France · Côtes-d'Armor
Sea temperature at La Grande Plage
Pleasant for swimming
Updated hourly from the live marine forecast. See the 12-month typical range and, where available, real measured readings further down the page.
7-day outlook
7-day sea temperature forecast from Open-Meteo, refreshed hourly.
Sea temperature
Next 7 days, °C
View as table
| Day | Sea temp (°C) |
|---|---|
| Wed 2 | 21.0 |
| Thu 3 | 21.1 |
| Fri 4 | 21.1 |
| Sat 5 | 21.3 |
| Sun 6 | 21.4 |
| Mon 7 | 21.3 |
| Tue 8 | 21.1 |
Sea temperature by month
Modeled climatology derived from latitude and season.
Typical vs. measured sea temperature
12-month view, °C — modeled line vs. measured sample averages
View as table
| Month | Modeled (°C) | Measured avg. (°C) |
|---|---|---|
| Jan | 15 | — |
| Feb | 14 | — |
| Mar | 15 | — |
| Apr | 16 | — |
| May | 19 | — |
| Jun | 21 | — |
| Jul | 23 | — |
| Aug | 24 | — |
| Sep | 23 | — |
| Oct | 22 | — |
| Nov | 19 | — |
| Dec | 17 | — |
No measured in-season sea temperature has been published for La Grande Plage yet — the chart above shows the modeled climatology only. Some countries (Croatia, via IZOR) also record the sea temperature at each official water sample; check the water quality page for this beach's sampling status.
Frequently asked questions
What's the current water temperature at La Grande Plage?
Right now the water at La Grande Plage is around 21°C, per the latest hourly update. Check the 7-day chart above for the trend, or the monthly chart below for how that compares to the seasonal norm. That's the reading right off Côtes-d'Armor.
When is the best time to swim at La Grande Plage?
July–September, when the modeled water temperature is typically above 22°C — widely considered comfortably warm for swimming. August usually runs warmest. That applies to the water around Côtes-d'Armor.
Is the sea temperature chart above measured or estimated?
Not yet for La Grande Plage — the chart above shows a modeled estimate derived from latitude and season, not a measured average. Some countries (Croatia, via IZOR) also publish the sea temperature recorded at each official water sample; when that data exists for a beach it's plotted alongside the modeled curve.