Playa Río Sieira
Luis Miguel Bugallo Sánchez (Lmbuga) · CC BY-SA 3.0 · Wikimedia Commons

Porto do Son · A Coruña

Playa Río Sieira

Swimming conditions, water quality, sea, tides and facilities

950 mSand / Rock
Water17 °CDaily high19 °CUV5High tide15:15Low tide21:23JellyfishNo recent observationsLess favourable conditions · estimate
Directions →
Swimming statusYellow flagEstimateForecast for 27/09 · 13:00Reference sea area: Playa As Furnas · 1.2 km

Now

Forecast for 13:00

AEMET · issued 27/09 09:05
☂
SkyOvercast with light rain
Temperature18 °CFeels like 18 °C
Forecast rain85%
Humidity62%
WindS 1 km/hGusts 10 km/h
Water17 °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 · 167°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 Porto do Son
Today13:00☂18°Overcast with light rain☂ 85% · ↝ S 1 km/h
Today16:00☂19°Overcast with light rain☂ 100% · ↝ SE 3 km/h
Today19:00☁19°Mostly cloudy☂ 100% · ↝ E 2 km/h
Today22:00☂18°Overcast with light rain☂ 55% · ↝ SE 2 km/h
Tomorrow01:00☂16°Overcast with light rain☂ 5% · ↝ E 3 km/h
Tomorrow04:00☁16°Overcast☂ 40% · ↝ SE 4 km/h
Tomorrow07:00☁16°Overcast☂ 40% · ↝ SE 3 km/h
Tomorrow10:00☁17°High cloud☂ 55% · ↝ N 1 km/h
Tomorrow13:00☁18°Mostly cloudy☂ 55% · ↝ W 4 km/h
Tomorrow16:00◐21°Partly cloudy☂ 80% · ↝ SW 10 km/h
Tomorrow19:00☁19°Overcast☂ 80% · ↝ S 11 km/h
Tomorrow22:00☁18°High cloud☂ 5% · ↝ SE 3 km/h
Tuesday 2901:00☁18°High cloud · ↝ SE 6 km/h
Tuesday 2904:00☁19°High cloud · ↝ S 15 km/h
Tuesday 2907:00☁19°Overcast · ↝ S 24 km/h

Today’s weather

At 13:00, the forecast indicates sky conditions of overcast with light rain and a forecast temperature of 18 °C. This period also has a feels-like temperature of 18 °C, 85% chance of rain and wind S at 1 km/h. For the day as a whole, the published forecast gives a high of 19 °C, water temperature around 17 °C and a maximum UV index of 5.

Next days

Today

☁

Overcast

Low 17°High 19°
MorningOvercastAfternoonOvercast with light rain
☂ Rain 100% ↝ SW · 4 km/h Gusts 15 km/h Humidity 62–98% ◉ Water 17° ☀ UV 5
Hourly municipal forecast · issued 27/09 09:05

Tomorrow

☁

Mostly cloudy

Low 16°High 21°
☂ Rain 80% ↝ NW · 4 km/h Gusts 34 km/h Humidity 72–100% ◉ Water 15° ☀ UV 4
Hourly municipal forecast · issued 27/09 09:05

Tuesday 29

☁

High cloud

Low 18°High 19°
☂ Rain 100% ↝ S · 35 km/h Gusts 60 km/h Humidity 70–86% ◉ Water 16° ☀ UV 5
Hourly municipal forecast · issued 27/09 09:05

Wednesday 30

☂

Cloudy with rain

Low 14°High 21°
☂ Rain 100% ↝ SW · 15 km/h Humidity 65–90% ☀ UV 4
Daily municipal forecast · issued 27/09 03:21

