France · Finistère
Water temperature at Porsmilin
Cool but swimmable
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 water temperature forecast from Open-Meteo, refreshed hourly.
Water temperature
Next 7 days, °C
View as table
| Day | Water temp (°C) |
|---|---|
| Wed 2 | 18.8 |
| Thu 3 | 18.8 |
| Fri 4 | 18.8 |
| Sat 5 | 19.7 |
| Sun 6 | 19.5 |
| Mon 7 | 19.4 |
| Tue 8 | 19.3 |
Water temperature by month
Modeled climatology derived from latitude and season.
Typical vs. measured water 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 | 19 | — |
| Jun | 22 | — |
| Jul | 23 | — |
| Aug | 24 | — |
| Sep | 23 | — |
| Oct | 22 | — |
| Nov | 19 | — |
| Dec | 17 | — |
No measured in-season water temperature has been published for Porsmilin yet — the chart above shows the modeled climatology only. Some countries (Croatia, via IZOR) also record the water temperature at each official water sample; check the water quality page for this beach's sampling status.
Frequently asked questions
How cold or warm is the water at Porsmilin today?
Porsmilin's water temperature is currently around 19°C, based on the most recent hourly reading. See the 7-day chart above for the short-term trend and the monthly chart further down for the seasonal typical. That's the reading right off Finistère.
What's the best month to visit Porsmilin for swimming?
Aim for July–September — the modeled water temperature typically clears 22°C in that window, the rule of thumb for comfortably warm swimming, with August usually the peak. That applies to the water around Finistère.
Is the water temperature chart above measured or estimated?
Not currently for Porsmilin — the chart above is a modeled estimate based on latitude and season rather than a measured average. A few countries (Croatia, via IZOR) do publish the water temperature taken at each official water sample, and that's plotted alongside the modeled curve when it exists.