 22 °C
Forecast rain20%
Humidity62%
WindN 4 km/hGusts 9 km/h
Water18 °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 wind6 km/h · 144°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 Castropol
Today13:00☁22°High cloud☂ 20% · ↝ N 4 km/h
Today16:00☂20°Mostly cloudy with light rain☂ 80% · ↝ N 7 km/h
Today19:00☂19°Overcast with light rain☂ 80% · ↝ NW 5 km/h
Today22:00☂18°Mostly cloudy with light rain☂ 85% · ↝ NW 11 km/h
Tomorrow01:00☂17°Mostly cloudy with light rain☂ 55% · ↝ SW 2 km/h
Tomorrow04:00☁17°Overcast☂ 65% · ↝ SW 9 km/h
Tomorrow07:00☁16°Mostly cloudy☂ 65% · ↝ S 10 km/h
Tomorrow10:00☁19°Overcast☂ 10% · ↝ S 8 km/h
Tomorrow13:00☁21°High cloud☂ 10% · ↝ NE 3 km/h
Tomorrow16:00☂21°Sunny intervals with light rain☂ 100% · ↝ NE 13 km/h
Tomorrow19:00☂21°Mostly cloudy with light rain☂ 100% · ↝ N 11 km/h
Tomorrow22:00☂18°Sunny intervals with rain☂ 55% · ↝ W 5 km/h
Tuesday 2901:00◐17°Partly cloudy · ↝ S 8 km/h
Tuesday 2904:00☁16°High cloud · ↝ S 9 km/h
Tuesday 2907:00☁17°High cloud · ↝ S 4 km/h

Today’s weather

At 13:00, the forecast indicates sky conditions of high cloud and a forecast temperature of 22 °C. This period also has a feels-like temperature of 22 °C, 20% chance of rain and wind N at 4 km/h. For the day as a whole, the published forecast gives a high of 23 °C, water temperature around 18 °C and a maximum UV index of 5.

Next days

Today

☁

High cloud

Low 18°High 23°
MorningHigh cloudAfternoonOvercast with light rain
☂ Rain 85% ↝ E · 2 km/h Gusts 17 km/h Humidity 57–88% ◉ Water 18° ☀ UV 5
Hourly municipal forecast · issued 27/09 09:05

Tomorrow

☁

High cloud

Low 16°High 23°
MorningHigh cloudAfternoonSunny intervals with light rain
☂ Rain 100% ↝ S · 5 km/h Gusts 25 km/h Humidity 70–99% ◉ Water 20° ☀ UV 4
Hourly municipal forecast · issued 27/09 09:05

Tuesday 29

◐

Partly cloudy

Low 16°High 17°
☂ Rain 100% ↝ E · 10 km/h Gusts 12 km/h Humidity 85–99% ◉ Water 19° ☀ UV 5
Hourly municipal forecast · issued 27/09 09:05

Wednesday 30

☂

Sunny intervals with rain

Low 16°High 25°
☂ Rain 95% ↝ W · 15 km/h Humidity 55–90% ☀ UV 4
Daily municipal forecast · issued 27/09 03:21

Water health

Water quality

NÁYADE source
Latest available test26/08/2025NÁYADE · Ministerio de Sanidad · ES12000017M33017B1
E. coli31 UFC/100 ml
Enterococci10 UFC/100 ml
Latest available annual classificationEXCELLENT2025 season · EEA · does not describe current conditions

The 2026 season does not yet have a final annual classification. The 2025 result is historical; for recent conditions, check the latest test and any published incidents.

View all test results
DateAssessmentE. coliEnterococci
26/08/2025No published assessment31 UFC/100 ml10 UFC/100 ml
12/08/2025No published assessment10 UFC/100 ml10 UFC/100 ml
15/07/2025No published assessment10 UFC/100 ml10 UFC/100 ml
17/06/2025No published assessment10 UFC/100 ml10 UFC/100 ml
27/05/2025No published assessment63 UFC/100 ml10 UFC/100 ml
View annual history
2025 EXCELLENT EEA2024 EXCELLENT EEA2023 EXCELLENT EEA2022 EXCELLENT EEA2021 EXCELLENT EEA2020 EXCELLENT EEA2019 EXCELLENT EEA2018 EXCELLENT EEA2017 EXCELLENT EEA2016 EXCELLENT EEA2015 EXCELLENT EEA

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

Water quality

The latest microbiological sample was taken on 26/08/2025. The available annual classification for 2025 is excellent; this is a historical assessment, not confirmation of today’s conditions.

Beach at a glance

What it is like

Characteristics published by official sources

Playa Arnao forms a natural pool known as La Hollina within the Reserva Natural Parcial de la Ría del Eo. Its 450 metres of length and 30 metres of width are covered with white sand, with calm but windy waters, vegetation and a semi-urban frontage. The nearby Arnao recreational area completes the surroundings protected by ZEPA and Site of Community Importance (SCI). It is easily reached on foot or by car from the N-634, with between 50 and 100 parking spaces, adapted ramps, toilets and showers.

Length450 mApproximate size of the beach
Typical width30 mPublished average width
CompositionSandPredominant material
Sand typeWhitePublished texture or colour
SettingSemi-urbanLevel of development
Coastal settingSemi-urbanSurrounding landscape
Access typeEasy on foot · By carPublished access options
Available characteristicVegetation and dunes
Available characteristicProtected area

Available facilities

Facilities

Only facilities published as available are shown
WC
Showers
Bins
Cleaning service
MarinaFigueras

Facilities and comfort

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

Activities

Published information identifies the nearby Figueras marina.

Access and safety

Accessibility and safety

Accessibility and transport

✓
Accessible accessPublished accessible access
✓
ParkingBetween 50 and 100 spaces

Safety and assistance

⚑
LifeguardsSummer season · Emergency number 112
+
First aidPublished first-aid post
!
Safety signageOfficial beach safety signage
+
Nearest health facilityHospital Comarcal de Jarrio · 27 km

Access and accessibility

Accessibility information confirms step-free or accessible access. Travel options include parking and access from N-634.

Practical ideas for your visit

Near this beach

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

About these results: distances are calculated in a straight line and each link opens the stored point, rather than a name search. Position does not imply an editorial recommendation or guarantee opening times or availability.

A few kilometres away

Nearby beaches