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 | 18.8 | 1.3 |
| Thu 3 | 18.8 | 1.2 |
| Fri 4 | 18.8 | 1.4 |
| Sat 5 | 19.7 | 1.4 |
| Sun 6 | 19.5 | 1.1 |
| Mon 7 | 19.4 | 1.7 |
| Tue 8 | 19.3 | 2.2 |
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: Good2022
- 2023: Excellent2023
- 2024: Good2024
- 2025: Good2025
Good 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 | Good |
| 2023 | Excellent |
| 2024 | Good |
| 2025 | Good |
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 | 17 |
| May | 19 |
| Jun | 22 |
| Jul | 23 |
| Aug | 24 |
| Sep | 23 |
| Oct | 22 |
| Nov | 19 |
| Dec | 17 |
Location & nearby beaches
Nearby beaches
- Bertheaume822 mFinistère
- Porsmilin2.1 kmFinistère
- Portez2.3 kmFinistère
- Tregana2.8 kmFinistère
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- Easy by car — there's parking close to the beach.
- Bus stop: Trez Hir Plage, about ~50 m away.
Food, stays & town
- Nearest village: Plougonvelin, about ~1.3 km away.
- 4 places to eat within 1 km Closest is La Crêperie de la Plage, about ~140 m away.
- 2 shops nearby, the closest about ~1.3 km 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
- Water sports
Is the water clean at Trez Hir?
Trez Hir sits on a stretch of coast classed as a coastal bathing site, carrying an official EU Bathing Water rating of Good for the 2025 season. Under the EU Bathing Water Directive, national authorities test for intestinal enterococci and E. coli through the season and report the results the following spring — the 2025 rating was published in spring 2026, and 2026's won't follow 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 sits in Finistère. You can park about ~90 m away.
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. On site you'll find Lifeguard, Showers, and Toilets. Plougonvelin — the closest town — sits about ~1.3 km from here.
“Good” 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 4 places to eat within a kilometre — La Crêperie de la Plage is the closest, about ~140 m away.
Frequently asked questions
Can you safely swim at Trez Hir?
Yes. Its official 2025 EU Bathing Water rating is Good, the second-highest classification, and 11 of the 11 classified seasons on record have rated Excellent or Good. It's also held steady at Good for 2 straight years.
How cold or warm is the water at Trez Hir today?
Right now, the sea at Trez Hir is measuring around 19°C; see the “Right now” panel above for the latest conditions. That's the reading right off Finistère.
What's the best month to visit Trez Hir for swimming?
July–September is typically the most reliable swimming window, with the sea usually warmest in the second half of summer. That applies to the water around Finistère.
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; Trez Hir doesn't have that feed yet.
How do you get to Trez Hir?
By car, it's easy — parking is right by the beach. By bus, the nearest stop is Trez Hir Plage, about ~50 m away. The nearest town is Plougonvelin, about ~1.3 km away.