Spain's State Meteorological Agency (AEMET) has issued a rare red weather warning for the Canary Islands as a punishing heatwave brings temperatures of up to 40C. The extreme conditions began on Wednesday, July 29, and are expected to continue until at least Sunday, August 2, with forecasts suggesting the heat could persist into the following week.
The islands most affected are Gran Canaria, Tenerife and Fuerteventura, particularly inland regions and south-facing slopes. AEMET forecasts that temperatures will climb steadily through the week.
Temperature Forecast by Island
On Wednesday, heat builds across the mid-altitude regions of La Palma, Tenerife and Gran Canaria, with Gran Canaria's valleys exceeding 36C. By Thursday, southern Gran Canaria will see 36 to 38C, while southern Tenerife and inland Fuerteventura both surpass 35C.
Friday brings intense heat, with inland Fuerteventura reaching 37 to 38C and isolated parts of southern Gran Canaria peaking at 39 to 40C. The hot air mass is expected to linger through the weekend, keeping temperatures consistently above 37 to 38C across Gran Canaria and Fuerteventura.
Additional Hazards: Calima and Fire Risk
The heatwave is accompanied by a severe calima – a thick haze of Saharan dust – as cooling ocean breezes weaken. Emergency services have placed much of the region on extreme forest fire alert due to low humidity, high winds and soaring temperatures.
Overnight conditions will offer little relief, with “tropical nights” keeping temperatures above 25C in higher and mid-altitude areas. Poor air quality from Saharan dust is also expected to affect mountainous regions.
AEMET is urging residents and visitors to monitor official updates, stay well hydrated, avoid strenuous outdoor activity during peak sun hours, and take care of children, the elderly and vulnerable individuals.
