Spain faces several days with ultraviolet radiation at very high levels, with levels between 8 and 10 in many parts of the country. This situation requires extreme caution outdoors, especially at midday, when the sun is beating down and the risk of sunburn increases.
From the Cantabrian Sea to Andalusia and Levante, high values are expected in Santander, Benidorm, Marbella, Ronda, Albacete, Móstoles, Martos, Úbeda, Baena and A Coruña. Temperatures range from 29–30 ºC in coastal areas to 38–39 ºC in inland areas., creating a cocktail that increases thermal stress and the impact of the sun on the skin and eyes.
Very high UV radiation: an overview

The predominant pattern these days is that of clear skies or with few clouds, which makes it easier for radiation to reach the surface. Even with thin clouds, the UV index can remain high, so it's best not to be overconfident.
Most of the capitals analyzed present values in the range of very high risk (8–10), a scale on which sunburns can occur in less than 20–30 minutes without protection. It is recommended to limit exposure during peak hours and use broad-spectrum sunscreen.
Cities and figures: where it is most pressing

Santander
With stable weather and a pleasant atmosphere, the index is at UV 8Thermometers reading between 19–25 ºC and a NE breeze of 18–27 km/h do not prevent the radiation from being intense; It is advisable to wear a cap, glasses and sunscreen.
Benidorm
Between cloudy and clear, the sun gains ground and the index increases UV 8 to 9 on successive days. Maximum temperatures range between 29–30 ºC, with a muggy feeling (31–32 ºC) and winds from the E and S of 14–31 km/h, typical high-risk conditions on the beach.
Marbella
Bright days with temperatures around 29–30 ºC and moderate humidity. The UV index varies between 9 and 10, so it is recommended to seek shade during the central hours and reapply sunscreen frequently.
Ronda
The hot interior presents peaks of 33–36 ºC and low humidity (around 25–31%). The index remains at 9–10, and under these conditions, the skin can burn quickly if proper protection is not used.
Albacete
Clear days or with high clouds, maximum temperatures of 36–37 ºC and E/SE wind of 17–32 km/h. Radiation is located in UV 9, so it is recommended to wear a t-shirt, hat, glasses and high SPF cream.

Móstoles
Severe heat scenario with highs of 38–39 ºC and warm nights (minimums close to 23 ºC). The index reaches UV 9It is best to avoid exertion at midday and prioritize shade and hydration.
Martos
Chain of clear days with peaks of 37–38 ºC and radiation in UV 9–10The main recommendation is to limit exposure between 12:00 and 17:00 and remember to apply sunscreen to your lips and ears.
Ubeda
With a dry environment, maximum temperatures of 37 ° C and gusts from the E reaching up to 41 km/h, without reducing the solar risk. The index remains at UV 9, so eye protection (category 3–4) is essential.
Baena
With partly clear skies and temperatures around 36–37 ºC, the radiation level remains at UV 9It is important to consider reflective surfaces such as light-colored pavements, which increase the dose received.
A Coruna
The evolution towards more temperate values (24–29 ºC) does not prevent the index from remaining at UV 8Even if the wind is blowing from the north and there are scattered clouds, it is advisable to continue using sunscreen on the coast and along coastal walks.
Essential sun protection tips

with levels of UV 8–10Self-protection measures are essential. It's not enough to simply "not feel the heat": ultraviolet radiation is not perceived and can damage skin and eyes very quickly.
- Use broad spectrum (UVA/UVB) sunscreen with SPF 50+ and reapply every 2 hours or after sweating or bathing.
- dress up with long sleeve clothing lightweight and dense fabrics or UPF-certified ones; add a wide-brimmed hat.
- Usa approved glasses with UV400 filter and category 3–4; eyes may also burn.
- Avoid direct sunlight between 12:00 and 17:00 hrs.; seek shade and go out early or at dusk.
- Hydrate frequently and pay attention special attention to children, older adults, and people with very light skin or who use photosensitizing medication.
Remember that on the beach and in the mountains, water, sand and light surfaces reflect radiation, increasing the effective dose. Additionally, at higher altitudes, UV radiation increases by approximately 10–12% for every 1.000 meters, so you should adjust your protection accordingly.

When is radiation most dangerous?

The risk increases when the sun is high in the sky, usually between mid-morning and mid-afternoon. Even if there is some cloudiness, UV rays can penetrate and keep the index at dangerous levels. For better protection, you can also consult the weather alerts related to extreme conditions.
Wind, cloudiness and humidity: this is how they can deceive you

Many cities present moderate breezes (Santander 18–27 km/h; Benidorm 14–31 km/h; A Coruña with gusts up to 39 km/h). Although the wind helps cool the temperature, it does not reduce radiation, so your skin can still get burned.
The intermittent clouds, as in Benidorm or Baena, reduce visible light but do not guarantee lower UV radiation; with frequent clearings, the index remains at 8–9. High humidity increases the heat, while low humidity, as in Ronda, promote dehydration. In both cases, sun protection remains a priority.
With very high UV indices Distributed along the coast and inland, and with high temperatures in many areas, it's a good idea to reorganize schedules, cover your skin, and consistently use protection. This way, everyday or outdoor activities will be safer, even on bright sunny days.