France · Seine-Maritime
Sea temperature at Le Treport-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 | 20.7 |
| Thu 3 | 20.5 |
| Fri 4 | 20.7 |
| Sat 5 | 20.8 |
| Sun 6 | 20.7 |
| Mon 7 | 20.8 |
| Tue 8 | 20.7 |
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 | 14 | — |
| Feb | 13 | — |
| Mar | 14 | — |
| Apr | 16 | — |
| May | 19 | — |
| Jun | 22 | — |
| Jul | 24 | — |
| Aug | 25 | — |
| Sep | 24 | — |
| Oct | 22 | — |
| Nov | 19 | — |
| Dec | 16 | — |
No measured in-season sea temperature has been published for Le Treport-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 temperature is the sea at Le Treport-Plage right now?
Right now the water at Le Treport-Plage is around 20°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 Seine-Maritime.
When should you plan a swimming trip to Le Treport-Plage?
June–October, 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 Seine-Maritime.
Is the sea temperature chart above measured or estimated?
Not yet for Le Treport-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.