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 | 22.7 | 0.9 |
| Thu 3 | 22.2 | 0.7 |
| Fri 4 | 22.9 | 0.6 |
| Sat 5 | 22.2 | 1.4 |
| Sun 6 | 22.2 | 1.4 |
| Mon 7 | 22.8 | 0.9 |
| Tue 8 | 23.0 | 0.9 |
Water quality history
Official EEA classification, one rating per bathing season, 2015–2025 — real data reported by national authorities.
- 2015: Good2015
- 2016: Good2016
- 2017: Excellent2017
- 2018: Good2018
- 2019: Excellent2019
- 2020: Good2020
- 2021: Good2021
- 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 | Good |
| 2016 | Good |
| 2017 | Excellent |
| 2018 | Good |
| 2019 | Excellent |
| 2020 | Good |
| 2021 | Good |
| 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 | 17 |
| May | 20 |
| Jun | 22 |
| Jul | 24 |
| Aug | 24 |
| Sep | 24 |
| Oct | 22 |
| Nov | 20 |
| Dec | 18 |
Location & nearby beaches
Nearby beaches
- Playa Torimbia1.8 kmAsturias
- Playa Toranda (Niembro)2.9 kmAsturias
- Playa Barro4.1 kmAsturias
- Playa Borizo5.0 kmAsturias
Distances calculated as straight-line (haversine) from official coordinates.
Is the water clean at Playa San Antol?n?
Thinking of swimming at Playa San Antol?n? 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 4 straight years.
Looking to avoid the busiest weeks? The water is typically warmest around August, with the most reliable swimming window running July–September; outside that stretch you'll find a cooler sea but a quieter beach. That rating has been consistent: every one of the 11 classified seasons on record has come back Excellent or Good.
Worth remembering: “Excellent” isn't a live reading, it's an annual grade — Excellent, Good, Sufficient or Poor — set once a year from that season's water samples and describing the average, not this afternoon's conditions. For what the sea is doing right now, check the “Right now” panel and 7-day outlook above. It sits in Asturias.
Frequently asked questions
Is Playa San Antol?n safe to swim in?
Yes — Playa San Antol?n carries the top EU Bathing Water classification, Excellent, for 2025, and 11 of its 11 classified seasons have rated Excellent or Good. It's also held steady at Excellent for 4 straight years.
What is the sea temperature at Playa San Antol?n today?
The latest reading puts the sea at Playa San Antol?n at around 22°C — the “Right now” panel above has the full live picture. That's the reading right off Asturias. On the modeled climatology here, August usually runs warmest.
When should you plan a swimming trip to Playa San Antol?n?
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 Asturias. Within that window, August is typically the single warmest month.
Where does the water quality rating come from?
It's based on official water samples: authorities test for intestinal enterococci and E. coli through the season, then report the full-season results to the European Environment Agency each spring, which assigns one of four grades — Excellent, Good, Sufficient or Poor. A few national authorities, including Croatia's IZOR, also publish individual samples during the season itself, ahead of that annual report — that isn't yet available for Playa San Antol?n.