Water temperature in La Bernerie En Retz in September

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Is it warm enough to swim in La Bernerie En Retz in September? Average water temperature in La Bernerie En Retz in September is 18.2°C and therefore is not suitable for comfortable swimming. The warmest sea in La Bernerie En Retz in September is 21.8°C, and the coldest is 15.9°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in La Bernerie En Retz

Changes water temperature in La Bernerie En Retz in September 2025, 2024

To get an accurate forecast for the water temperature in La Bernerie En Retz for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in La Bernerie En Retz, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of September.

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 September	19.8°C	19.4°C	17.3°C	20.9°C
2 September	19.5°C	18.9°C	17.4°C	20.5°C
3 September	19.4°C	19°C	17.4°C	21°C
4 September	19°C	18.9°C	17.3°C	21.1°C
5 September	19.1°C	18.8°C	17.3°C	21°C
6 September	19.5°C	18.7°C	17.4°C	20.8°C
7 September	19.4°C	18.5°C	17.5°C	21.2°C
8 September	19.4°C	18.4°C	17.5°C	21.6°C
9 September	19°C	17.9°C	17.4°C	21.4°C
10 September	18.9°C	17.8°C	17.2°C	21.8°C
11 September	18.4°C	17.8°C	17.1°C	21.3°C
12 September	18.3°C	17.5°C	16.8°C	21.2°C
13 September	18.1°C	17.4°C	16.7°C	21°C
14 September	18.3°C	17.2°C	16.7°C	21°C
15 September	18.1°C	17.1°C	16.6°C	20.8°C

Day	2025	2024	Min	Max
16 September	18.2°C	17.4°C	16.4°C	20.8°C
17 September	18.6°C	17.3°C	16.1°C	20.7°C
18 September	18.7°C	17.1°C	15.9°C	20.7°C
19 September	18.8°C	17.2°C	15.9°C	20.5°C
20 September	18.7°C	17.7°C	16°C	20.2°C
21 September	18.8°C	17.5°C	16°C	19.7°C
22 September	18.4°C	17.6°C	16.7°C	19.3°C
23 September	17.8°C	17.6°C	16.7°C	19.2°C
24 September	17.6°C	17.6°C	16.7°C	19.2°C
25 September	17.6°C	17.5°C	16.5°C	19.4°C
26 September	17.6°C	17.5°C	16.5°C	19.6°C
27 September		16.7°C	16.5°C	19.4°C
28 September		16.5°C	16.1°C	18.8°C
29 September		16.4°C	16.1°C	19°C
30 September		16.4°C	16°C	19°C

La Bernerie En Retz water temp chart in September

Average water temperature in La Bernerie En Retz in September over a decade

2015	2016	2017	2018	2019
17.6°C	18.5°C	17.4°C	18.2°C	18.4°C

2020	2021	2022	2023	2024
19.1°C	18.9°C	19.3°C	20.3°C	17.7°C

La Bernerie En Retz sea state in September

Chart comparing the height of waves in La Bernerie En Retz in September over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in La Bernerie En Retz in September

La Bernerie En Retz water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Temperature in neighboring cities

The nearest locations with the average water temperature in September. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Pornic	18.3°C	15.9°C	22.1°C
Tharon-Plage	18.3°C	15.9°C	22.1°C
Plage de la Source	18.3°C	15.9°C	22.1°C
Plage de la Birochere	18.3°C	15.9°C	22.1°C
Les Moutiers En Retz	18.3°C	15.9°C	22°C
Sainte-Marie-sur-Mer	18.2°C	15.9°C	22.1°C
Noeveillard	18.2°C	15.9°C	22.1°C
Plage des Sablons	18.2°C	15.9°C	22.1°C
Plage du Porteau	18.2°C	15.9°C	22.1°C
Plan d'eau Maurice Giros	18.3°C	15.9°C	22°C

La Bernerie En Retz photo gallery

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Our report for La Bernerie En Retz is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature