The State Meteorological Agency (AEMET) has forecast a prolonged spell of intense heat across the Canary Islands this week, prompting the activation of orange-level warnings for extreme temperatures on Gran Canaria, Lanzarote, and Fuerteventura. The remaining islands have been placed under yellow alert, signalling a moderate yet noteworthy risk.
Extreme Temperatures and Calima Expected
According to AEMET’s latest bulletin, Wednesday is expected to be the peak of the heat episode, with clear or partly cloudy skies and calima—a dry, dust-laden wind from the Sahara—predominantly affecting the midlands and highlands.
Minimum night-time temperatures will climb noticeably, particularly in mountainous areas, where the increase could be substantial. Daytime maximum temperatures are also set to rise across the archipelago, with inland zones expected to reach 30 to 32°C. In some specific locations, notably in the eastern islands and the southern and western slopes of Gran Canaria, temperatures could exceed 37°C—a threshold considered hazardous to public health.
Night-time Relief Will Be Limited
AEMET also warns that night-time temperatures will offer little relief. In the mid-altitude areas of the central islands, particularly on south-facing slopes, minimum temperatures may not drop below 26°C. Such conditions are likely to disrupt sleep and increase the risk of heatstroke, especially among vulnerable groups.
Wind and Atmospheric Conditions
Winds will be light and predominantly from the northeast, with coastal breezes along the southeastern shores expected to offer slight respite in those areas. However, the agency notes that these breezes will be insufficient to offset the heat accumulation in inland zones.
A Persistent Trend of Hotter Summers
This heatwave, arriving in mid-July, reinforces the broader climatic trend of hotter, longer summers in the Canary Islands, consistent with patterns observed in recent years.
Public Health Advisory
Health authorities are urging residents and visitors to stay well hydrated, avoid direct sun exposure during peak hours, and check on those most at risk, including older adults, young children, and people with chronic illnesses.
