Photo: Lucas Martínez Farrapeira / Wikimedia Commons, CC BY-SA 2.0

Éclipse solaire partielle · 12 August 2026

Where to watch the 2026 solar eclipse in Viana do Castelo

Viana do Castelo sees one of Portugal's deepest partial eclipses — around 98.7% of the Sun covered — with the Sun 11.6° above an open Atlantic horizon, the highest of any Portuguese city in these guides.

Éclipse partielle Get certified eclipse glasses

Maximum~19:31 WESTMinho · 12 Aug 2026 · maximum eclipse

Durée~1h 51m of partial eclipseThis is the full partial eclipse from first to last contact. There is no totality here — the Sun is never completely covered, so there is no corona and no moment when it is safe to look without protection.

Hauteur du Soleil~12° above the WNW horizonhigh enough that cloud, not terrain, is the risk

Couverture98.7% (partial)Viana do Castelo is OUTSIDE the path of totality. About 98.7% of the Sun is covered at maximum — a deep partial eclipse, but not a total one. The corona never appears and the sky does not go dark.

Probabilité de ciel dégagé Often clear inland, coastal cloud possible · ≈62%Northern Portugal is usually dry in August, but the coast can sit under low cloud (the nortada) in the evening while inland stays clear.

Compte à rebours jusqu'au maximum

—jours —h —min —sec

Below: Viana's exact timings, the hilltop and coastal viewpoints, why that last 1.3% matters, and how close the path of totality really is.

Le déroulé

Quand l'éclipse a lieu

~18:33 WESTDébut de la phase partielle — première morsure dans le Soleil

~19:31 WESTPartielle — ~1h 51m of partial eclipse. Lunettes à retirer seulement en cas de totalité.

~20:39 WESTPartial ends ~20:24 WEST

The partial eclipse runs from about 18:33 to 20:24 WEST, with maximum coverage of 98.7% at around 19:31. The whole eclipse finishes before sunset at 20:39 WEST, so you are not racing the horizon here.

Où s'installer

Les meilleurs endroits pour observer

Santa Luzia sanctuary

Elevated · landmark

Panorama over coast and river mouth

The hilltop basilica above the town gives one of the great views in northern Portugal — the Lima estuary, the coastline and the open ocean, all in the right direction.

Praia do Cabedelo

Beach · open Atlantic

Unobstructed sea horizon

The beach across the river mouth faces straight out to sea with nothing in the way — the cleanest low sightline locally.

Lima estuary and the riverfront

Riverside · open

Wide open corridor

The estuary gives a broad flat outlook toward the sea, accessible on foot from the town centre.

Coastal road north toward Caminha

Coast · open

Continuous sea views

The road north offers a series of open west-facing viewpoints and beaches with fewer crowds.

East to the path of totality

The real thing

Via Bragança into Spain

The path of totality clips north-eastern Portugal and runs into Spain. From Viana that is a few hours' drive east — and at 98.7%, it is the difference between very nearly and actually.

Local astronomy societies and science centres often organise safe public viewing with filtered telescopes — worth checking closer to the date.

Plan your trip

Where to stay near the eclipse

Accommodation around the viewing area for eclipse night (11–13 Aug 2026). Compare hotels and rentals live on the map below.

La météo

Le ciel sera-t-il dégagé ?

Viana combines near-99% coverage with the highest Sun altitude in Portugal and a completely open Atlantic horizon — excellent geometry.

The Minho coast is prone to evening cloud and sea haze.

Inland and higher ground are the practical fallbacks.

Planifier la journée

Votre checklist pour le jour de l'éclipse

Certified ISO 12312-2 / CE eclipse glasses — one pair per person
Glasses stay ON for the entire eclipse — there is no safe moment here
A reasonable view west — the Sun is ~12° up, so gaps in cloud are enough
Arrive before 18:33 to catch first contact

Check the cloud forecast in the final 48 hours
Never look through a camera, phone or binoculars without a proper solar filter
Pinhole projection is a safe way for groups to watch together
If you want totality, it is northern Spain — not here

Observer en toute sécurité

Quelle que soit votre façon d'observer, faites-le en sécurité

Tous les produits Absolute Eclipse sont certifiés de façon indépendante et fabriqués dans l'UE. Il n'y a aucun moment sûr pour regarder à l'œil nu — gardez des lunettes certifiées en permanence.

Certifié ISO 12312-2
CE · UE 2016/425 EPI
Fabriqué et expédié dans l'UE

FAQ sur l'éclipse en Viana do Castelo

Will Viana do Castelo see a total solar eclipse on 12 August 2026?

No. Viana do Castelo is outside the path of totality and sees a partial eclipse, with about 98.7% of the Sun covered at maximum. That is a striking sight through eclipse glasses, but it is not totality — the corona does not appear, the sky does not go dark, and there is no moment when it is safe to look without protection. The path of totality crosses northern Spain.

What time is the eclipse in Viana do Castelo?

The partial phase begins at about 18:33 WEST and maximum — 98.7% coverage — comes at roughly 19:31 WEST. The whole eclipse finishes before sunset at 20:39 WEST, so you are not racing the horizon here.

Do I need eclipse glasses in Viana do Castelo?

Yes, for the entire eclipse without exception. This is the most important difference from a total eclipse: because the Sun is never fully covered, there is never a safe moment to look with the naked eye. Even at 98.7% coverage the remaining sliver is dangerously bright. Certified ISO 12312-2 / CE glasses stay on from start to finish.

Where should I watch from in Viana do Castelo?

With the Sun about 12° above the horizon at maximum, you have some flexibility — a break in the cloud matters more than a perfect horizon. Higher, open ground still gives the best view.

Is Viana do Castelo a good place to watch the eclipse?

It has the best geometry in Portugal — about 98.7% coverage with the Sun 11.6° above an open Atlantic horizon. The only caveats are Minho coastal cloud, and the fact that it is still not totality: the path passes to the north-east, and that last 1.3% of Sun keeps the corona hidden.

Will the weather be clear in Viana do Castelo on eclipse day?

Northern Portugal is usually dry in August, but the coast can sit under low cloud (the nortada) in the evening while inland stays clear.

Continuez d'explorer le couloir

Régions voisines depuis où observer

● Partielle

Sources : timeanddate.com · nationaleclipse.com · eclipsophile.com (météo) · Gobierno de Aragón · BBC Sky at Night. Les heures sont locales (CEST).