Swim in Cascais in september 2024What is the temperature of the sea in in september?

Average sea temperature in Cascais in september 2024.

In september, according to seasonal norms, the sea temperature in Cascais is:

Minimum: 66°F

Average: 68°F

Maximum: 71°F

Other useful seasonal weather averages in september:

  • Outside temperature: 67°F to 74°F
  • Most common weather: "Clear/Sunny"
  • The wind blows at 12.4mph
  • It rains a total of 1.2in, over 2 day(s).

Should we swim in Cascais in september?

Yes... and no. The water temperature in Cascais in september is cool

Swimming in september on the beaches of Cascais is possible but the sea water is cool. So even though the sea temperature sometimes climbs to 71°F, it can also be as low as 66°F! Note that the average is 68°F.

Note also that in september, the climate is perfect with an average outside temperature of 70°F, 1.2in of precipitation (over 2 days) and 81.31 % humidity.

Water and normal seasonal temperatures in Cascais in september

September
Average sea temperature 68°F
Minimum sea temperature 66°F
Maximum sea temperature 71°F
Average outside temperature 72°F
Maximum outside temperature 74°F
Minimum outside temperature 68°F
Wind speed 14.3mph
Wind temperature 68°F
Precipitation 1.2in
Number of days of rain 2 jour(s)
(6%)
Humidity 82%
Visibility in kilometers 9.86km
Cloud cover 18%
Our opinion cool swimming

Swim elsewhere in Portugal in september

City Average T° Max. T° Our opinion
Lisbon in september68°F71°Fcool swimming
Albufeira in september71°F73°Fpleasant swimming
Aveiro in september65°F68°Fcool swimming
Faro (Algarve) in september72°F74°Fpleasant swimming
Lagos in september71°F72°Fpleasant swimming
Porto in september65°F68°Fcool swimming
Viana do Castelo in september65°F68°Fcool swimming
Portimao in september70°F72°Fpleasant swimming
Praia de Mira in september67°F69°Fcool swimming
Sines in september69°F71°Fcool swimming
Caminha in september66°F68°Fcool swimming
Carvoeiro in september71°F73°Fpleasant swimming
Costa da Caparica in september68°F71°Fcool swimming
Foz do Arelho in september68°F70°Fcool swimming
Praia da Rocha in september71°F73°Fpleasant swimming
Ericeira in september68°F71°Fcool swimming
Estoril in september68°F71°Fcool swimming
Monte Gordo in september71°F74°Fpleasant swimming
Nazaré in september67°F70°Fcool swimming
Olhao in september71°F74°Fpleasant swimming

Swim in Portugal in september: sea temperature by city

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