Portugal's Instituto Português do Mar e da Atmosfera (IPMA) has confirmed that the entire country—mainland, Madeira, and the Azores—will remain under very high UV radiation risk through at least June 15. This seasonal peak means residents face intense sun exposure during one of the year's most dangerous periods for skin health.
Why This Matters
• Health risk window: The warning covers the period when Portugal's UV Index climbs to 9–10, the threshold for very high exposure, typical from May through September.
• Skin cancer burden: Portugal records an estimated 12,000 to 13,000 new skin cancer cases annually, with melanoma accounting for 1,000 to 1,500 diagnoses each year and approximately 250 deaths nationwide.
• Children at elevated risk: Childhood sunburns are a primary predictor of malignant melanoma later in life, making protective measures for young residents critical.
The IPMA's five-level UV radiation scale classifies current conditions as "very high," one tier below the extreme rating that would trigger recommendations to avoid all outdoor exposure. For most of June, residents across Portugal should expect intense solar radiation as the sun reaches its highest angle in the sky.
Why June Is Peak Season
Portugal's UV exposure follows a predictable annual cycle. From October through April, the UV Index typically ranges between 3 and 6—moderate levels that pose manageable risk. But from May through September, the index routinely reaches 9 to 10, placing the nation in the very high category.
June represents the peak of this cycle. At Portugal's latitude, the sun is nearly overhead at midday, delivering maximum radiation intensity. This seasonal pattern is driven by the sun's angle and natural atmospheric variations, making protective measures especially important during these months.
What This Means for Residents
For the remainder of June through at least June 15, the IPMA urges a comprehensive protection strategy for anyone spending time outside:
Sunglasses with UV filter: Essential to prevent corneal damage and reduce eye health risks.
Wide-brimmed hat: Shields the face, ears, and neck, which are common sites for skin cancer.
Lightweight long-sleeve shirt: Cotton or breathable synthetic fabrics offer a physical barrier without overheating.
Broad-spectrum sunscreen: Apply SPF 30 or higher to exposed skin, reapplying every two hours and after swimming or sweating.
Shade structures: Use umbrellas, canopies, or natural cover during peak intensity hours, typically 11:00 to 16:00.
Limit children's exposure: Young skin is more vulnerable to UV damage, and early-life sunburns significantly raise melanoma risk decades later. Infants under six months should remain out of direct sunlight entirely.
In regions where conditions escalate to extreme risk, the guidance shifts: avoid outdoor activity altogether when possible, especially around solar noon.
Staying Informed and Planning Ahead
The current alert will remain in effect at least through June 15, with updates issued as conditions evolve. High pressure systems and clear skies, typical of early summer, sustain elevated UV levels, while cloud cover can temporarily lower exposure.
Residents should monitor IPMA's daily UV Index forecasts, available on its website and mobile app. Checking the index before scheduling outdoor activities—especially children's sports or family outings—can significantly reduce risk. Adjust your plans accordingly during the midday hours when radiation peaks, and stay updated as the IPMA issues new bulletins throughout the alert period.
