Weather in Spain set for a dramatic change after final summer weekend

Spain is heading into what could be the last properly summery weekend of 2026, with temperatures still reaching the mid-30s in many areas before rain, storms and a cooler air mass arrive from Monday, September 28.

Forecasts from Spanish forecasters show temperatures beginning to fall over the weekend as an Atlantic trough moves towards the country. Even so, much of Spain will continue to feel more like July than late September.

Southern Spain stays hot this weekend

Andalucia is expected to keep some of the highest temperatures, with parts of the southwest potentially reaching 35ºC or more. Inland areas will be considerably hotter than the coastal resorts, although temperatures will still be high along parts of the Costa del Sol. Further east, Murcia, the Valencian Community and parts of Catalonia are also expected to stay warm, with some Mediterranean areas reaching around 30ºC to 33ºC.

🌀 Una borrasca muy profunda traerá un cambio de tiempo importante a España.

🗞️ https://t.co/CC1gkhOpRA pic.twitter.com/HCLvoV44Pr

— Meteored España (@MeteoredES) September 24, 2026

Baleares will also get another taste of summer before the weather turns more unsettled. Mallorca, Menorca and Ibiza should see warm conditions, although temperatures will not be as extreme as in some inland parts of southern Spain.

AEMET’s current warning system is already monitoring high-temperature risks across parts of the country, while the official forecast shows the weekend transition beginning before the main change arrives.

Temperatures start falling before Monday

Saturday should bring the first noticeable temperature falls in parts of northern and eastern Spain. Sunday is expected to extend the cooling trend to more areas as the Atlantic trough moves closer.

That does not mean an immediate return to cool autumn weather. Eltiempo.es forecasts that many areas will still pass 30ºC over the weekend, while parts of the southwest could remain above 35ºC. Monday is when the difference should become much easier to feel.

A colder air mass moving into the peninsula will increase atmospheric instability and push maximum temperatures down across much of Spain. By Tuesday, many areas could see daytime highs below 30ºC, with only parts of southern Extremadura, Andalucia and the Mediterranean reaching around 30ºC to 33ºC.

Rain and storms arrive from Monday

Rain is expected to become a much bigger part of the forecast from Monday, with showers and thunderstorms potentially affecting large parts of mainland Spain. Galicia, Extremadura and western Andalucia could see some locally heavy rainfall on Monday. Further east, the focus shifts towards Catalonia, Aragon and the Valencian Community on Tuesday, where heavier showers and storms are possible.

Baleares also needs watching as the more unstable weather develops. Mediterranean areas can see particularly intense downpours when warm sea temperatures combine with colder air higher up in the atmosphere.

An Atlantic front is then expected to cross the peninsula between Wednesday and Thursday, bringing rain to more areas.

Spain’s temperatures could fall towards normal levels

Wednesday should bring another step down in temperatures, with some forecasts suggesting Thursday could be the coolest point of the change. For anyone on the Costa del Sol, Costa Blanca, Costa Calida or Balearic Islands, this is unlikely to mean winter has suddenly arrived. Temperatures should still be comfortable by British standards.

The difference will be that daytime highs around 25ºC will feel very different after weeks of unusually hot weather. AEMET has already confirmed that summer 2026 was Spain’s hottest on record since at least 1869, with exceptionally high temperatures extending well beyond the usual summer period.

For now, anyone hoping to make the most of one last beach weekend has some warm weather ahead. From Monday, however, Spain’s weather map could look very different.