AEMET forecasts stable weather across Spain on 22 September. Temperatures may exceed 35 degrees in southwestern Galicia, the southern Atlantic areas and the Canary Islands.
Temperatures may rise above 35 degrees in parts of Spain on 22 September as high pressure keeps most of the country under clear skies. The sharpest heat will affect southwestern Galicia, the southern Atlantic side of the peninsula and the Canary Islands. The weather will stay settled, but temperatures will remain unusually high for this time of year. AEMET says the persistent anticyclone, limited cloud cover and almost complete lack of rain will drive strong daytime warming.
The contrast will be clearest between the hot south and the cooler northern coast. AEMET expects maximum temperatures to fall slightly across the northern half of the peninsula. The drop will be more noticeable along the Galician coast and in eastern Catalonia. Temperatures will continue to rise in the south and the Balearic Islands, with the southeast set for significant increases.
The average temperature of summer 2026 on the Iberian Peninsula reached 24.5°C, 2.4°C above the 1991–2020 average and higher than the previous record set in 2025.
Clear skies will not tell the whole story. The main pattern will be stable and sunny, but several coastal areas may see low cloud, mist or isolated fog in the morning.
The northern coast of Galicia and Asturias will have cloudy periods and a chance of coastal haze. Morning low cloud and isolated fog may also form around the Strait of Gibraltar and the Alboran Sea. A brief drizzle is possible near the Strait.
The Canary Islands will have high cloud and probably a layer of dust haze at altitude. Lanzarote and Fuerteventura could see a weak shower, with an occasional thunderstorm. These local conditions will interrupt an otherwise dry and settled forecast across much of the country.
The 22 September forecast formed part of a broader heat episode rather than an isolated warm day. AEMET-related outlooks for 16–22 September indicated possible peaks of 35–40°C, particularly in southern and some inland areas, while official temperature warnings were reported in several autonomous communities, including Andalusia, Aragon, Castile and León, Castile-La Mancha, Catalonia, Extremadura, Madrid and the Canary Islands.
Night-time temperatures are expected to change little across mainland Spain. The Canary Islands should see a slight rise. Most of the heat will be felt in the afternoon rather than through a broad change in overnight temperatures.
Wind will create another regional divide. Moderate easterly winds are forecast over the Alboran Sea, with strong intervals in the Strait. Northerly winds will dominate the Canary Islands, the Ampurdán, northern parts of the Balearic Islands and the Galician coast. Inland areas will mainly have light winds from the north and east.
For residents and visitors, the message is simple. Clear weather will dominate, but the most exposed southern and Atlantic locations should prepare for unusually high afternoon temperatures. The forecast does not describe a nationwide episode of extreme weather. It does show a marked regional split, with heat building in the south while northern coasts see cooler temperatures and more cloud. Reports citing official warnings also point to increased heat-related attention in several autonomous communities. Local forecasts will matter more than the national average.
The weather picture for 22 September has two main features: stable conditions across most of Spain and exceptional warmth in selected regions. AEMET expects the hottest conditions in southwestern Galicia, the southern Atlantic areas and the Canary Islands. Fog, cloud, wind and possible showers will stay focused on specific coastal zones. The record-hot summer and earlier September forecasts show that this is part of a wider period of unusual warmth, not simply a sunny day. Spain will be broadly calm, but temperatures will vary sharply by region.
