Spain's climate varies dramatically by region — far more than the common "sunny Mediterranean" image suggests. AEMET, Spain's official meteorological agency, publishes standard climatological normals (1981–2010 reference period at the stations checked) that show the interior Meseta has hot, dry summers and cold winters; the Mediterranean coast is milder with less temperature swing; the Atlantic north is cool and rainy year-round; and the Canary Islands stay warm and dry with almost no seasonal variation. Choosing where to live in Spain should account for these differences, not just proximity to the coast.
Newcomers who picture "Spain" as uniformly hot and dry are often surprised — Bilbao in the Atlantic north receives roughly 2.7x the annual rainfall of Madrid, and Santa Cruz de Tenerife in the Canaries has barely any winter/summer temperature difference compared to the sharp swings seen in Madrid or Seville. These differences materially affect heating/cooling costs, clothing needs, and lifestyle (beach season length, outdoor-activity months, etc.).
Key Facts
**Continental interior (Meseta) — Madrid (Retiro station):** annual average temperature 15.0°C; January average max/min 9.8°C / 2.7°C; July average max/min 32.1°C / 19.0°C; annual precipitation 421 mm. Hot, dry summers and cold winters — AEMET's climate atlas classifies this zone (Meseta Central, Ebro depression) as a "continentalized" Mediterranean climate with cold winters.
**Mediterranean coast — Barcelona (Aeropuerto station):** annual average temperature 16.1°C; January average max/min 13.6°C / 4.7°C; August average max/min 28.5°C / 20.2°C; annual precipitation 588 mm. Milder winters and a smaller temperature swing than the interior.
**Southern Mediterranean-influenced interior — Seville (Aeropuerto station):** annual average temperature 19.2°C; January average max/min 16.0°C / 5.7°C; July average max 36.0°C, August average min 20.4°C; annual precipitation 539 mm. One of the hottest summer climates on the Spanish mainland, with mild winters.
**Atlantic north (oceanic) — Bilbao (Aeropuerto station):** annual average temperature 14.7°C; January average max/min 13.4°C / 5.1°C; July average max 25.4°C, August average min 15.7°C; annual precipitation 1,134 mm — more than double Madrid's and nearly double Barcelona's. Rainfall is spread across the year with no pronounced dry season.
**Canary Islands (subtropical) — Santa Cruz de Tenerife station:** annual average temperature 21.5°C; January average max 21.0°C, February average min 15.3°C; August average max/min 29.0°C / 21.9°C; annual precipitation just 226 mm. Warm year-round with very little seasonal temperature swing and low rainfall concentrated in winter/early spring.
AEMET's own climate atlas notes that Spain's climate classification broadly follows the Köppen system (with a 0°C rather than −3°C threshold separating temperate and cold climate groups), and AEMET has published a specific study tracking how Köppen climate zones within Spain shifted between 1951 and 2020.
AEMET maintains a public "Atlas climático" (covering the Iberian Peninsula and Balearic Islands) and a separate atlas for the Canary Islands/Madeira/Azores archipelagos, reflecting how distinct the island climate is from the mainland.
Steps
1. Identify your climate priorities — Decide what matters most: mild winters, cooler summers, low rainfall, or minimal seasonal variation.
2. Compare the regional data above — Use the Madrid/Barcelona/Seville/Bilbao/Santa Cruz de Tenerife figures as reference points for interior, Mediterranean-coast, southern, Atlantic-north, and Canary Island conditions respectively.
3. Check AEMET directly for your specific target town — AEMET's "valores climatológicos" tool (linked from the climatic atlas page) lets you pull the same normals for a specific station near where you're considering living, rather than relying only on the regional examples above.
4. Weigh seasonal extremes against your lifestyle — Interior/southern Spain has strong summer heat (interior/Guadalquivir valley areas regularly exceed 35–40°C in summer per the Seville data above); the Atlantic north trades that heat for frequent rain; the Canaries trade seasonal variation for a much drier, more stable year-round climate.
Common Mistakes
Assuming all of Spain shares one "sunny and dry" climate — the Atlantic north (Galicia, Asturias, Cantabria, País Vasco) is an oceanic climate with high, well-distributed rainfall, closer to the UK or Ireland than to the southern coast.
Assuming the Canary Islands follow mainland seasons — their subtropical location means far smaller winter/summer swings than anywhere on the mainland.
Underestimating interior summer heat — cities on the Meseta and further south (Madrid, Seville) see July/August maximum temperatures well above 30°C, with Seville's data above reaching 36°C average July maximum.
Treating "Mediterranean coast" as one climate — rainfall and heat intensity vary substantially along that coastline; Barcelona's climate profile is noticeably milder in summer extremes than Seville's, despite both being labeled "Mediterranean."