Average sea temperature by month
Location
Cascais
Portugal
Best month
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Sea temperature guide — Cascais Beach
The sea temperature at Cascais Beach in November is typically around 17.2°C. The water is cool — a wetsuit is recommended for longer swims.
Jan
14.3°C
Cold
Feb
14.0°C
Cold
Mar
14.2°C
Cold
Apr
15.3°C
Cold
May
16.4°C
Cold
Jun
17.2°C
Brave
Jul
19.1°C
Brave
Aug
18.9°C
Brave
Sep
18.0°C
Brave
Oct
18.1°C
Brave
Nov
17.2°C
Brave
Dec
15.3°C
Cold
When is the best time to swim at Cascais Beach?
The warmest month at Cascais Beach is July,
with an average sea temperature of 19.1°C.
A wetsuit is recommended for extended swims.
Is the sea warm enough to swim at Cascais Beach in November?
The average sea temperature at Cascais Beach in November is 17.2°C.
The water is cool — a wetsuit is recommended for longer swims.
What is the sea temperature at Cascais Beach today?
The current sea temperature at Cascais Beach, Cascais is updated daily
using satellite observations from the Copernicus Marine Service.
Check the live reading at the top of this page for today's exact temperature.
Heading out onto the water?
Explore boat trips, surfing guides, snorkeling tours, and coastal excursions around Cascais.
See the full ocean picture.
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