Water health

Water quality

NÁYADE source
Latest available test22/09/2025NÁYADE · Ministerio de Sanidad · ES11100071M15071I1
E. coli9 NMP/100 mL
Enterococci9 NMP/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
22/09/2025Not classified9 NMP/100 mL9 NMP/100 mL
08/09/2025Not classified20 NMP/100 mL20 NMP/100 mL
26/08/2025Not classified10 NMP/100 mL9 NMP/100 mL
12/08/2025Not classified9 NMP/100 mL9 NMP/100 mL
30/07/2025Not classified31 NMP/100 mL9 NMP/100 mL
16/07/2025Not classified9 NMP/100 mL9 NMP/100 mL
06/07/2025Not classified9 NMP/100 mL9 NMP/100 mL
23/06/2025Not classified10 NMP/100 mL9 NMP/100 mL
09/06/2025Not classified9 NMP/100 mL9 NMP/100 mL
20/05/2025Not classified9 NMP/100 mL9 NMP/100 mL
23/09/2024Not classified75 NMP/100 mL9 NMP/100 mL
10/09/2024Not classified9 NMP/100 mL9 NMP/100 mL
28/08/2024Not classified64 NMP/100 mL9 NMP/100 mL
18/08/2024Not classified42 NMP/100 mL31 NMP/100 mL
31/07/2024Not classified42 NMP/100 mL9 NMP/100 mL
16/07/2024Not classified9 NMP/100 mL9 NMP/100 mL
03/07/2024Not classified9 NMP/100 mL10 NMP/100 mL
23/06/2024Not classified9 NMP/100 mL9 NMP/100 mL
10/06/2024Not classified9 NMP/100 mL9 NMP/100 mL
20/05/2024Not classified9 NMP/100 mL9 NMP/100 mL
18/09/2023Not classified9 NMP/100 mL9 NMP/100 mL
05/09/2023Not classified240 NMP/100 mL380 NMP/100 mL
23/08/2023Not classified9 NMP/100 mL9 NMP/100 mL
08/08/2023Not classified9 NMP/100 mL9 NMP/100 mL
26/07/2023Not classified9 NMP/100 mL9 NMP/100 mL
11/07/2023Not classified9 NMP/100 mL9 NMP/100 mL
28/06/2023Not classified10 NMP/100 mL9 NMP/100 mL
18/06/2023Not classified9 NMP/100 mL9 NMP/100 mL
05/06/2023Not classified9 NMP/100 mL9 NMP/100 mL
10/05/2023Not classified9 NMP/100 mL9 NMP/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 22/09/2025. 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 Río Sieira is recognised by its isolated character and by a combination of white and golden sand with rocky areas extending over 950 metres. The coastal frontage consists of dunes and has vegetation, within a protected area of the Natura 2000 Network. Its width reaches 28 metres and its usual conditions include strong waves. Access is easy on foot and can also be by car from the C-550, with parking for between 50 and 100 vehicles. It also has a cleaning service and surveillance during the stated season.

Length950 mApproximate size of the beach
Typical width28 mPublished average width
CompositionSand / RockPredominant material
Sand typeWhite / GoldenPublished texture or colour
SettingIsolatedLevel of development
Coastal settingDunesSurrounding landscape
Access typeEasy on foot · By carPublished access options
Available characteristicPromenade
Available characteristicVegetation and dunes
Available characteristicProtected area

Available facilities

Facilities

Only facilities published as available are shown
Cleaning service
MarinaReal Club Náutico Portosín

Facilities and comfort

Confirmed facilities include a cleaning service.

Activities

Published information identifies the nearby Real Club Náutico Portosín marina.

Access and safety

Accessibility and safety

Accessibility and transport

✓
ParkingBetween 50 and 100 spaces
✓
BusIntercity bus, Noia - Riveira · 600 m away

Safety and assistance

⚑
LifeguardsLifeguard staff · Emergency number 112
+
First aidPublished first-aid post
!
Safety signageOfficial beach safety signage
+
Nearest health facilityHospital Comarcal da Barbanza · 6 km

Access and accessibility

Travel options include parking, a bus connection and access from C-550.

Location

Directions

Open directions in Google Maps

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

Playa As Furnas
Porto do Son

Playa As Furnas

1.2 kmfrom this beach
☀ 18 °C · overcast with light rain◉ Water 17 °C
View conditions and facilities →
Playa de Xuño
Porto do Son

Playa de Xuño

1.6 kmfrom this beach
☀ 18 °C · overcast with light rain◉ Water 17 °C
View conditions and facilities →
Porto do Son

Playa de Areas Longas

2.8 kmfrom this beach
☀ 18 °C · overcast with light rain◉ Water 17 °C
View conditions and facilities →
Playa de As Seiras
Porto do Son

Playa de As Seiras

2.8 kmfrom this beach
☀ 18 °C · overcast with light rain◉ Water 16 °C
View conditions and facilities →
Playa Queiruga
Porto do Son

Playa Queiruga

3.1 kmfrom this beach
☀ 18 °C · overcast with light rain◉ Water 16 °C
View conditions and facilities →
Porto do Son

Playa de Serans

3.8 kmfrom this beach
☀ 18 °C · overcast with light rain◉ Water 17 °C
View conditions and facilities →