Weather in Portugal in May

If you're thinking about jetting off to Portugal in May, you're in for a treat. This month is known for mild weather and crowds, and with lots of great events. Here’s our guide to the weather in Portugal in May.

Weather in Portugal in May at a glance

• The weather in Portugal in May is generally warm and pleasant
• Average temperatures typically range from 59°F to 77°F (15°C to 25°C)
• As May marks the onset of warmer weather and longer days, tourist crowds begin to grow, but it still isn’t as busy as the summer months.
• Spring begins in May, and Portugal's landscape blooms with flowers.

What is the weather like in Portugal in May?

If Portugal is on your radar for a May getaway, you're in luck, as it's the season of blooming flowers and sunny days. Throughout the country, May brings warm temperatures and clear skies, making for an ideal setting for a visit.

Rainfall during May is generally minimal, with Portugal seeing an average of around 20-50mm of precipitation. While there might be occasional showers, sunny days predominate. Daytime temperatures typically remain comfortably warm, which is great for activities such as hiking, beach outings, and sightseeing.

In May, Portugal experiences moderate to high tourist traffic as it enters its peak tourist season. Although it's not as bustling as the later summer months, tourist numbers start to increase, particularly towards the end of the month as the weather warms up.

Overall, the weather in Portugal in May makes for a fantastic time to experience Portugal. With lots of sun, little rain, and somewhat manageable crowds, this month is for many a favorite month to travel to the country.

Average temperatures in May

In May, the weather in Portugal generally tends to be warm and sunny with occasional showers, particularly in the northern regions. This month experiences mild and pleasant temperatures, with daytime averages ranging from 64°F to 79°F (18°C to 26°C) and nighttime lows of 50°F to 64°F (10°C to 18°C). 

Porto and northern Portugal

In Porto and Northern Portugal, May offers mild and comfortable weather, with daytime temperatures ranging from approximately 64°F to 72°F (18°C to 22°C). Nighttime temperatures typically drop to around 50°F to 57°F (10°C to 14°C). Rainfall is moderate, with an average of 1.97-2.76 inches (50-70mm) throughout the month.

Lisbon and central Portugal

Lisbon and Central Portugal experience mild and sunny days in May, with daytime temperatures reaching from about 68°F to 75°F (20°C to 24°C). Evenings provide a slight chill, with temperatures ranging from 54°F to 61°F (12°C to 16°C). Rainfall remains moderate, with an average of 1.57-2.36 inches (40-60mm) over the month.

The Algarve and southern Portugal

In the southern region of Portugal, including the Algarve, May marks the beginning of summer-like weather,  with daytime averages ranging from approximately 72°F to 79°F (22°C to 26°C). Nighttime temperatures remain comfortable, typically between 57°F to 64°F (14°C to 18°C). Rainfall is minimal, with an average of 0.79-1.57 inches (20-40mm) for the month.

Madeira

The island of Madeira continues to enjoy its pleasant subtropical climate in May, with daytime temperatures ranging from about 68°F to 75°F (20°C to 24°C). Nights are pleasantly cool, with temperatures averaging between 59°F to 64°F (15°C to 18°C). Rainfall remains minimal, with an average of 0.39-0.79 inches (10-20mm) throughout the month and the island's lush landscapes are in full bloom.

Is May a good time to visit Portugal?

May in Portugal is undeniably one of the best times to visit. As spring reaches its peak, the country becomes a place of mild temperatures, blossoming landscapes, and a calendar packed with cultural happenings.

The weather is generally warm, sunny, and dry, perfect for outdoor exploration and sightseeing. The tourism season kicks off, but crowds aren't at full throttle yet, so you can take in the country without feeling like you're in a sardine can.

To make the most of your May visit to Portugal, consider packing lightweight clothing, sunscreen, and comfortable walking shoes for exploring cities and outdoor attractions. It's also advisable to book accommodations and activities in advance, especially if you plan to visit popular tourist destinations or attend specific events. Overall, May offers an ideal blend of favorable weather and fewer crowds, making it an excellent time to travel to Portugal.

What about crowds and costs?

May in Portugal kicks off the peak tourist season, so you can expect things to heat up – both in terms of weather and crowds. With the sun shining bright and the days stretching longer, it's no wonder folks flock here to soak up the beauty of Portugal's landscapes, cities, and coastline. But fair warning: popular spots can get pretty packed, especially on weekends and vacations. This is especially true towards the latter half of the month. 

May marks the start of the high season, so prices for pretty much everything –  accommodation, transportation, and dining out – tend to creep up a notch. While not as expensive as the sweltering summer season, you can expect higher costs compared to the winter months. 

If you're looking to avoid the peak-season hustle and bustle while still enjoying similar weather, consider visiting during the shoulder months of September or late October. Though there is more potential for rain, these months still have great weather and fewer crowds.

Ready to explore Portugal? Start preparing by finding out how to get there.

Festivals and events in May

As you gear up for your May excursion to Portugal, take a moment to see if any of these events are taking place during your stay. It's wise to secure your accommodations well in advance. Moreover, if you're seeking more ideas for your trip, don't miss our handpicked list of the best things to do in Portugal.

