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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You'd think the Algarve in April is similar to March, but it can actually be lots warmer. The average temperature is about 18 degrees but during daytime it can easily reach the mid-twenties or even 25+ degrees.
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.
Go in April, May, September and October for outdoor adventures. During the shoulder season, you'll find mild, often sunny days that are ideal for hikes, bike rides and other outdoor activities. This is a great time to check out Portugal's top natural wonders without the heavy crowds.
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).
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.
The average water temperature this time of year is 17.3 degrees. ?? But definitely bring a bikini for chilling on the beach. Love being active and outdoor activities? In this case April in the Algarve is perfect!
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.
The Canary Islands (23ºC) are the hottest places in Europe in April with Gran Canaria (24ºC) and Tenerife (23ºC) feeling a little warmer than Lanzarote (22ºC). In Mainland Europe the warmest places in April are Cyprus (22ºC) and Crete (20°C).
Here, cozy sweaters, waterproofs, and warm layers come into play. Spring and fall offer milder temperatures, yet packing might require a mix of both light and warm clothes. Linen, Birkenstocks, and Raybans are my go-to outfit in Portugal, even in October.
The cost of living in Portugal is generally considered about 46 percent cheaper than in the United States. This, coupled with the country's excellent quality of life, beautiful beaches, stunning mountain ranges, reliable public transport, and rich history and culture, make it very easy to fall in love with Portugal.
Rainfall. In Lisbon rainiest months of the year are December and November during which monthly rainfall average reaches 128 mm. On the other side, driest months are August and July when the average rainfall is reduced to 4 mm per month.
Algarve is the hottest region of Portugal, with the exception of Madeira Island (an archipelago of Portugal). In the Alentejo region the average temperatures are around 16ºC (depending on if you are on the coast or in the interior) and in the Algarve region 18ºC.
The wettest month is December with an average of 117.2mm of rain. The best month to swim in the sea is in August when the average sea temperature is 21°C (70°F).