Portugal Temperature Map

Ericeira sea water temperature

Sea water: 19.9°C, practically unchanged all week

Waves: 1.4m

At 19.9 °C the water in Ericeira is fresh. Fine for a dip, but the first minute bites.

Sunrise: 06:34 · Sunset: 20:54 · Day length: 14h 20m

Sea temperature in Ericeira for the next 7 days

Day Sea water Waves
Monday 27/07 19.9 °C 1.4 m
Tuesday 28/07 19.9 °C 1.2 m
Wednesday 29/07 19.9 °C 1.0 m
Thursday 30/07 19.6 °C 0.9 m
Friday 31/07 19.6 °C 1.0 m
Saturday 01/08 19.9 °C 1.0 m
Sunday 02/08 20.3 °C 1.0 m

Average sea temperature in Ericeira, month by month

Month Average water
January 15.6 °C
February 15.0 °C
March 14.9 °C
April 15.9 °C
May 16.3 °C
June 17.7 °C
July 17.6 °C
August 17.2 °C
September 17.1 °C
October 18.4 °C
November 17.8 °C
December 16.2 °C

Monthly averages for 2022–2025.

This page shows the water temperature at Ericeira today and over the next seven days, so you can pick the best beach day before you go.

Sea temperature moves much more slowly than air temperature. A hot afternoon does not warm the ocean, and a windy day can cool it fast. Checking the water itself is the only reliable way to know what to expect.

Ericeira faces the open Atlantic on the west coast and is Europe's first World Surfing Reserve. Coastal upwelling keeps the water fresh even at the height of summer, often at 16 to 18 °C, and the afternoon northerly wind picks the sea up, which is why surfers go out early.

Frequently asked questions

When is the sea warmest in Ericeira?

The water is warmest in October, averaging 18.4 °C, and coldest in March at 14.9 °C. On the west coast the peak arrives late, in early autumn, because summer upwelling keeps pulling cold deep water to the surface.

Why is the water colder than the air in Ericeira?

The ocean gains and loses heat far more slowly than land, so it runs months behind the seasons. On top of that, the summer northerly wind pushes surface water offshore and draws cold deep water up in its place, which is why a heatwave on land so often coincides with a colder sea.

What can you do in the sea in Ericeira?

Surf above all: from learner waves at Foz do Lizandro and Ribeira d'Ilhas to the barrels of Coxos, reserved for those who know what they are doing. Non-surfers watch the world's best from the clifftop or keep to the more sheltered coves.

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