Fatima Pilgrimage (Peregrinação de Fátima)

The Fatima Pilgrimage stands as one of Portugal's largest religious gatherings, drawing millions of pilgrims to the shrine of Our Lady of Fatima in central Portugal. Devotees flock to pay homage to the Virgin Mary, visit the Basilica of Our Lady of the Rosary, and engage in Masses, processions, and prayers. It's a profoundly spiritual experience that attracts believers from around the globe seeking solace, healing, and blessings.

Madeira Flower Festival

The Madeira Flower Festival transforms the island of Madeira into a spectacle of color and fragrance. Streets of Funchal are filled with floats adorned with intricate floral arrangements, accompanied by music, dance, and traditional costumes. This vibrant festival celebrates the island's natural beauty and rich floral heritage.

Braga Romana

Transporting visitors back to ancient Roman times, Braga Romana offers historical reenactments, gladiator battles, and theatrical performances against the backdrop of Braga's Roman heritage. Exploring Roman ruins, participating in workshops, and indulging in traditional Roman cuisine immerse visitors in this captivating cultural festival.

Imaginarius International Street Theater

The streets of Santa Maria da Feira come alive with the Imaginarius International Street Theater Festival, showcasing innovative performances and artistic interventions from street artists worldwide. Acrobatics, puppetry, music, and dance create enchanting moments of wonder and exploration.

Islamic Festival

The Islamic Festival in Mértola celebrates the cultural heritage of the Alentejo region, which has deep historical ties to Islamic civilization. Visitors can explore exhibitions, workshops, and performances that showcase the rich legacy of Islamic art, architecture, and cuisine.

Serralves em Festa

Serralves em Festa at the Serralves Foundation in Porto is a marathon of contemporary arts and culture. From dusk till dawn, the park hosts performances, installations, and interactive experiences spanning music, dance, theater, and visual arts, inviting audiences to explore new horizons in contemporary culture.

Queima das Fitas

University students across Portugal bid farewell to the academic year with Queima das Fitas, a traditional celebration featuring parades, concerts, and parties. Colorful ribbons and burning effigies symbolize the end of studies, marking a rite of passage and a joyous conclusion to another year of academic achievement.

Festa das Cruzes

Celebrated across various towns and villages, with Barcelos boasting particular grandeur, the Festa das Cruzes, or Festival of the Crosses, paints streets and squares with vibrant flower-covered crosses. Processions, concerts, and traditional dances infuse the atmosphere with joy, marking not just a celebration of faith but also the arrival of spring.

Find even more options for your trip in our list of the best vacation destinations in May.

Plan your trip with our Portugal itineraries

Our Portugal itineraries are crafted to help you experience the best of the country, stress-free. Think of them as a starting point — perfect for planning, but flexible enough to adjust to your own pace and interests. After all, travel is about freedom, but a little planning goes a long way.

• Portugal itinerary 5 days: A quick trip focused on Portugal’s essentials. Expect to explore Lisbon’s vibrant streets, visit historic castles, and maybe squeeze in a coastal day trip.
• Portugal itinerary 7 days: A week in Portugal gives you time to experience Lisbon, Porto, and some wine country. You’ll get a nice mix of city sights, history, and stunning landscapes.
• Portugal itinerary 10 days: With ten days, you can enjoy Portugal’s cities, coastlines, and countryside at a relaxed pace. Expect to see Lisbon, Porto, the Algarve beaches, and charming medieval towns along the way.

Visit Portugal in other months 

Not sure when to go to Portugal? See our guide to other months:

• January: Let's start the year in Portugal! The weather's pleasant, and there aren't too many tourists around, so it's an awesome time to explore the cities and soak in the culture without all the hustle and bustle.
• February: February is pretty much like January - cool and quiet. It's perfect for leisurely strolls through Portugal's charming streets with fewer crowds to deal with.
• March: Spring is in the air, bringing with it nice temperatures and moderate crowds, especially along the coast. It's a great time to enjoy the blooming flowers and refreshing sea breezes.
• April: Things are heating up, and so is the tourist scene. But don't worry, the crowds are still manageable, and the weather is ideal for diving into Portugal's rich history and vibrant culture.
• June: Summer officially kicks off, bringing hot weather and bustling crowds to Portugal's beaches and historic landmarks. It's the perfect time for sun-soaked adventures and coastal escapades.
• July: As temperatures soar, so do the crowds, with tourists flocking to Portugal's sandy shores and popular attractions. It's a lively and energetic atmosphere, ideal for soaking up the summer sun.
• August: August brings the heat and the crowds. Portugal's beaches and tourist hotspots fill up with sun-seekers and vacationers, offering a lively but sometimes crowded experience.
• September: As summer winds down, the crowds start to thin out, but the warm weather sticks around. September is a fantastic time to visit Portugal without the hustle and bustle of peak tourist season.
• October: With mild temperatures and fewer tourists, October invites you to explore Portugal at a more relaxed pace, enjoying its natural beauty and cultural treasures without the summer rush.
• November: Fall settles in, bringing cooler temperatures and a quieter atmosphere to Portugal. It's perfect for cozying up in cafes or taking scenic drives through the countryside.
• December: The vacation spirit fills the air in Portugal, with cool weather and festive crowds adding to the charm of its cities and towns. It's a delightful time to experience the country's traditions and celebrations.