France · Côtes-d'Armor
Le Guen-Lanruen
Côtes-d'Armor, France
On the beach
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 | 24.9 | 0.6 |
| Thu 3 | 25.1 | 0.6 |
| Fri 4 | 24.9 | 0.6 |
| Sat 5 | 24.4 | 0.6 |
| Sun 6 | 24.0 | 0.6 |
| Mon 7 | 24.0 | 0.6 |
| Tue 8 | 24.4 | 0.6 |
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 | 15 |
| Feb | 14 |
| Mar | 15 |
| Apr | 16 |
| May | 19 |
| Jun | 21 |
| Jul | 23 |
| Aug | 24 |
| Sep | 23 |
| Oct | 22 |
| Nov | 19 |
| Dec | 17 |
Location & nearby beaches
Nearby beaches
- Le Portuais1.1 kmCôtes-d'Armor
- Saint Michel2.0 kmCôtes-d'Armor
- Les Montiers2.0 kmCôtes-d'Armor
- Lourtuais2.1 kmCôtes-d'Armor
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- Easy by car — there's parking close to the beach.
- Bus stop: Lanruen, about ~770 m away.
Food, stays & town
- Nearest village: Erquy, about ~2.7 km away.
- 2 places to stay mapped nearby Closest is Camping Les Pins, about ~1.2 km away.
What kind of beach is this?
With no facilities mapped nearby, this beach is usually on the quiet side even in season — worth knowing if you're after solitude, but also worth bringing your own water and shade.
Estimated from OpenStreetMap surroundings data (ODbL).
- A quiet swim
Is the water clean at Le Guen-Lanruen?
Thinking of swimming at Le Guen-Lanruen? 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. You can park about ~120 m away.
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. Erquy — the closest town — sits about ~2.7 km from here.
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 Côtes-d'Armor.
Frequently asked questions
Is Le Guen-Lanruen a safe beach for swimming?
Yes. Its official 2025 EU Bathing Water rating is Excellent, the top classification, and 11 of the 11 classified seasons on record have rated Excellent or Good. It's also held steady at Excellent for 11 straight years.
Is the sea warm at Le Guen-Lanruen today?
That's placeholder data, not a live measurement: Le Guen-Lanruen's marine-weather feed couldn't be reached, so the panel above is showing an estimated ~25°C until the real feed comes back. That's the reading right off Côtes-d'Armor.
What's the ideal time of year to swim at Le Guen-Lanruen?
The most reliable stretch for warm water runs through July–September, based on the modeled climatology. That applies to the water around Côtes-d'Armor.
What's behind the water quality rating shown above?
The grade comes from a full season of official sampling for intestinal enterococci and E. coli, reported to the European Environment Agency each spring under the EU Bathing Water Directive, which assigns Excellent, Good, Sufficient or Poor. Some countries (Croatia, via IZOR) also publish individual in-season samples ahead of that report; Le Guen-Lanruen doesn't have that feed yet.
Can you drive to Le Guen-Lanruen?
By car, it's easy — parking is right by the beach. By bus, the nearest stop is Lanruen, about ~770 m away. The nearest town is Erquy, about ~2.7 km away.