Forecasters say the hottest conditions are expected across southern Spain, the Guadalquivir Valley and parts of the interior, where temperatures may rise significantly above seasonal averages.
Cities including Seville, Cordoba and areas of Extremadura are forecast to experience the most intense heat during the coming days.
North African Air Mass Drives Temperature Surge
The warm air mass moving across the Iberian Peninsula is being driven by subtropical conditions arriving from North Africa.
Meteorologists say the system is bringing unusually high temperatures for this stage of the season while also increasing the likelihood of hazy skies caused by suspended Saharan dust particles.
Several regions may experience uncomfortable overnight temperatures as warm air continues building across southern and central Spain.
Thunderstorms And Strong Winds Expected Later
Weather models indicate conditions could become increasingly unstable heading into the weekend as cooler Atlantic air begins interacting with the heat accumulated over the peninsula.
This collision of air masses may trigger thunderstorms, heavy localised downpours and sudden strong wind gusts in several parts of the country.
Forecasters say storm activity could develop rapidly in some inland regions during afternoon and evening hours.
Saharan Dust Could Reduce Visibility
Meteorologists are also monitoring the arrival of calima, the atmospheric phenomenon caused by Saharan dust moving northward across the Mediterranean and Iberian Peninsula.
The dust plume could reduce visibility and worsen air quality, particularly across southern and eastern parts of Spain.
Hazy skies and dusty conditions are expected to become more noticeable as the weekend approaches.
Spain Continues Facing Extreme Weather Volatility
The latest heatwave arrives as Spain continues experiencing increasingly volatile weather patterns linked to climate change, including earlier seasonal heat events, prolonged drought conditions and more frequent extreme temperature episodes.
Southern Europe has faced repeated climate-related heat records in recent years, with Spain among the countries most affected by rising temperatures and prolonged dry periods.
Authorities Issue Public Safety Advice
Authorities are advising residents and tourists to avoid prolonged sun exposure during peak afternoon hours, stay hydrated and monitor local weather alerts as conditions may change quickly over the weekend.
The unstable weather pattern may also affect travel conditions, particularly on roads during heavy storms and at airports where thunderstorms or reduced visibility can occasionally disrupt operations.
