Swim in Fort-Mahon-Plage in september 2024What is the temperature of the sea in in september?

Average sea temperature in Fort-Mahon-Plage in september 2024.

In september, according to seasonal norms, the sea temperature in Fort-Mahon-Plage is:

Minimum: 63°F

Average: 65°F

Maximum: 67°F

Other useful seasonal weather averages in september:

  • Outside temperature: 58°F to 66°F
  • Most common weather: "Clear/Sunny"
  • The wind blows at 8.1mph
  • It rains a total of 3.5in, over 6 day(s).

Should we swim in Fort-Mahon-Plage in september?

Yes... and no. The water temperature in Fort-Mahon-Plage in september is cool

Swimming in september on the beaches of Fort-Mahon-Plage is possible but the sea water is cool. So even though the sea temperature sometimes climbs to 67°F, it can also be as low as 63°F! Note that the average is 65°F.

Note also that in september, the climate is good with an average outside temperature of 62°F, 3.5in of precipitation (over 6 days) and 85.5 % humidity.

Water and normal seasonal temperatures in Fort-Mahon-Plage in september

September
Average sea temperature 65°F
Minimum sea temperature 63°F
Maximum sea temperature 67°F
Average outside temperature 63°F
Maximum outside temperature 67°F
Minimum outside temperature 58°F
Wind speed 13.7mph
Wind temperature 56°F
Precipitation 3.5in
Number of days of rain 6 jour(s)
(19%)
Humidity 86%
Visibility in kilometers 9.36km
Cloud cover 41%
Our opinion cool swimming

Swim elsewhere in Picardy in september

City Average T° Max. T° Our opinion
Somme Bay in september65°F67°Fcool swimming
Quend Plage in september65°F67°Fcool swimming
Saint-Valery-sur-Somme in september65°F67°Fcool swimming

Swim in Picardy in september: sea temperature by city

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