On the beach
Right now
Live conditions from Open-Meteo, refreshed hourly.
7-day outlook
7-day marine forecast from Open-Meteo.
Sea temperature
Next 7 days, °C
Wave height
Next 7 days, metres
View as table
| Day | Sea temp (°C) | Wave height (m) |
|---|---|---|
| Wed 2 | 18.3 | 0.9 |
| Thu 3 | 19.0 | 0.7 |
| Fri 4 | 19.2 | 0.8 |
| Sat 5 | 19.4 | 1.2 |
| Sun 6 | 19.7 | 1.2 |
| Mon 7 | 19.5 | 1.7 |
| Tue 8 | 18.8 | 1.4 |
Water quality history
Official EEA classification, one rating per bathing season, 2015–2025 — real data reported by national authorities.
- 2015: Excellent2015
- 2016: Excellent2016
- 2017: Excellent2017
- 2018: Excellent2018
- 2019: Excellent2019
- 2020: Excellent2020
- 2021: Excellent2021
- 2022: Excellent2022
- 2023: Excellent2023
- 2024: Excellent2024
- 2025: Excellent2025
Excellent in the most recent season, and 11 of 11 classified years rated Excellent or Good.
- Excellent
- Good
- Sufficient
- Poor
- Not classified
View as table
| Year | Classification |
|---|---|
| 2015 | Excellent |
| 2016 | Excellent |
| 2017 | Excellent |
| 2018 | Excellent |
| 2019 | Excellent |
| 2020 | Excellent |
| 2021 | Excellent |
| 2022 | Excellent |
| 2023 | Excellent |
| 2024 | Excellent |
| 2025 | Excellent |
Typical sea temperature by month
Modeled estimatePlausible seasonal climatology derived from latitude, for illustration — not a measured average.
Monthly sea temperature
Typical range across the year, °C
View as table
| Month | Typical sea temp (°C) |
|---|---|
| Jan | 16 |
| Feb | 15 |
| Mar | 16 |
| Apr | 18 |
| May | 20 |
| Jun | 22 |
| Jul | 24 |
| Aug | 25 |
| Sep | 24 |
| Oct | 23 |
| Nov | 20 |
| Dec | 18 |
Location & nearby beaches
Nearby beaches
- Playa As Furnas1.4 kmA Coruña
- Playa Queiruga2.9 kmA Coruña
- Playa O Dique4.0 kmA Coruña
- Playa Area Longa - P. do Son4.6 kmA Coruña
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- By car: there's parking about ~380 m from the beach.
- Nearest bus stop is about ~710 m away.
Food, stays & town
- Nearest town: O Porto do Son, about ~8.9 km away.
- 2 places to eat within 1 km Closest is Boca do Río, about ~380 m away.
- 1 shop nearby, about ~730 m away
What kind of beach is this?
This beach belongs to a small coastal village. It's usually calmer than a resort or town beach, though a popular village spot can still fill up on the best summer days.
Estimated from OpenStreetMap surroundings data (ODbL).
- Families
Is the water clean at Playa R?o Sieira?
Thinking of swimming at Playa R?o Sieira? The short answer: its official EU Bathing Water rating for 2025 is Excellent — the highest official classification under the EU bathing-water assessment. That rating is set once a year under the EU Bathing Water Directive, from a full season of testing for intestinal enterococci and E. coli reported to the European Environment Agency the following spring, so the 2025 season's grade appeared in spring 2026 and the 2026 season won't be graded until spring 2027. In addition to that yearly rating, some national authorities — for Croatia, the national environmental authority — publish individual water sample results during the season itself, ahead of the annual report. It's been a consistently reliable spot too — the rating has held at Excellent for 11 straight years. There's parking about ~380 m from the beach.
That rating has been consistent: every one of the 11 classified seasons on record has come back Excellent or Good. If you're timing a visit around water temperature rather than crowds, July–September is the safest bet, with August typically the peak — expect a cooler, calmer sea either side of that stretch. The nearest town, O Porto do Son, is about ~8.9 km away.
“Excellent” is one point on a four-step scale — Excellent, Good, Sufficient or Poor — assigned once per year from that season's water samples, not a live reading. It describes how the site performs on average across the season, not the exact water quality this afternoon; for day-to-day sea conditions, see the “Right now” and 7-day outlook panels above. There are 2 places to eat within a kilometre — Boca do Río is the closest, about ~380 m away.
Frequently asked questions
Should you swim at Playa R?o Sieira?
Playa R?o Sieira is rated Excellent for 2025 — the top EU Bathing Water classification — with 11 of 11 classified seasons rating Excellent or Good, so yes. It's also held steady at Excellent for 11 straight years.
What temperature is the sea at Playa R?o Sieira right now?
The most recent reading for Playa R?o Sieira shows the sea at around 18°C. For live, up-to-the-hour conditions, see the “Right now” panel above. That's the reading right off A Coruña. On the modeled climatology here, August usually runs warmest.
When does Playa R?o Sieira have the warmest water?
For swimming, July–September is usually the best call — that's the modeled window when the sea here runs warmest. That applies to the water around A Coruña. Within that window, August is typically the single warmest month.
Who measures the water quality rating, and how?
Behind the annual grade: a season of testing for intestinal enterococci and E. coli, reported to the European Environment Agency each spring under the EU Bathing Water Directive. A few countries, Croatia via IZOR included, also publish individual in-season samples ahead of that report, but Playa R?o Sieira doesn't have one published yet.
What's nearby Playa R?o Sieira — parking, buses, or a ferry?
By car, there's parking about ~380 m from the beach. There's a bus stop about ~710 m from the beach. The nearest town is O Porto do Son, about ~8.9 km away.