How we know: Sources are listed at the end. Weather figures are official AEMET climate normals; route and entry facts come from the cited airport and travel-guide pages. Wildly does not publish fare averages in prose; live prices are on the linked route pages.
Spain is big enough to have several climates at once, which is the first thing to understand about timing a trip. Madrid and the interior swing from cold winters to punishing summers; Barcelona and the Mediterranean coast are milder at both ends; the green north is cool and wet year-round. For the classic Madrid–Barcelona–Andalusia circuit, the best time to visit is late April through early June or mid-September through October: warm enough for terraces and beaches, cool enough for walking cities in the afternoon, and clear of the July–August crush. Winter is the value season and works well for the cities and the south.
Madrid weather by month
AEMET's 1991–2020 normals for the Retiro station in central Madrid (elevation 667 m):
| Month | Avg high | Avg low | Precipitation | |---|---|---|---| | January | 50°F (10°C) | 37°F (3°C) | 1.3 in | | February | 54°F (12°C) | 39°F (4°C) | 1.3 in | | March | 61°F (16°C) | 43°F (6°C) | 1.4 in | | April | 66°F (19°C) | 47°F (8°C) | 1.8 in | | May | 74°F (23°C) | 53°F (12°C) | 1.9 in | | June | 84°F (29°C) | 62°F (17°C) | 0.8 in | | July | 91°F (33°C) | 67°F (20°C) | 0.4 in | | August | 90°F (32°C) | 67°F (19°C) | 0.4 in | | September | 80°F (27°C) | 60°F (16°C) | 0.9 in | | October | 68°F (20°C) | 52°F (11°C) | 2.5 in | | November | 56°F (14°C) | 44°F (6°C) | 2.0 in | | December | 51°F (10°C) | 39°F (4°C) | 1.7 in |
Madrid is dry year-round (16 inches a year) but its July and August average highs above 90°F, and the same AEMET table shows the mean monthly maximum reaching 99°F in July. Wikivoyage's warning applies: the central region and the north can be cold in winter, and in summer you should avoid long stretches of direct sun and keep to the shady side of the street.
Barcelona is gentler. AEMET's airport normals show a January high of 57°F against Madrid's 50°F, an August high of 84°F against 90°F, and, unlike Madrid, the wettest months are September and October (3.4 and 3.2 inches) when autumn storms roll in off the Mediterranean. Wikivoyage notes that northern Spain, Asturias for example, gets substantial rain all year and stays green even in August.
Season by season
Late March–April (spring, Semana Santa). Holy Week, the week between Palm Sunday and Easter Sunday, brings processions across the country, most famously in Seville and Málaga. Wikivoyage advises booking well ahead because accommodation in the procession cities fills up and often nothing is left close to the date. Outside that week April is pleasant nearly everywhere.
May–early June (best overall). Madrid highs climb from 74°F to the low 80s, Barcelona's from 71°F to 78°F, and the whole country is open without the heat. Madrid's San Isidro festival on 15 May is a city-wide party. Late May and early June are the sweet spot for Andalusia before it becomes too hot to sightsee at midday.
Mid-June–August (peak, hot). The coasts, the Balearics and the northern cities are busy with Spanish and European holidaymakers; Madrid empties out and bakes. Pamplona's San Fermín runs in July and Málaga's Feria in August (Wikivoyage). If you visit in high summer, base yourself in Barcelona, San Sebastián, Galicia or the islands, and treat Madrid, Seville and Córdoba as early-morning and evening cities.
September–October (autumn shoulder). Madrid's September high of 80°F is the same as its June figure without the crowds; the Mediterranean is at its warmest for swimming. Barcelona's autumn rain is a real but brief nuisance. Rioja and Ribera del Duero harvest through September and October. By late October the interior cools quickly.
November–March (winter). Madrid averages 50–56°F by day with lows near 37–39°F, and Wikivoyage lists downhill skiing among Spain's winter options. Andalusia is mild and the best winter bet on the mainland; the Canary Islands are the true winter-sun option, described by Wikivoyage as spring-like all year. The Three Kings parade on 5 January closes the Christmas season. It is the quietest, cheapest stretch for hotels in the big cities.
