France · Seine-Maritime
St-Martin-Plage
Seine-Maritime, France
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 | 20.8 | 0.9 |
| Thu 3 | 20.6 | 1.5 |
| Fri 4 | 20.7 | 1.7 |
| Sat 5 | 20.9 | 1.3 |
| Sun 6 | 20.8 | 0.4 |
| Mon 7 | 20.9 | 0.7 |
| Tue 8 | 20.7 | 1.8 |
Water quality history
Official EEA classification, one rating per bathing season, 2015–2025 — real data reported by national authorities.
- 2015: Excellent2015
- 2016: Good2016
- 2017: Good2017
- 2018: Excellent2018
- 2019: Excellent2019
- 2020: Excellent2020
- 2021: Excellent2021
- 2022: Excellent2022
- 2023: Excellent2023
- 2024: Excellent2024
- 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 | Good |
| 2017 | Good |
| 2018 | Excellent |
| 2019 | Excellent |
| 2020 | Excellent |
| 2021 | Excellent |
| 2022 | Excellent |
| 2023 | Excellent |
| 2024 | Excellent |
| 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 | 14 |
| Feb | 14 |
| Mar | 14 |
| Apr | 16 |
| May | 19 |
| Jun | 22 |
| Jul | 24 |
| Aug | 25 |
| Sep | 24 |
| Oct | 22 |
| Nov | 19 |
| Dec | 16 |
Location & nearby beaches
Nearby beaches
- Puys7.3 kmSeine-Maritime
- Dieppe-Plage9.9 kmSeine-Maritime
- Criel-Plage11 kmSeine-Maritime
- Mesnil-Val13 kmSeine-Maritime
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- Easy by car — there's parking close to the beach.
- Bus stop: Berneval-le-Grand Plage, about ~450 m away.
Food, stays & town
- Nearest village: Berneval-le-Grand, about ~1.5 km away.
- 1 place to eat within 1 km Closest is Chez Gazelle, about ~70 m away.
- 2 places to stay mapped nearby Closest is Camping Les Goélands, about ~760 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).
- Families
Is the water clean at St-Martin-Plage?
St-Martin-Plage is a coastal bathing site with an official EU Bathing Water rating of Good for the 2025 season — meets the EU bathing-water standard in the latest annual 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. On site you'll find Pebble shore, Showers, and Toilets. You can park about ~100 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. Worth noting: the rating slipped from Excellent to Good in 2025, so it's especially worth checking the latest local advisories. Berneval-le-Grand — the closest town — sits about ~1.5 km from here.
Worth remembering: “Good” 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 Seine-Maritime. There's 1 place to eat near the beach — Chez Gazelle, about ~70 m away.
Frequently asked questions
Is the water at St-Martin-Plage safe right now?
Generally, yes. St-Martin-Plage holds a Good rating for 2025, the second-best classification, and 11 of 11 classified seasons have met the Excellent-or-Good bar. That said, the rating slipped from Excellent to Good in 2025, so it's worth checking for current local advisories too.
Is the sea warm at St-Martin-Plage today?
Checking in on St-Martin-Plage right now: the water is around 21°C, per the latest reading — the “Right now” panel above tracks it live. That's the reading right off Seine-Maritime.
Which month has the warmest sea at St-Martin-Plage?
July–September tends to be the sweet spot for swimming here, with sea temperatures usually peaking later in that stretch. That applies to the water around Seine-Maritime.
What's behind the water quality rating shown above?
The annual classification — Excellent, Good, Sufficient or Poor — is built from a full season of official testing for intestinal enterococci and E. coli, reported to the European Environment Agency each spring. Some national authorities (Croatia's IZOR among them) also publish individual samples during the season itself; St-Martin-Plage isn't yet covered by that in-season feed.
Can you drive to St-Martin-Plage?
By car, it's easy — parking is right by the beach. By bus, the nearest stop is Berneval-le-Grand Plage, about ~450 m away. The nearest town is Berneval-le-Grand, about ~1.5 km away.