Water temperature in Primelin in September

Is it warm enough to swim in Primelin in September? Average water temperature in Primelin in September is 16.4°C and therefore is not suitable for comfortable swimming. The warmest sea in Primelin in September is 18.9°C, and the coldest is 14.5°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Primelin

Changes water temperature in Primelin in September 2025, 2024

To get an accurate forecast for the water temperature in Primelin for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Primelin, 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	16.8°C	16.7°C	15.3°C	17.8°C
2 September	16.5°C	17.4°C	15.6°C	17.6°C
3 September	16.6°C	17.5°C	15.8°C	17.7°C
4 September	16.8°C	17°C	15.6°C	17.8°C
5 September	16.7°C	16.8°C	15.4°C	18.4°C
6 September		16.8°C	15.4°C	18.9°C
7 September		16.7°C	15.2°C	18.6°C
8 September		16.7°C	15.4°C	18.3°C
9 September		15.9°C	15.2°C	18.1°C
10 September		16.2°C	15.2°C	18.4°C
11 September		16°C	15.5°C	18.5°C
12 September		15.5°C	15.2°C	18.2°C
13 September		15.5°C	15.1°C	17.7°C
14 September		15.2°C	15°C	18.3°C
15 September		15.3°C	14.9°C	18.3°C

Day	2024	Min	Max
16 September	15.2°C	14.8°C	17.9°C
17 September	15.5°C	14.7°C	18.3°C
18 September	15.4°C	14.5°C	18.3°C
19 September	15.5°C	14.6°C	18.2°C
20 September	15.6°C	14.7°C	18°C
21 September	15.7°C	14.5°C	18.2°C
22 September	15.7°C	14.8°C	18.1°C
23 September	15.5°C	14.8°C	17.9°C
24 September	15.6°C	14.8°C	17.8°C
25 September	15.6°C	15°C	17.8°C
26 September	15.5°C	15°C	17.8°C
27 September	14.7°C	14.7°C	17.9°C
28 September	14.7°C	14.7°C	17.6°C
29 September	14.6°C	14.6°C	17.9°C
30 September	14.7°C	14.7°C	18°C

Average water temperature in Primelin in September over a decade

2015	2016	2017	2018	2019
16.2°C	16.9°C	15.5°C	15.4°C	15.6°C

2020	2021	2022	2023	2024
17.1°C	17.7°C	16.8°C	17.6°C	15.8°C

Primelin sea state in September

Chart comparing the height of waves in Primelin 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.

Primelin 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
Sein Island	16°C	14.3°C	18.1°C
Douarnenez	16.5°C	14.6°C	19.6°C
Crozon	16.5°C	14.5°C	20.1°C
Morgat	16.5°C	14.5°C	20.1°C
Plonevez-Porzay	16.6°C	14.6°C	19.8°C
Sainte-Anne la Palud	16.6°C	14.6°C	19.8°C
Treboul	16.6°C	14.6°C	19.8°C
Telgruc-sur-Mer	16.6°C	14.6°C	20°C
Camaret Sur Mer	16.2°C	14.4°C	19.1°C
Plage de Pentrez	16.6°C	14.6°C	20°C

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Our report for Primelin 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