France · Yvelines
Base de Loisirs de Moisson
Yvelines, 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 | 27.2 | 0.4 |
| Thu 3 | 26.8 | 0.4 |
| Fri 4 | 26.2 | 0.4 |
| Sat 5 | 26.0 | 0.4 |
| Sun 6 | 26.2 | 0.4 |
| Mon 7 | 26.7 | 0.4 |
| Tue 8 | 27.1 | 0.4 |
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: Good2020
- 2021: Good2021
- 2022: Good2022
- 2023: Sufficient2023
- 2024: Excellent2024
- 2025: Excellent2025
Excellent in the most recent season, and 10 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 | Good |
| 2021 | Good |
| 2022 | Good |
| 2023 | Sufficient |
| 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 | 14 |
| Feb | 14 |
| Mar | 14 |
| Apr | 17 |
| May | 19 |
| Jun | 22 |
| Jul | 24 |
| Aug | 25 |
| Sep | 24 |
| Oct | 22 |
| Nov | 19 |
| Dec | 17 |
Location & nearby beaches
Nearby beaches
- Base de Loisirs de Verneuil21 kmYvelines
- Garennes Sur Eure Les Etangs Du Parc23 kmEure-et-Loir
- 37 km
- 43 km
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- By car: there's parking about ~810 m from the beach.
- Bus stop: Base de Loisirs, about ~480 m away.
- Nearest ferry landing is about ~1.7 km away.
Food, stays & town
- Nearest village: Saint-Martin-la-Garenne, about ~1.9 km away.
- 1 place to eat within 1 km
- 1 place to stay mapped nearby Closest is Camping des Groux, about ~1.4 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
Is the water clean at Base de Loisirs de Moisson?
Thinking of swimming at Base de Loisirs de Moisson? 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 2 straight years. There's parking about ~810 m from the beach.
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. Over the 11 classified seasons on record, 10 have come back Excellent or Good — a track record worth checking each year rather than assuming. On site you'll find Lifeguard, Beach bar, and Kids' area. The nearest town, Saint-Martin-la-Garenne, is about ~1.9 km away.
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 Yvelines.
Frequently asked questions
Is it safe to go in the water at Base de Loisirs de Moisson?
Yes — Base de Loisirs de Moisson carries the top EU Bathing Water classification, Excellent, for 2025, and 10 of its 11 classified seasons have rated Excellent or Good. It's also held steady at Excellent for 2 straight years.
What is the sea temperature at Base de Loisirs de Moisson today?
Treat the ~27°C above as illustrative only — Base de Loisirs de Moisson's live marine feed was down when this page was generated, and the figure will be replaced with a real reading automatically once it's back. That's the reading right off Yvelines. On the modeled climatology here, August usually runs warmest.
When does Base de Loisirs de Moisson have the warmest water?
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 Yvelines. 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 — Base de Loisirs de Moisson doesn't have that feed set up yet.
What's the easiest way to reach Base de Loisirs de Moisson?
By car, there's parking about ~810 m from the beach. By bus, the nearest stop is Base de Loisirs, about ~480 m away. There's a ferry landing about ~1.7 km from the beach. The nearest town is Saint-Martin-la-Garenne, about ~1.9 km away.