Solar Eclipse of August 12, 2026: How and Where to Observe in France

On August 12, 2026, France will experience one of the most remarkable partial solar eclipses of the century. As the day comes to an end, the Moon will obscure up to 99.5% of the solar disk in the Southwest, creating an unusual twilight effect in the summer sky. From north to south, all French citizens will gaze at the same celestial event, though their views will differ significantly based on geographic location.

99.5 % Maximum obscuration in Biarritz

92.2 % Obscuration in Paris

20h14-20h27 Maximum time varies by region

90.3 % Minimum obscuration in France (Lille)

What Will Be Visible from France?

Metropolitan France will not fall within the path of totality for this eclipse. However, the level of obscuration will be exceptional, ranging from 90.3% in Lille to approximately 99.5% in Biarritz. The coverage of the solar disk will be higher in the southern regions, which are closer to the trajectory over Spain, while it will be lower in the north. In Paris, the peak obscuration will occur around 20h17, with 92.1% of the Sun covered, whereas in Toulouse, the phenomenon will reach its maximum around 20h26 with 97.8%, and in Biarritz around 20h27 with 99.4%. These statistics translate into a striking visual reality, as the sky will grow very dark in the Southwest, producing an unusual twilight light in the midst of summer, with the Sun appearing as a very thin crescent.

Obscuration Percentages by Region

The obscuration rates vary significantly: Toulouse will see 97.8% (maximum around 20h26), Bordeaux 97.5% (around 20h28), Marseille 96.3% (around 20h24), Paris 92.2% (around 20h17), and Lille 90.3% (around 20h13). Additionally, the entire Atlantic coast is particularly well-positioned, with an eclipse of 96% in Brest and nearly similar in Lorient.

What’s the Difference Between 99% and 100% Obscuration?

The difference is stark. Even at 99.5% obscuration, a portion of the solar disk remains visible, and ambient light persists. In contrast, during a total eclipse (100%), darkness descends abruptly, temperatures drop, and the solar corona becomes visible. This marks a literal transition from day to night.

A Twilight Eclipse

This will be a twilight eclipse: the maximum will occur between 19h30 and 20h30 (summer time), when the Sun is low on the western horizon, differing from the midday eclipse of 1999. For Toulouse, the Sun will be just over 5° above the horizon, while Paris will only see it at 7.6°. Therefore, as the eclipse occurs during sunset, it is advisable to find a clear view towards the west. Any obstruction from terrain or buildings could hinder the observation.

Precise Timing for the Solar Eclipse on August 12, 2026

In France, the partial phase will begin around 19h18 and conclude around 21h16, with variations by region. The maximum obscuration will be reached between approximately 20h14 and 20h27, observed earlier in the north and northeast, then a few minutes later towards the Atlantic, the southwest, and the Pyrenees. The Moon will start to obscure the Sun at the first apparent contact around 19h15 (French time), gradually covering it until the maximum around 20h15. In Nantes, the eclipse will start around 19h25, peak around 20h20, and end shortly after 21h, just as the Sun is nearly set. It is important to add two hours to Coordinated Universal Time (UTC) for local time in metropolitan France. Moreover, all mentioned times correspond to French summer time.

The Path of Totality: Iceland and Northern Spain

The path of totality will traverse the Arctic Ocean, Greenland, Iceland, the Atlantic Ocean, and then reach Portugal and northern Spain, extending to the island of Mallorca. On August 12, 2026, a total solar eclipse will cross Greenland, Iceland, northern Siberia, the Atlantic Ocean, Spain, and a small part of Portugal. In Europe, the path of totality will cover Iceland, Spain, and Portugal, with a maximum duration of totality lasting 2 minutes and 18 seconds. However, for most locations within the totality path, the Sun will be entirely eclipsed for less than two minutes.

Where to Go to Experience Totality?

