Heatwave Warning for the Canary Islands as Temperatures Could Exceed 40°C
The State Meteorological Agency (Aemet) issued a second special warning on Tuesday, 28 July, for a heatwave affecting the Canary Islands and large parts of the Iberian Peninsula. This warning comes into effect on Wednesday, 29 July, and is expected to last until at least Sunday, 2 August, with a likelihood of continuation into the following week.
Aemet forecasts that temperatures across the islands may reach or even exceed 40°C, particularly on the southern slopes. The heatwave is caused by a mass of warm air combined with a decrease in moisture, resulting in calima at higher altitudes. This combination of high temperatures, suspended dust, southerly winds, and very low humidity raises the risk of forest fires to extreme levels across the region.
Most Affected Areas
Gran Canaria, Fuerteventura, and Tenerife are expected to be hit hardest. The heatwave kicks off on Wednesday, particularly in mid-altitude areas of La Palma, Tenerife, and Gran Canaria, where temperatures may exceed 36°C. By Thursday, temperatures are predicted to rise to 36°C to 38°C in southern Gran Canaria, and above 35°C in southern Tenerife and Fuerteventura.
On Friday, temperatures will persist at 37°C to 38°C in Gran Canaria and Fuerteventura, with isolated peaks of up to 40°C possible. While the forecast for the weekend is less certain, extreme heat is likely to continue.
High Temperatures and Stifling Nights
Nighttime temperatures are also expected to remain high, with minimums not dropping below 25°C in mountainous areas, which could lead to oppressive nights in certain regions. The presence of calima may further degrade air quality, causing haze and discomfort, especially where dust is present.
Extreme Wildfire Risk
Aemet warns that the wildfire risk will climb to extreme levels due to the combination of high temperatures, low humidity, calima, and southerly winds. Regions with dense vegetation, particularly in forested areas and southern slopes, are at heightened risk.
Public Safety Measures
Aemet advises the public to stay updated with official forecasts and follow emergency protocols. They emphasise the importance of staying hydrated, minimising outdoor exposure during peak heat, and being especially mindful of vulnerable groups, including the elderly and those with chronic conditions.
With temperatures potentially soaring beyond 40°C, this heatwave is poised to be one of the most significant weather events affecting the Canary Islands this week.
