Heatwave Hits the Canary Islands: What You Need to Know

Spain’s State Meteorological Agency (AEMET) has issued a second special warning regarding an impending heatwave that is set to impact the Canary Islands. Starting Wednesday, July 29, temperatures are expected to soar, with some areas potentially exceeding 40°C. This extreme heat is predicted to last until at least Sunday, August 2, with a high likelihood of continued hot conditions into the following week.

Areas Most Affected

The islands that are likely to experience the most intense heat include Gran Canaria, Fuerteventura, and Tenerife. A combination of soaring temperatures, calima (Saharan dust), low humidity, and southerly winds will create an extreme risk of wildfires. Residents and visitors in these areas should be particularly cautious as the heatwave unfolds.

Temperature Trends Throughout the Week

Wednesday, July 29

The heatwave kicks off with significant temperature increases across mid-altitude areas of La Palma, Tenerife, and Gran Canaria. Valleys in Gran Canaria are expected to see temperatures exceeding 36°C, setting the stage for a sweltering week ahead.

Thursday, July 30

By Thursday, the heat will spread across the archipelago. Southern mid-altitude areas and mountain regions of Gran Canaria are forecasted to reach between 36°C and 38°C. Similarly, southern Tenerife and inland Fuerteventura are expected to climb above 35°C, making it crucial for residents to take precautions.

Friday, July 31

The heat remains relentless on Friday, with temperatures reaching 37°C to 38°C across much of Gran Canaria and inland Fuerteventura. AEMET has warned that isolated areas in southern Gran Canaria could see temperatures peak between 39°C and 40°C, pushing the limits of comfort and safety.

Weekend Forecast: August 1-2

While forecasts for the weekend remain somewhat uncertain, current models suggest that the extreme heat will persist. Temperatures are expected to once again exceed 37°C and 38°C in southern Gran Canaria and the interior of Fuerteventura, making it essential for everyone to stay vigilant.

The Impact of Calima and Tropical Nights

The heatwave will be accompanied by a gradual lowering of the marine cloud layer, allowing calima to spread across higher elevations. This phenomenon, combined with dry air and southerly winds, significantly increases the risk of wildfires across the Canary Islands.

Moreover, nights are expected to remain unusually hot, offering little respite from the daytime heat. Minimum temperatures are projected to stay above 25°C in many mid-altitude and highland areas, leading to what are known as “tropical nights.” These conditions can exacerbate heat stress, particularly for vulnerable populations such as the elderly and those with pre-existing health conditions.

Air Quality Concerns

The accumulation of Saharan dust is likely to reduce air quality, especially in elevated inland areas. This can pose additional health risks, particularly for individuals with respiratory issues. Authorities are closely monitoring the situation and will provide updates as necessary.

Safety Recommendations

In light of the extreme weather conditions, authorities are urging both residents and visitors to take several precautions:

• Stay Hydrated: Drink plenty of water throughout the day to avoid dehydration.
• Avoid Prolonged Sun Exposure: Limit outdoor activities during the hottest hours, typically between 12 PM and 4 PM.
• Monitor Weather Updates: Keep an eye on official weather reports and heed any emergency advice as the heatwave develops.

By staying informed and taking necessary precautions, everyone can navigate this challenging weather situation more safely.