canary islands ultraviolet radiation warning

Canary Islands UV risk at very high to extreme levels

Health warning as UV levels soar across the islands

“Be careful, you’ll burn.” That is the message from the Canary Islands Health Department, which has warned that ultraviolet radiation risk will remain at very high to extremely high levels across the archipelago in the coming days, according to data from the State Meteorological Agency (AEMET). The regional department issued the alert via its social media channels, stressing the need to take extreme precautions when exposed to the sun and high temperatures.

Most islands at very high risk

According to the Directorate General for Public Health of the Canary Islands Health Service, almost all islands currently face a very high risk, with UV indices between 8 and 10 points. The exceptions are El Pinar on El Hierro and Vilaflor on Tenerife, where the risk reaches extremely high levels of 11 points or above. On Gran Canaria, several municipalities are also at extremely high risk: Artenara, Tejeda, Moya, Teror, Santa Brígida, Valleseco, Vega de San Mateo, Valsequillo, Ingenio, Agüimes, Santa Lucía de Tirajana, San Bartolomé de Tirajana, and Mogán.

How UV risk is measured

The ultraviolet index measures the intensity of solar radiation reaching the Earth’s surface and its potential impact on health. The higher the value, the less time it takes for skin and eye damage to occur if protective measures are not taken. At very high and extreme levels, direct sun exposure can cause burns in a short time, particularly for people with fair skin, children, the elderly, those with skin conditions, or anyone working or exercising outdoors.

Year-round risk in the Canary Islands

Health officials point out that the Canary Islands are one of the areas in Spain with the highest ultraviolet radiation throughout the year, due to their latitude, high sunshine levels, and atmospheric conditions. For this reason, sun protection should not be limited to summer or beach days. The information released by Public Health places most of the Canary Islands at very high risk for UV radiation, requiring caution, especially during the central hours of the day. In the case of El Pinar and Vilaflor, the index rises to extremely high levels, meaning recommendations must be followed with particular rigour. These values can cause skin damage even with relatively brief exposure if adequate protection is not used.

Who should take extra care

The warning applies to both residents and visitors. It is also relevant for those undertaking outdoor activities such as hiking, agricultural work, outdoor sports, excursions, school activities, or trips to beaches and pools. In light of this situation, Health officials stress that sun protection must be maintained throughout the year. UV radiation can cause damage even on cloudy days or when the breeze reduces the feeling of heat.

Key recommendations for staying safe

Among the main recommendations is the daily use of sunscreen with a sun protection factor of 50 or higher. It should be applied in sufficient quantity before exposure and reapplied every two hours, especially after sweating, swimming, or drying off with a towel. Officials also advise staying in shaded areas during the central hours of the day, wearing a wide-brimmed hat, lightweight clothing that covers the skin, and certified sunglasses with UV protection.

When the risk is highest

The hours of greatest risk are usually between late morning and early afternoon, when the sun is at its highest and UV radiation is most intense. During this period, Health officials recommend avoiding prolonged exposure, reducing strenuous outdoor physical activity, and planning frequent breaks in sheltered areas. For children, the elderly, and those with pre-existing conditions, prevention should be reinforced. Hydration is also important during episodes of heat and high sun exposure. Drinking water regularly helps reduce the risk of dehydration, although it does not alone prevent the effects of UV radiation on the skin.

Long-term health risks

Excessive exposure to UV radiation can cause sunburn, premature skin ageing, and an increased cumulative risk of skin cancer. It can also affect the eyes if appropriate glasses are not used. Specialists recommend paying attention to symptoms such as intense redness, pain, blisters, dizziness, fever, or general discomfort after sun exposure. If these occur, it is advisable to move out of the sun, cool the skin, hydrate, and consult a healthcare professional if symptoms are severe or affect vulnerable individuals.

Sun safety as a year-round habit

In the Canary Islands, sun protection is a fundamental part of public health habits, both in summer and throughout the rest of the year.

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