Portugal Temperature Map

Lagos sea water temperature

Sea water: 17.0°C, warming slightly to around 18°C over the coming days

Waves: 0.8m

At 17.0 °C the water in Lagos is fresh. Fine for a dip, but the first minute bites.

Sea temperature in Lagos for the next 7 days

Day Sea water Waves
Saturday 25/07 17.0 °C 0.8 m
Sunday 26/07 17.1 °C 0.7 m
Monday 27/07 17.8 °C 0.6 m
Tuesday 28/07 17.8 °C 0.7 m
Wednesday 29/07 17.8 °C 0.6 m
Thursday 30/07 17.7 °C 0.4 m
Friday 31/07 17.8 °C 0.5 m

The water temperature shown here comes from marine forecast models with a dedicated ocean grid point for Lagos, updated every day. The table covers 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.

Lagos lies in the western Algarve, where the south coast begins to feel the open Atlantic. The water is usually a degree or two cooler than in Faro or Albufeira, but still clearly milder than on the west coast, and the sheltered coves around Ponta da Piedade calm the swell.

Frequently asked questions

When is the sea warmest in Lagos?

From August to early October. The Algarve peaks in late summer at around 22 to 24 °C, and September usually beats June comfortably. In winter the water drops to around 15 to 16 °C.

Why is the water colder than the air in Lagos?

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.

How often is this data updated?

Once a day, every morning, from marine forecast models. The page shows today's water temperature in Lagos, the outlook for seven days and the wave height for each day.

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