43°C heatwave to peak Sunday to Tuesday as second major episode hits Costa del Sol to Costa Blanca

The second major heatwave of the summer is about to take hold across much of Spain from Sunday, July 5, bringing brand new orange and yellow weather alerts for dangerous temperatures and pushing the thermometer higher through the opening days of the week. Forecasters expect the strongest conditions between Sunday and Tuesday before any gradual easing later.

New alerts issued for Sunday and Monday

The State Meteorological Agency has activated special warnings for this new scorcher of an episode. Orange alerts will cover the regions of Cordoba, Huelva, Jaen and Sevilla from Sunday into Monday, with interior zones potentially reaching 42ºC or 43ºC. Yellow warnings will apply in Cadiz and Granada during the same window, active mainly from 1pm to 9pm. These alerts warn of high risks in central hours across affected provinces and so suggest getting what needs to be done early in the morning.

Malaga province falls outside the the most dangerous special warnings, yet still sees temperatures climb a great deal too. Malaga City is forecast to rise from around 33ºC on Monday toward 38ºC by the end of the coming week, as seen during the first intense heatwave of summer 2026 in Malaga, Granada and Murcia. Interior areas such as Pizarra, an hour’s drive from the coast, may reach 41ºC by midweek, while Alora nears 40ºC. Overnight readings will stay uncomfortably high between 22ºC and 25ºC.

Costa del Sol locations are going to experience a clear upward trend from Sunday, with daytime values building through the first half of the week. Costa Tropical areas are under yellow alerts in Granada province are set for maxima near 39ºC in spots such as the Genil basin. Almeria faces similarly stifling conditions without current formal warnings from the government, as outlined in earlier forecasts for the 2026 summer heatwave season.

Conditions intensify in Murcia, Costa Blanca and Mallorca

Murcia will see continued heat, particularly in interior valleys where readings may climb toward 39ºC to 41ºC during the peak window through until Tuesday. Costa Blanca areas face comparable pressure, especially inland sections of the Valencian Community. Coastal stretches may benefit from some sea-breeze moderation during the day, but overall warmth continues with limited overnight cooling across the region.

Mallorca will encounter rising heat from Sunday along with yellow alerts from AEMET, the state meteorological service, with inland areas expected to exceed 37ºC and in parts approaching 40ºC at times. The island sits under the influence of the same warm air mass, or ‘heat dome’ affecting the wider Mediterranean, bringing progressive daytime increases and persistently hot night-time temperatures and humidity.

National picture and outlook

Major river valleys across Spain, including the Ebro, Tajo, Guadiana and Guadalquivir, face the strongest readings, with 39ºC to 43ºC possible until Tuesday in places such as Badajoz, Cordoba and Zaragoza. Northern regions including parts of Galicia and the eastern Cantabrian coast will also warm noticeably. The Canary Islands are due to see highs above 35ºC, reaching locally near 40ºC in Gran Canaria.

The fiery episode originates from a high-pressure ridge, typical of July, combined with a low-pressure system positioned to the west, favouring a very dry and warm air mass. Forecasters are suggesting some uncertainty over exact duration, though temperatures are likely to bring a little relief gradually from Wednesday onwards while remaining elevated across southern and central areas for much of the week. It goes without saying, but with prolonged heat and dryness, the risk of wildfire is becoming ever greater.

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