France · Loire-Atlantique
Pors-Er-Ster
Loire-Atlantique, France
On the beach
Right now
Live conditions from Open-Meteo, refreshed hourly.
7-day outlook
7-day marine forecast from Open-Meteo.
Water temperature
Next 7 days, °C
Wave height
Next 7 days, metres
View as table
| Day | Water temp (°C) | Wave height (m) |
|---|---|---|
| Wed 2 | 21.2 | 0.5 |
| Thu 3 | 21.4 | 0.6 |
| Fri 4 | 21.5 | 0.6 |
| Sat 5 | 22.4 | 0.6 |
| Sun 6 | 21.8 | 0.8 |
| Mon 7 | 21.9 | 0.9 |
| Tue 8 | 21.7 | 1.4 |
Typical water temperature by month
Modeled estimatePlausible seasonal climatology derived from latitude, for illustration — not a measured average.
Monthly water temperature
Typical range across the year, °C
View as table
| Month | Typical water temp (°C) |
|---|---|
| Jan | 15 |
| Feb | 14 |
| Mar | 15 |
| Apr | 17 |
| May | 19 |
| Jun | 22 |
| Jul | 23 |
| Aug | 24 |
| Sep | 24 |
| Oct | 22 |
| Nov | 20 |
| Dec | 17 |
Location & nearby beaches
Nearby beaches
- Port Au Loup425 mLoire-Atlantique
- Brambell1.1 kmLoire-Atlantique
- Saint Michel2.1 kmLoire-Atlantique
- Lerat2.7 kmLoire-Atlantique
Distances calculated as straight-line (haversine) from official coordinates.
How do you get to Pors-Er-Ster?
- Easy by car — there's parking close to the beach.
Food, stays & town
- Nearest village: Port au Loup, about ~400 m away.
- 1 place to stay mapped nearby Closest is Les amis de la nature, about ~290 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).
Is the water clean at Pors-Er-Ster?
Pors-Er-Ster sits on a stretch of coast classed as a coastal bathing site, carrying an official EU Bathing Water rating of Excellent 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 Loire-Atlantique. You can park about ~140 m away.
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 cooler, calmer water either side of that stretch. Port au Loup — the closest town — sits about ~400 m from here.
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. It's been a consistently reliable spot too — the rating has held at Excellent for 11 straight years.