On August 12, 2026, a rare total solar eclipse will sweep across Bizkaia, affecting 56 municipalities. In most areas, totality will last only seconds. In three western towns, Lanestosa, Orduña and Valle de Karrantza, it will last just over a minute. Bizkaia has not seen such an event since 1919, and local authorities say it will not return for another hundred years. The eclipse’s broader path runs from Greenland across Iceland and the North Atlantic, then over northern Spain to the western Mediterranean. Bilbao is among the Spanish provincial capitals within the totality corridor.
The eclipse will begin in the evening, with the partial phase starting around 19:30 as the Sun nears the horizon. The Moon will gradually obscure the solar disk, reaching totality at approximately 20:30. The Sun is about 400 times larger than the Moon and roughly 400 times farther away, yet both appear similar in size in the sky. That allows the Moon to cover the Sun completely along the narrow basic path. The global maximum duration will be about 2 minutes and 18 seconds, but that figure applies at the point of greatest eclipse, far north of mainland Spain. Local totality varies with an observer’s position within the moving shadow.
Bizkaia’s position on the edge of the eclipse’s path of totality means the experience will vary significantly across the province. In the northeast, only a partial eclipse will be visible. In the central zone, which includes Bilbao and 52 other municipalities, totality will last less than a minute. Lanestosa will see one minute and five seconds of totality. Orduña will get one minute and four seconds. Valle de Karrantza will see one minute and three seconds. The shadow will progress eastward across northern and eastern Spain, with totality expected around 20:28 in León, 20:29 in Zaragoza and 20:32 in Valencia. Helioclipse’s guide to the 2026 eclipse notes that totality lasts less than two minutes in most locations along the Spanish path. Local officials in the three western towns are already considering public talks and preparations, while residents’ interest is expected to grow as the date approaches.
Experts recommend that those hoping to witness the eclipse in its full glory travel to these western municipalities. Weather could play a decisive role: low clouds or haze may obscure the view, and the Sun’s low altitude near sunset makes an unobstructed western horizon especially impressive. Astrophysicist Naiara Barrado advises choosing observation points with clear skies and possibilités. Trees and buildings can block the view, as can uneven terrain. Popular sites such as San Juan de Gaztelugatxe are already fully booked, and local authorities plan to let ticket holders stay past the usual closing time. In Getxo, where totality will last only thirteen seconds, no ticket is required. Police presence will be increased at basic coastal viewpoints to ensure safety.
Safety remains a priority for those planning to observe the eclipse. Specialists stress the importance of using eclipse glasses certified to ISO 12312-2. They are not available in pharmacies but can be purchased at astronomy shops or opticians for around €2.50. Glasses should be removed only during the brief phase of totality, when the Sun is completely covered. Put them back on immediately once any sunlight reappears. Organizers also recommend planning travel in advance to avoid traffic congestion, while encouraging residents to witness the event locally, as such a spectacle may not return within their lifetimes.
Total solar eclipses are infrequent in Spain: the last one visible in the country was in 2005, and the previous one in Bizkaia occurred more than a century ago. The phenomenon occurs when the Moon passes directly between Earth and the Sun, casting a shadow that briefly turns day into night along the path of totality. Outside that narrow corridor, observers will see a partial eclipse. For many, the August 12 event will be a once-in-a-generation chance to experience the change without leaving their home region.
