Spain · Ourense
Embalse de Castrelo Castrelo de Mi?o
Ourense, Spain
Right now
Sample dataIllustrative conditions — the live Open-Meteo marine feed wasn't reachable, so these are deterministic placeholder values that will be replaced automatically once the feed is available.
7-day outlook
Sample dataModeled placeholder forecast for demonstration — will be replaced by a live marine-weather feed.
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 | 0.8 |
| Thu 3 | 22.2 | 0.8 |
| Fri 4 | 22.0 | 0.8 |
| Sat 5 | 22.3 | 0.8 |
| Sun 6 | 22.8 | 0.8 |
| Mon 7 | 23.2 | 0.8 |
| Tue 8 | 23.1 | 0.8 |
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 | 23 |
| Jul | 25 |
| Aug | 26 |
| Sep | 25 |
| Oct | 23 |
| Nov | 20 |
| Dec | 18 |
Location & nearby beaches
Nearby beaches
- Rio Mi?o Castrelo de Mi?o3.9 kmOurense
- Rio Valder?as Avi?n14 kmOurense
- Rio Mi?o Ourense20 kmOurense
- Rio Tea Covelo21 kmPontevedra
Distances calculated as straight-line (haversine) from official coordinates.
Is the water clean at Embalse de Castrelo Castrelo de Mi?o?
Embalse de Castrelo Castrelo de Mi?o is a lake bathing site with an official EU Bathing Water rating of Excellent for the 2025 season — the highest official classification under the EU bathing-water assessment. That annual classification comes from the EU Bathing Water Directive: national authorities test for two indicator bacteria, intestinal enterococci and E. coli, throughout the bathing season, then report the full-season results to the European Environment Agency (EEA) the following spring — the 2025 season's rating was published in spring 2026, and the 2026 season won't be rated 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.
That rating has been consistent: every one of the 11 classified seasons on record has come back Excellent or Good. The most reliable swimming window here typically runs from July–September, with the sea usually at its warmest around August. Outside that window the water is cooler and often quieter. It's been a consistently reliable spot too — the rating has held at Excellent for 11 straight years.
That “Excellent” label comes from a full season of official water sampling, not a single test — it's one step on a four-point scale (Excellent, Good, Sufficient, Poor) reassessed once a year. Today's actual conditions can differ from the seasonal average, so for a live snapshot see the “Right now” and 7-day outlook panels above.
Frequently asked questions
Is Embalse de Castrelo Castrelo de Mi?o safe to swim in?
Yes, without much reservation. Embalse de Castrelo Castrelo de Mi?o holds the top EU Bathing Water classification, Excellent, for 2025, and 11 of 11 classified seasons here have rated Excellent or Good. It's also held steady at Excellent for 11 straight years.
What temperature is the sea at Embalse de Castrelo Castrelo de Mi?o right now?
The figure above (about 23°C) is placeholder data — the live marine-weather feed wasn't reachable when this page was built, and the real reading will appear automatically once it is. That's the reading right off Ourense. On the modeled climatology here, August usually runs warmest.
When should you plan a swimming trip to Embalse de Castrelo Castrelo de Mi?o?
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 Ourense. Within that window, August is typically the single warmest month.
How is bathing water quality actually assessed?
Once a year, national authorities report a full season of testing for intestinal enterococci and E. coli to the European Environment Agency, which grades the season Excellent, Good, Sufficient or Poor under the EU Bathing Water Directive. A handful of countries, including Croatia via IZOR, also publish individual in-season samples ahead of that report — Embalse de Castrelo Castrelo de Mi?o doesn't have that feed set up yet.