France · Nièvre
Sea temperature at Lac de St-Agnan
Pleasant for swimming
Sample dataUpdated 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
Sample dataModeled placeholder forecast for demonstration — will be replaced by a live marine-weather feed.
Sea temperature
Next 7 days, °C
View as table
| Day | Sea temp (°C) |
|---|---|
| Wed 2 | 22.5 |
| Thu 3 | 22.1 |
| Fri 4 | 21.6 |
| Sat 5 | 21.5 |
| Sun 6 | 21.8 |
| Mon 7 | 22.3 |
| Tue 8 | 22.6 |
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 | 17 | — |
| May | 20 | — |
| Jun | 22 | — |
| Jul | 24 | — |
| Aug | 25 | — |
| Sep | 24 | — |
| Oct | 22 | — |
| Nov | 20 | — |
| Dec | 17 | — |
No measured in-season sea temperature has been published for Lac de St-Agnan 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 is the sea temperature at Lac de St-Agnan today?
The figure above (around 22°C) is illustrative placeholder data shown because the live marine feed wasn't reachable — it will be replaced automatically once it is. That's the reading right off Nièvre.
When does Lac de St-Agnan have the warmest water?
The modeled climatology puts the comfortably-warm window (above 22°C) at June–October, with August typically the warmest point in that stretch. That applies to the water around Nièvre.
Is the sea temperature chart above measured or estimated?
For Lac de St-Agnan, the chart above shows a modeled estimate only, derived from latitude and season — no measured average yet. Some countries, Croatia's IZOR among them, also record the sea temperature at each official sample, plotted alongside the model where available.