The State Meteorological Agency (Aemet) has issued a special warning for a heatwave hitting the Canary Islands, expected to peak from Wednesday, 29 July. This weather event will be driven by warm, subsiding air linked to a high-pressure system, resulting in low humidity, rising temperatures, and the presence of calima at mid to high altitudes.
The heatwave is anticipated to last until at least Sunday, 2 August, with the potential for an extension into the following week.
### Temperatures Exceeding 38°C
Temperatures will noticeably increase on Wednesday, particularly in mid-altitude areas of La Palma, Tenerife, and Gran Canaria, where conditions will be intense. Gran Canaria could see valley temperatures surpass 37°C from the outset of the warning.
By Thursday, 30 July, heat will further escalate across the eastern islands, with maximum temperatures of 37°C to 38°C expected across inland and mid-altitude areas of Gran Canaria. The hottest spots will be in valleys and areas less affected by trade winds.
On Fuerteventura, similar temperatures are anticipated from Friday, 31 July, particularly in inland regions. Meanwhile, southern slopes and mid-altitude areas on La Palma and Tenerife will also experience high temperatures, particularly during the day.
### Calima, Warm Nights, and Extreme Fire Risk
Aemet warns of suspended dust or calima affecting the islands, driven by decreased moisture levels and hot, dry air. This will create hazy conditions at mid to high altitudes, and the combination of dust, heat, and low humidity will make the weather feel oppressive.
Night-time temperatures are projected to remain unusually high, leading to sweltering nights across much of the archipelago. Many areas may offer little relief from the heat after sunset, especially inland.
The risk of forest fires will rise sharply during this period, reaching extreme levels in some locations. High temperatures and a significant drop in humidity, combined with strong southerly winds, will complicate fire prevention and response efforts.
### Authorities Urge Caution
Authorities advise the public to take extra precautions while outdoors, especially during peak heat hours. People should avoid actions that could heighten fire risks and comply with official guidance as the weather develops.
Vulnerable groups, such as the elderly, children, and those with chronic health issues, should take particular care. This heatwave is shaping up to be one of the most significant weather events of the week in the Canary Islands, posing hazards from high temperatures, calima, low humidity, warm nights, and extreme fire risk.
