Does Spain's sunny image survive heat, drought and floods?

Key rules

• Heat: The south and interior get the worst heat waves, and the Mediterranean coast has very hot nights.
• Floods: The Mediterranean coast faces the highest flash-flood risk, mostly in autumn.
• Water restrictions: Local water authorities set watering and pool rules, and they change with reservoir levels.
• Energy certificate: Check it before you rent or buy, because many older homes sit in the weakest bands.

The short answer

Yes, Spain is sunny. But the sun now comes with more extreme heat, drought, wildfire and flash-flood risk. Many homes are poorly built for both heat and cold. The north is also much wetter than the postcard image suggests. None of this means "don't come". It means choose your region and your home with these risks in mind.

Heat: hotter, longer summers

Spain has warmed by roughly 1.3 to 1.7 °C since pre-industrial times. Heat waves have become more frequent, longer and more intense since the 1980s. There are roughly three times as many per year, and summers are about three weeks longer. Summers 2022 and 2025 were among the hottest on record.

The most exposed areas are:

• The Guadalquivir valley (Seville, Córdoba, Jaén), Extremadura and Murcia.
• The Ebro valley and inland Valencia.
• Madrid and La Mancha.
• The Balearic Islands and the Mediterranean coast, where the problem is hot "tropical nights" that stay above 20 °C.

If you are heat-sensitive, think hard before choosing the south or the interior. Plan to stay indoors in the afternoon in July and August.

Drought and wildfire

Drought has hit Catalonia, Andalusia (Guadalquivir, Almería, Málaga) and the Balearic and Canary Islands. Barcelona's area had water restrictions during an emergency in 2023-2024, lifted in 2025 after rains. Heavy rain in 2025 and early 2026 refilled many reservoirs, but this can change quickly.

Rules on watering gardens, filling pools and farm use are set locally by regional water authorities and river basin bodies. If you want a garden or a pool, ask the local authority what applies before you buy or rent.

Wildfire risk is highest in Galicia, Castilla y León, Extremadura, Catalonia, the Valencia region and Andalusia. In 2025 more than 350,000 hectares burned, the worst year on record for Spain, mostly in August in León, Ourense and Zamora, with several deaths. If a home is near forest or scrub, ask about evacuation routes and local fire rules.

Autumn floods

Flash floods come mainly from a DANA, a pool of cold air high in the atmosphere that produces torrential rain. They hit the Mediterranean coast from Catalonia to Andalusia, mostly in autumn, and also the Balearic Islands. The Valencia region, Murcia, Almería and Alicante are particularly exposed.

On 29 October 2024 a DANA brought over 400 mm of rain in hours at Chiva, in Valencia province. It killed 229 people, 224 of them in Valencia province, Spain's deadliest flood in decades. Towns in l'Horta Sud such as Paiporta, Catarroja and Sedaví were hit hardest.

Before you rent or buy near the coast, check whether the home sits in a flood-prone area, close to a dry riverbed (barranco) or in a basement or ground-floor unit. In autumn, follow official weather alerts and avoid driving through flooded roads.

Homes: built for a milder idea of Spain

About half of Spanish homes were built before 1980, before the first thermal building rules. Many have poor insulation, single glazing or old frames, and thin walls. Most homes with an energy certificate sit in the lower bands (E, F and G). Homes built since 2006 are generally better.

• Cooling: air conditioning is common in the south and on the coast, but far less so in the north.
• Heating: central heating is less common than in northern Europe. Many homes use electric radiators, gas boilers, split units or portable heaters.
• Cold and damp: these are a known problem, and energy poverty affects a notable share of households.

Check the energy certificate before you rent or buy. Ask about the glazing, the orientation, and how the home is heated and cooled. Winter bills can surprise you.

The wet north

Galicia, Asturias, Cantabria and the Basque Country are green because they get lots of rain. Expect mild, damp, cloudy weather and cold, damp homes without good heating. The north has fewer air conditioners, but heat waves reach it too.

What to do

1. Pick a region by its worst season, not its best.
2. Check the energy certificate and how the home is cooled and heated.
3. Check flood and fire exposure for the exact address.
4. Ask the local authority about water restrictions.

The questions below cover where the worst heat and flood risks are, and how to judge a home.

Frequently asked questions

Which parts of Spain get the worst summer heat?

The worst summer heat is in the Guadalquivir valley (Seville, Córdoba, Jaén), Extremadura, Murcia, the Ebro valley, inland Valencia, Madrid and La Mancha. The Balearic Islands and the Mediterranean coast have hot, tropical nights. Summers are about 3 weeks longer than in the 1980s.

Where is the flash-flood risk highest, and when?

The flash-flood risk is highest on the Mediterranean coast from Catalonia to Andalusia, mainly in autumn. The Valencia region, Murcia, Almería, Alicante and the Balearic Islands are particularly exposed. The 29 October 2024 event in Valencia province killed 229 people.

Can drought still mean water restrictions where I live?

Yes, restrictions can return in drought-hit areas, and regional water authorities set them locally. Catalonia, Andalusia and the Balearic and Canary Islands were hardest hit. Rules can cover garden watering and pool filling, so ask your town hall before planning a garden or pool.

How can I tell if a home will cope with heat and cold?

Check the energy certificate before you rent or buy, because many older homes rate E, F or G. About half of homes predate 1980 and often have poor insulation and single glazing.