Getting there from the US
Madrid–Barajas (MAD) has the broadest US network. Per the airport's destinations table, Iberia flies nonstop from Boston, Chicago–O'Hare, Dallas/Fort Worth, Los Angeles, Miami, New York–JFK, Orlando, San Juan and Washington–Dulles, with seasonal Newark and San Francisco. American flies from Charlotte, Dallas/Fort Worth, Miami, New York–JFK and Philadelphia (seasonal Chicago); Delta from Atlanta and New York–JFK (seasonal Boston); United from Newark and Washington–Dulles.
Barcelona–El Prat (BCN) is served, per its destinations table, by Level, IAG's low-cost long-haul brand, from Boston, Los Angeles, Miami and New York–JFK (seasonal San Francisco); by American from Miami and Philadelphia (seasonal Chicago, Dallas/Fort Worth and New York–JFK, with Charlotte resuming in 2027); by Delta from Atlanta and New York–JFK (seasonal Boston and Seattle); by United from Newark and Washington–Dulles (seasonal Chicago and San Francisco); and seasonally by JetBlue from Boston. Level's unbundled fares are the main reason Barcelona often prices differently from Madrid; how it compares with the other transatlantic low-cost carriers is in our budget airlines to Europe guide.
Málaga, Seville, Palma and the Canaries have no US nonstops; connect in Madrid, Barcelona or a European hub. For today's prices see JFK to Madrid, JFK to Barcelona, Miami to Madrid, Newark to Barcelona and LAX to Madrid.
When fares tend to be lowest
US–Spain demand peaks from mid-June through August and over Christmas–New Year, with Semana Santa a smaller spike. The wide-open windows are mid-January through mid-March and November, when weather keeps leisure demand down but the year-round nonstops keep flying. Late April, May, late September and October are in between: better weather than winter, less competition for seats than summer, and it is where most people should aim.
That is a demand-calendar argument, not a price forecast. With Iberia, American, Delta, United and Level all competing on New York and Miami routes, fares move with capacity, fuel and promotions as much as season. Pick a window, check what the route is actually pricing at on JFK to Madrid, and set a price alert at a fare you would happily pay. Wildly checks the route daily and emails you when it drops.
Entry requirements for US citizens
Spain is a Schengen member. US passport holders enter visa-free for up to 90 days in any 180-day period, counted across the whole Schengen Area, per Wikivoyage's Travelling around the Schengen Area; days in Portugal, France or Italy on the same trip count against the same 90. Wikivoyage also notes that from late 2026 visa-free visitors will need ETIAS pre-travel authorisation, an online application with a €7 fee for adults aged 18–70, valid for up to three years. Check the current status before departure and make sure your passport is stamped on entry and exit.
Where to go, by month
- January–March: Madrid museums and tapas bars, Seville and Granada in mild sun, the Canary Islands for beach weather, the Pyrenees for skiing.
- April–June: Everywhere; Andalusia in April–May before the heat, Semana Santa if you have booked, San Isidro in Madrid.
- July–August: Barcelona, the Costa Brava, San Sebastián and the Basque coast, Galicia, Mallorca and Menorca.
- September–October: Barcelona and the Mediterranean for warm sea, Rioja for harvest, Madrid once the heat breaks.
- November–December: Madrid and Barcelona for Christmas lights; Andalusia for the mildest mainland weather.
FAQ
What is the single best month to visit Spain? May. Madrid averages 74°F, Barcelona 71°F, Andalusia is warm but not yet hot, and the summer crowds have not arrived. October is the autumn equivalent.
How hot does Madrid get in summer? July and August average highs are 90–91°F, and the mean monthly maximum reaches 99°F, per AEMET. Plan indoor afternoons and late dinners.
Is Semana Santa a good time to visit? For the processions in Seville and Málaga, yes, if you book months out. For general sightseeing it is the most crowded and expensive week of spring.
Which airport should I fly into? Madrid has the most US nonstops and is the hub for onward flights to Andalusia and the islands. Barcelona has Level's low-cost service and is better placed for the Costa Brava and the Balearics.
Do I need a visa? No, for up to 90 days in any 180-day period across the Schengen Area. Watch for the ETIAS requirement from late 2026.
Sources
- Madrid climate normals 1991–2020 (AEMET, via Wikipedia)
- Barcelona climate normals 1991–2020 (AEMET, via Wikipedia)
- Wikivoyage: Spain — Climate, Festivals and Get in
- Wikivoyage: Travelling around the Schengen Area
- Adolfo Suárez Madrid–Barajas Airport — Airlines and destinations (Wikipedia)
- Josep Tarradellas Barcelona–El Prat Airport — Airlines and destinations (Wikipedia)