Is it warm enough to swim in Portugal in April?

April is usually a bit too early to enjoy the beaches and the outdoor pools of the hotels to the fullest. We saw some people on the beaches in Portugal on the warmest April days, but only very few of them went in the water. The seawater is still quite cold after the winter.



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It's a bit too cold for swimming. April is usually a bit too early to enjoy the beaches and the outdoor pools of the hotels to the fullest. We saw some people on the beaches in Portugal on the warmest April days, but only very few of them went in the water. The seawater is still quite cold after the winter.

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The hottest place is Portugal in April is Évora (21ºC) in the Alentejo region just to the south of Lisbon. Close behind are the Algarve (20ºC) and the beautiful Portuguese island of Madeira (20ºC).

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The high season – June to August – is the best time for the beach. During the summer months, you'll find warmer ocean temperatures, especially as you head south to the Algarve. Water temps and crowds alike peak in July and August, so plan on sharing those pretty beaches with plenty of other sunseekers.

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Sea temperatures, which range from 18 to 20°C, are still not suitable for swimming. The average daytime temperature in Lisbon is around 22°C during this month, while nights do not go below 13°C. Porto sees temperature shooting up to 20°C during the daytime, while evenings see the mercury drop to 12°C.

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Spain will be warming up nicely in April, if you pick the right spot. It's not a great time to visit the north coast and Madrid will be just 18ºC with a strong chance of rain showers. But head south and you can expect 25ºC in Seville and other parts of Andalucia with eight hours of daily sunshine.

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Mildest of all is the Algarve in the country's south, with an average temperature of 61°F (16°C) and highs of 73°F (23°C) – warm enough for T-shirts but not for swimming in the sea just yet.

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Portugal's beaches are beautiful, yes–but due to being set on the Atlantic, the water is actually much colder than many visitors might expect (yes, even in the Algarve). What is this? Spain's long Mediterranean coast, on the other hand, tends to offer much warmer water and a longer swimming season.

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If, however, you want to go swimming and sunbathing every day, and enjoy nightlife and other touristy activities, then it's best to come between May and September – October. April weather is perfect for exploring the coastline of Algarve, but not always warm enough for sunbathing and beaches.

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In Lisbon, the average daily temperature is 59°F (15°C), with highs of up to 68°F (20°C), though showers are still plentiful, with around seven days of rain. Porto is only a shade cooler, with highs of up to 64°F (18°C) and nine rainy days.

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Of course, on the Mediterranean coast and the further south you go, the heat will rise, which means the sun will be out, and you can start sunbathing on Spain's beautiful beaches and its offshore islands. Alas, in most places in Spain, the water will still be too chilly for swimming.

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The Portuguese coastline – along with the coastlines of California, South Africa, Western Australia and Peru – is subject to a phenomenon known as upwelling. In simple terms, if the wind blows parallel to the coast, then water from the bottom of the ocean (cold and rich in nutrients) rises and comes to the shoreline.

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Top 5 beaches with the hottest waters in Portugal
  1. Praia de São Torpes, Sines. The Brazilian magazine Viagem e Turismo has highlighted the temperature of the waters of this beach of Costa Alentejana. ...
  2. Praia da Manta Rota, Algarve. ...
  3. Praia da Rocha, Algarve. ...
  4. Praia da Ilha do Pessegueiro, Sines. ...
  5. Praia da Marinha, Algarve.


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In fact, the waters of Portugal's coasts are rather cold compared to those of the Mediterranean Sea. A period of mental and physical preparation is necessary to enjoy a swim in the waters of the beaches of Portugal. However, there are some places where the temperature of the water is warmer and warmer.

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