For those wishing to witness the full experience, this path of totality designates a corridor where the solar disk will be completely obscured by the Moon, visible in an area spanning from Bilbao to Madrid, also including Zaragoza, Burgos, and La Coruña. Furthermore, totality in Ferrol, Spain, will last 1 minute and 33 seconds, with the Sun positioned just under 12° above the horizon. Notably, this will be the first total solar eclipse visible in Iceland since June 30, 1954, and the only one occurring in the 21st century. However, forecasts suggest that the best chances for clear skies lie in Portugal and Spain.

Weather Uncertainty

The success of the observation will largely depend on the weather. Long-term climate forecasts indicate that northern France (Paris, Lille) has a high risk of cloud cover (55 to 70%), while the south (Toulouse, Marseille, Montpellier) offers better odds for clear skies. It is highly recommended to monitor weather reports in the days leading up to the event.

How to Safely Observe the Solar Eclipse

Eye protection is paramount. As long as any part of the solar disk remains visible, viewing it with the naked eye can cause solar retinopathy, a painless retinal burn at the moment of viewing that can lead to permanent black spots in one’s field of vision.

Certified Glasses Required

The glasses must comply with the ISO 12312-2:2015 standard, suitable for direct solar observation without magnification. Solar safety glasses must be thousands of times darker and meet the international ISO 12312-2 standard. Additionally, these glasses should have usage instructions in French on the back, along with the manufacturing date, batch number, origin, manufacturer, and distributor in France. With high opacity, they reduce sunlight brightness by 99.999% and completely block harmful infrared and ultraviolet radiation. However, regular sunglasses, even very dark ones, are inadequate. One must use special eclipse glasses or certified solar filters compliant with ISO 12312-2. Eclipse glasses are NOT ordinary sunglasses; they must be thousands of times darker.

Indirect Observation Methods

For those without certified glasses, indirect methods are available. One can observe the Sun indirectly using the pinhole projection technique, which projects the Sun's image. Additionally, if near trees with leaves, one can look at the shadows cast by the leaves to see small crescents of sunlight. However, one should NOT look at the Sun through a camera lens, telescope, or binoculars while wearing eclipse glasses, as concentrated solar rays can burn the filter and cause severe eye injuries.

Photographing the Eclipse: Practical Tips

To capture this exceptional phenomenon, appropriate equipment is essential. Amateur photographers need suitable gear (solar filter, tripod) to photograph the eclipse. Special filters must be attached to lenses and telescopes to protect the equipment. Smartphones can also be used but require appropriate protection. Filter options for smartphones exist, allowing for eclipse photography without damaging the sensor. A tripod will stabilize shots and help achieve sharp images despite the low light towards the end of the day. The low position of the Sun on the horizon offers unique photographic opportunities. In Spain, since the eclipse will be visible at sunset, observers may catch the "diamond ring" effect just as it touches the horizon, a phenomenon occurring at the end of totality with a bright ring around the silhouette of the Moon.

A Historic Astronomical Event

This will be the most significant astronomical event in Western Europe since the total eclipse of August 11, 1999, marking a quarter-century of waiting for those who remember those few minutes of total darkness. The last total solar eclipse observed in metropolitan France was on August 11, 1999, with the next one not occurring until September 3, 2081. Therefore, for the vast majority of people living today, this is a once-in-a-lifetime opportunity. Additionally, this will be the 16th total eclipse of the 21st century (and the 19th eclipse where the Moon's shadow touches the Earth, including hybrid eclipses), belonging to the Saros 126 series. This event occurs within a privileged astronomical context for Europe. However, the next total eclipse visible in Spain will take place less than a year later, on August 2, 2027. To prepare for this observation and discover other celestial events of the year, check our astronomical calendar.

Prepare for Your Observation Now

ISO 12312-2 certified glasses will be in high demand as August 12, 2026 approaches. It is advisable to acquire them now from opticians, pharmacies, or specialized retailers. Identify a viewing location with a perfectly clear western horizon, free from buildings or terrain obstructions. The Southwest offers the best obscuration conditions, but weather remains the decisive factor. The Paris Observatory has developed the ÉclipSEOP application, which provides precise timings and obscuration percentages for any location in France.