Water temperature in Gravelines in September

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Is it warm enough to swim in Gravelines in September? Average water temperature in Gravelines in September is 17.9°C and therefore is not suitable for comfortable swimming. The warmest sea in Gravelines in September is 20.8°C, and the coldest is 16°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Gravelines

Changes water temperature in Gravelines in September 2025, 2024

To get an accurate forecast for the water temperature in Gravelines for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Gravelines, 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	19.4°C	19.5°C	17.4°C	20.4°C
2 September	19.4°C	19.5°C	17.6°C	20.4°C
3 September	18.9°C	19.6°C	17.5°C	20.4°C
4 September	18.7°C	19.4°C	17.4°C	20.6°C
5 September	18.9°C	19.3°C	17.4°C	20.4°C
6 September	19°C	19.9°C	17.3°C	20.2°C
7 September		19.7°C	17.3°C	20.1°C
8 September		19.4°C	18°C	20.4°C
9 September		19.2°C	17.7°C	20.7°C
10 September		19.1°C	17.4°C	20.8°C
11 September		19.1°C	17.4°C	20.4°C
12 September		18.8°C	17.2°C	20.6°C
13 September		18.4°C	17.5°C	20.5°C
14 September		18.2°C	17°C	20.6°C
15 September		18.2°C	17°C	20.6°C

Day	2024	Min	Max
16 September	18.1°C	17.2°C	20.5°C
17 September	17.7°C	16.6°C	20.4°C
18 September	17.5°C	16.6°C	20.4°C
19 September	17.5°C	16.9°C	20°C
20 September	17.6°C	17.2°C	19.8°C
21 September	17.6°C	17.1°C	19.7°C
22 September	17.5°C	17.1°C	19.4°C
23 September	17.8°C	16.3°C	19.3°C
24 September	17.7°C	16.2°C	19°C
25 September	17.7°C	16.1°C	18.9°C
26 September	17.6°C	16.5°C	18.7°C
27 September	17.5°C	16.2°C	18.6°C
28 September	17.2°C	16°C	18.7°C
29 September	17.1°C	16°C	18.7°C
30 September	17.1°C	16.1°C	18.5°C

Gravelines water temp chart in September

Average water temperature in Gravelines in September over a decade

2015	2016	2017	2018	2019
16.9°C	18.7°C	17.8°C	18°C	18.2°C

2020	2021	2022	2023	2024
18.3°C	18.5°C	19.1°C	19.8°C	18.3°C

Gravelines 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
Oye-Plage	17.9°C	16°C	20.7°C
Ambleteuse	17.8°C	16°C	20.9°C
Le Portel	17.9°C	16°C	21.1°C
Dover	17.7°C	16°C	20.3°C
Nieuwpoort	17.8°C	15.7°C	21°C
Strait of Dover	17.7°C	16°C	20.1°C
St Margarets Bay	17.6°C	16°C	20.3°C
Deal	17.6°C	15.9°C	20.5°C
Sandwich Bay	17.6°C	15.9°C	20.5°C
Boulogne-sur-Mer	17.9°C	16°C	21.1°C

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Our report for Gravelines 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