France · French Guiana
Montjoly-Plage Louis Caristan
French Guiana, 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 | 30.0 | 0.5 |
| Thu 3 | 29.9 | 0.5 |
| Fri 4 | 29.9 | 0.7 |
| Sat 5 | 30.0 | 0.7 |
| Sun 6 | 30.1 | 0.5 |
| Mon 7 | 30.3 | 0.5 |
| Tue 8 | 30.5 | 0.5 |
Water quality history
Official EEA classification, one rating per bathing season, 2015–2025 — real data reported by national authorities.
- 2015: Good2015
- 2016: Excellent2016
- 2017: Good2017
- 2018: Good2018
- 2019: Good2019
- 2020: Sufficient2020
- 2021: Sufficient2021
- 2022: Sufficient2022
- 2023: Good2023
- 2024: Good2024
- 2025: Good2025
Good in the most recent season, and 8 of 11 classified years rated Excellent or Good.
- Excellent
- Good
- Sufficient
- Poor
- Not classified
View as table
| Year | Classification |
|---|---|
| 2015 | Good |
| 2016 | Excellent |
| 2017 | Good |
| 2018 | Good |
| 2019 | Good |
| 2020 | Sufficient |
| 2021 | Sufficient |
| 2022 | Sufficient |
| 2023 | Good |
| 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 | 23 |
| Feb | 23 |
| Mar | 23 |
| Apr | 24 |
| May | 26 |
| Jun | 28 |
| Jul | 29 |
| Aug | 30 |
| Sep | 29 |
| Oct | 28 |
| Nov | 26 |
| Dec | 24 |
Location & nearby beaches
Nearby beaches
- Plage de Bourda2.0 kmFrench Guiana
- Plage Du Rorota2.7 kmFrench Guiana
- Plage Du Gosselin3.4 kmFrench Guiana
- Plage Des Roches48 kmFrench Guiana
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- Easy by car — there's parking close to the beach.
- Bus stop: Charpantyé, about ~1.3 km away.
Food, stays & town
- Nearest town: Remire-Montjoly, about ~1.8 km away.
- 13 places to eat within 1 km Closest is L'Îlot Joly, about ~320 m away.
- 11 shops nearby, the closest about ~800 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 Montjoly-Plage Louis Caristan?
Montjoly-Plage Louis Caristan 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 Parking. You can park about ~120 m away.
Over the 11 classified seasons on record, 8 have come back Excellent or Good — a track record worth checking each year rather than assuming. If you're timing a visit around water temperature rather than crowds, June–October is the safest bet, with August typically the peak — expect a cooler, calmer sea either side of that stretch. Remire-Montjoly — the closest town — sits about ~1.8 km from here.
That “Good” 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 Good for 3 straight years. There are 13 places to eat within a kilometre — L'Îlot Joly is the closest, about ~320 m away.
Frequently asked questions
Is Montjoly-Plage Louis Caristan a safe beach for swimming?
Yes. Its official 2025 EU Bathing Water rating is Good, the second-highest classification, and 8 of the 11 classified seasons on record have rated Excellent or Good. It's also held steady at Good for 3 straight years.
How warm is the sea at Montjoly-Plage Louis Caristan right now?
As of the latest update, the sea temperature at Montjoly-Plage Louis Caristan is around 30°C — see the “Right now” panel above for live conditions. That's the reading right off French Guiana.
What's the ideal time of year to swim at Montjoly-Plage Louis Caristan?
The most reliable stretch for warm water runs through June–October, based on the modeled climatology. That applies to the water around French Guiana.
What's behind the water quality rating shown above?
National authorities sample the water for intestinal enterococci and E. coli bacteria through the bathing season and report the full-season results to the European Environment Agency each spring for the season just finished, which assigns one of four annual classifications — Excellent, Good, Sufficient or Poor — under the EU Bathing Water Directive. Some national authorities, including Croatia's IZOR, also publish individual in-season sample results ahead of that annual report.
How do I get to Montjoly-Plage Louis Caristan without a car?
By car, it's easy — parking is right by the beach. By bus, the nearest stop is Charpantyé, about ~1.3 km away. The nearest town is Remire-Montjoly, about ~1.8 km away.