Algarve in May: How Warm It Is and What's Open

Weather in May

The official normals for Faro Airport, the reference station for the region, give 23.5°C (74°F) as the average daily maximum and 15.0°C (59°F) as the average daily minimum for May. Rain averages 26.2mm across 3.8 rain days, so most days are dry. Sunshine duration is not published on the IPMA station sheet, so treat generic 'hours of sun per day' claims with suspicion.

Those are averages, not a forecast. In practice May gives you a run of clear, warm days punctuated by the occasional grey spell or a windy afternoon. Rainfall drops off sharply as you move towards June.

Where you are matters. Lagos and Sagres on the west end catch more wind and feel cooler on the beach, while Tavira and the eastern Algarve run slightly warmer and drier. Inland, Silves and Monchique are a degree or two hotter by afternoon but cooler after dark, which matters if you plan an evening outdoors.

Is it warm enough?

For walking, sightseeing and eating outside, May is close to ideal. A daytime high of 23.5°C (74°F) is comfortable in a T-shirt, and the 15.0°C (59°F) night-time low means you can sit out after dinner without a jacket most evenings.

For families with young children, May works well: the heat is not punishing, beaches are quieter than in summer, and the risk of a washout is low. For sunbathers who want to lie on the sand all day and swim comfortably, the sea is still cool, and you should think of June or later.

If you want reliable tanning weather and long, hot evenings, May will feel a touch short of summer. If you are happy with a mix of beach mornings and afternoon walks, it delivers. The best time to visit Algarve page sets out how the months compare if you are still undecided.

Early vs late May

Early May is closer to April: highs in the low 20s, a greater chance of a shower, and the sea at its coldest. By the last week, you are edging towards June's 26.8°C (80°F) highs, with drier days and warmer evenings. If you have flexibility, the second half of the month is the better bet.

That difference also shows in how busy it feels. May tourism builds steadily as the month goes on, and popular resorts in the central Algarve are noticeably busier by the final week as UK half term arrives. Earlier in the month, the region is calmer.

The sea in May

The Atlantic off the Algarve warms slowly. On the south coast, the water is cool in May and most people will find it bracing rather than comfortable for a long swim. North of Sagres, on the Costa Vicentina, it is colder and rougher, and surfers wear wetsuits year-round.

This is why May beach days tend to be about lying on the sand rather than swimming. If the sea is central to your trip, June onwards is the smarter choice, as set out in our guide to Algarve in June.

What is open

May is when the Algarve shakes off winter. Beach bars and restaurants in the resort towns reopen, boat and kayak operators run trips to the caves around Benagil and Praia da Marinha, and the eastern Algarve's ferry-served beaches on the Ria Formosa islands come back into service.

Not everything is at full summer pace. Some smaller places in the quieter villages still keep reduced hours, and a few seasonal businesses open only towards the end of the month. If a particular restaurant or boat trip is essential to your plan, check current opening days and times directly before you build a day around it.

The larger resorts — Lagos, Albufeira, Vilamoura and Praia da Rocha — are fully awake by May, with restaurants, bars and marinas running normal hours. It is the smaller villages where you notice the difference.

Things to do

The cliff walks are the star of May. The Seven Hanging Valleys trail between Carvoeiro and Praia da Marinha gives you limestone arches, hidden coves and the Benagil Cave from above, all in weather that makes the ups and downs pleasant rather than punishing.

Tavira and the Ria Formosa suit a slower day. The town's tiled facades, river bridges and quiet squares are made for wandering, and the lagoon islands are reached by ferry. Bird activity is high in May, and the salt marshes and sandbanks are at their most alive.

Inland, Silves has one of the region's biggest Moorish castles, and Loulé's covered market is at its best on a Saturday morning. Both are easy day trips from the coast and comfortably cool enough to explore on foot in May.

Monchique and the Serra de Monchique offer wooded hills, cork oaks and small villages, plus views down to the coast from Foía. It is a good May option when you want altitude and shade rather than beach time.

For a full list of excursions, see things to do in Algarve in May, which covers boat trips, markets and inland drives across the region.

Food in season

May is a good month for fish and seafood. Grilled fish, octopus salad and cataplana appear on menus across the region, and the coastal towns between Tavira and Lagos are the places to eat them. Spring vegetables and strawberries turn up in markets, and the Loulé and Quarteira markets are at their most rewarding.

The inland towns tend to offer heartier dishes: pork, game and mountain sausages in Monchique, and honey and medronho liqueur in the hill villages. Portions are generous, and lunch is often the better-value meal.

Crowds and prices

May is busy but not peak season. The UK half term at the end of the month brings a surge, especially in the central Algarve resorts. Outside that window, beaches and restaurants are comfortable, and popular sights are easier to enjoy.

Prices are moderate by Algarve standards: higher than in April, lower than in July and August. Accommodation and flights are usually cheaper than in summer. Book ahead for half term and for popular boat trips.

If you are comparing months, our guide to the best time to visit the Algarve sets out the trade-offs between spring, summer and autumn.

Honest drawbacks

The main drawback is the sea: cool, and on the west coast cold and rough. If swimming is a priority, May will disappoint. The second is the wind, particularly on the Atlantic-facing Costa Vicentina, where a sunny day can still feel chilly on an exposed beach.

Evenings can be cool, especially early in the month, and a rain spell is possible, though usually short. Some smaller businesses are still on reduced hours, and a few seasonal places do not open until late May or June. Inland, the heat builds towards June, which can make afternoon walking in the hills less comfortable.

Algarve in May or June?

June is hotter and drier: 26.8°C (80°F) highs and just 5.1mm of rain. The sea is warmer, the days longer, and the region is in full summer mode. It is the better choice if you want a proper beach holiday with swimming.

May is gentler and cheaper, with fewer crowds and more comfortable conditions for walking and sightseeing. If you want the Algarve without the summer intensity, May wins. If you want heat and sea, June does.

May or April in the Algarve?

April is cooler and wetter than May. The normals give 20.7°C (69°F) highs, 12.4°C (53°F) nights and 39.0mm of rain over 5.3 rain days. May improves on all three: warmer days, milder nights and less rain. If you are choosing between them, May is the more reliable month for outdoor plans.

April has its own appeal: greener hills, fewer visitors and lower prices. If you want spring flowers and quiet trails, see The Algarve in April for what that month offers. Otherwise, May is the safer bet.

The verdict

May is one of the best months to visit the Algarve if you want warmth without heat, dry days without guaranteed baking, and a region that is open but not yet crowded. It suits walkers, sightseers, couples and families with young children. It does not suit anyone whose main goal is swimming in warm sea or lying on a beach in 30°C heat — for that, wait for June.

If you are still weighing up where to go, our guide to where is warm in Europe in May compares the Algarve with other Southern European destinations. Among Europe's warmest spots in April, the Algarve sits near the top, which is why the region rewards anyone who can travel as early as late spring. For a broader view across the year, the Algarve in spring guide covers March to May.

Plan Your Visit

Book the second half of May if you can: it is drier, warmer and closer to summer, though the half-term week is busier. Early May is quieter and cheaper but more changeable. Either way, pack for warm days and cool evenings, and do not expect to swim comfortably in the sea.

For official travel advice, check the UK government's Portugal travel page once before you go. For everything else — where to walk, what to eat, and which month fits your trip — use the guides linked above.