This data the coastal Coutances sea water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.
Water temperature in Coutances today is 19.2°C. Based on our historical data over a period of ten years, the warmest water in this day in Coutances was recorded in 2022 and was 20.5°C, and the coldest was recorded in 2015 at 17.8°C. Sea water temperature in Coutances is expected to drop to 18.4°C in the next 10 days. September average water temperature in Coutances is 18.3°C, the minimum temperature is 16.3°C, and the maximum is 21.2°C.
The swimming season in Coutances lasts from July to August. During those months, Coutances water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Coutances in winter reaches 8.9°C, in spring 11°C, in summer the average temperature rises to 18.1°C, and in autumn it is 15.7°C.
5 September 2025 |
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today temp |
19.2°C |
4 September 2025 |
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yesterday temp |
19.4°C |
The sea salinity in Coutances is 34.02‰, and the average salinity of the World Ocean is 35‰.
Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Coutances. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Coutances. Data in table shown for 6 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
1' 11" | 1' 8" | 1' 5" | 1' 3" |
0.59 m | 0.52 m | 0.44 m | 0.38 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
1' 1" | 0' 11" | 0' 9" | 0' 9" |
0.32 m | 0.27 m | 0.24 m | 0.22 m |
Data in a table show Coutances temperature today (6 September 2025). For more information and forecast for a few days, go to the weather forecast Coutances.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
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![]() | ![]() | ![]() | ![]() |
11.8°C | 11.4°C | 11.2°C | 16.3°C |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
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20.5°C | 21.8°C | 20°C | 13.6°C |
You may also be interested in other sections of our site for Coutances: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly sea temperature in Coutances. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Coutances on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve
Month | Avr | Min | Max | |
---|---|---|---|---|
January | 8.6°C | 6.2°C | 10.9°C | cold |
Sea water temperature in Coutances in January | ||||
February | 7.9°C | 5.8°C | 9.6°C | cold |
Sea water temperature in Coutances in February | ||||
March | 8.7°C | 6.2°C | 10.9°C | cold |
Sea water temperature in Coutances in March | ||||
April | 10.8°C | 6.7°C | 14.2°C | cold |
Sea water temperature in Coutances in April | ||||
May | 13.5°C | 10.4°C | 16.9°C | cold |
Sea water temperature in Coutances in May | ||||
June | 16.4°C | 12.9°C | 20.3°C | cold |
Sea water temperature in Coutances in June | ||||
July | 18.7°C | 15.7°C | 21.9°C | cold |
Sea water temperature in Coutances in July | ||||
August | 19.3°C | 17.9°C | 22°C | cold |
Sea water temperature in Coutances in August | ||||
September | 18.3°C | 16.3°C | 21.2°C | cold |
Sea water temperature in Coutances in September | ||||
October | 16°C | 13.4°C | 18.5°C | cold |
Sea water temperature in Coutances in October | ||||
November | 12.9°C | 10.6°C | 15.8°C | cold |
Sea water temperature in Coutances in November | ||||
December | 10.1°C | 7.5°C | 12.7°C | cold |
Sea water temperature in Coutances in December |