Spain prepares for first total solar eclipse in over a century on 12 August
A total solar eclipse will sweep across northern Spain on the evening of 12 August 2026, with the path of totality stretching from Galicia to the Balearic Islands. Authorities are urging viewers to use certified eye protection to avoid irreversible retinal damage.
Path and timing
On 12 August 2026, the Moon's shadow will race across the North Atlantic and sweep over northern Spain during the late afternoon and evening. The partial phase will begin around 19:30 local time, with the total eclipse reaching its maximum in Spain at approximately 20:30. The entire event will conclude near 21:20, almost exactly at sunset. The global peak of the eclipse will occur at 19:46 near Iceland, where totality will last up to two minutes and 18 seconds.
The path of totality will enter Spain through Galicia, cross Castilla y León, the Basque Country, La Rioja, Navarre, Aragon, Catalonia, and the Valencian Community, before exiting into the Mediterranean and reaching the Balearic Islands. Cities such as A Coruña, Oviedo, León, Burgos, Zaragoza, Valencia, and Palma de Mallorca lie within or very close to the central line. In Madrid, Andalusia, Extremadura, Murcia, and the Canary Islands, the eclipse will be visible only as a partial covering.
- Partial eclipse begins in Spain
- Global maximum totality near Iceland (2 min 18 sec)
- Totality peaks in Spain, sun near horizon
- Eclipse ends at sunset
A prime viewing spot: Paredes de Nava
The small Palencia municipality of Paredes de Nava has emerged as one of Europe's most sought-after observation points. Romanian eclipse chaser Catalin Beldea, who has witnessed 15 total solar eclipses across six and a half continents, will bring a group of 60 enthusiasts to the town. He selected the location after more than two months of analysing Spanish weather patterns, concluding that Palencia offers a 72 to 75 percent probability of clear skies.
It is impressive, and seeing it at eight or maybe four degrees in Palencia will be wonderful.
Beldea has spent months preparing his travel companions with educational materials, aiming to help them recognise phenomena such as the solar corona, diamond ring, Baily's beads, shadow bands, and the approaching cone of darkness. The eclipse will coincide with the Perseid meteor shower, though Beldea will not stay to observe it, as he must return to Romania for two astro shows.
The hidden danger to eyesight
Medical experts are warning that viewing the eclipse without proper protection can cause irreversible retinal damage. Elena Salobrar, a professor at the Complutense University of Madrid and researcher at the Ramón Castroviejo Ophthalmological Research Institute, explains that the eye's lens system acts like a natural magnifying glass, concentrating solar energy onto the fovea, the point of sharpest vision.
The result is devastatingly simple: an irreversible burn located in the most precious tissue of our visual system.
The danger is compounded because the retina has no pain receptors. A person can suffer a burn without feeling anything at the moment, only noticing vision loss hours later. During an eclipse, the dimming light causes the pupil to dilate, allowing more ultraviolet and infrared radiation to enter just when the observer's guard is down. The resulting condition, solar retinopathy, has no surgical or pharmacological treatment.
How to watch safely
Health authorities across Spain have issued detailed guidance. The Regional Ministry of Health of Castilla-La Mancha, through its Directorate General of Public Health, stresses that only eclipse glasses meeting the ISO 12312-2:2015 standard and bearing the CE mark should be used. The College of Opticians-Optometrists of Castilla y León has published a decalogue addressing common doubts.
Prevention remains the best tool to protect visual health.
Viewers must put on certified glasses before looking at the sun and keep them on during all partial phases. Ordinary sunglasses, smoked glass, X-rays, 3D cinema glasses, and homemade filters offer no protection. Cameras, binoculars, and telescopes require dedicated solar filters. Authorities also urge special supervision of children and the elderly.
What comes next
The 12 August eclipse is the first total solar eclipse visible from mainland Spain in more than a century. It is part of a trio of Spanish eclipses: the next will occur in August 2027, visible from Tarifa in Cádiz. Beldea already plans to return for that event.
