A Total Solar Eclipse Is Coming on August 12, 2026 — Here's What to Know

On August 12, 2026, the Moon will pass directly between the Earth and the Sun, completely blocking the Sun's light for a few minutes along a path that includes Greenland, Iceland, the Atlantic Ocean, northern Russia, Spain, and a small part of Portugal NASA. This is called a total solar eclipse. The longest period of total darkness — 2 minutes and 19 seconds — will happen just off the west coast of Iceland timeanddate.com. In Reykjavík, the eclipse will begin at 5:48 p.m. local time (15:48 UTC) Reuters.

During a total solar eclipse, the Sun's corona becomes visible. The corona is the outer layer of the Sun's atmosphere. You can't normally see it because the Sun's surface is too bright — like trying to see a flashlight beam in daylight. When the Moon blocks the Sun entirely, the corona appears as a faint, glowing ring. For this eclipse, ground observers will be able to see the corona for at most 2 minutes and 18 seconds NASA. The path where you can see the total eclipse is narrow. Western Iceland and northern Spain are among the few populated areas inside it NASA. Outside that band, a wider area will see a partial eclipse, where the Moon only covers part of the Sun NASA.

The eclipse path starts over Greenland, moves across the Atlantic toward Iceland, and then continues to northern Spain and Portugal. Western Iceland is near the spot where the eclipse lasts the longest, and the Sun will be relatively high in the sky there — about 26 degrees above the horizon. That's good for viewing because there's less air between you and the Sun, which keeps the image clearer. Northern Spain will see the eclipse later in the day when the Sun is lower, which changes the lighting and the quality of data that scientists can collect.

Scientists value total solar eclipses because the corona is usually impossible to see. Those 2 minutes and 18 seconds are a hard limit on how much data they can gather. Researchers have to prepare their equipment ahead of time and set it to capture data automatically. Some teams even fly aircraft along the Moon's shadow to stretch the viewing time, though that takes careful planning and good weather.

The broader context here is about where the eclipse happens and who controls that airspace. The path crosses several countries, each with different rules for research and for flying drones or aircraft. Greenland, which is part of Denmark, and northern Russia both present challenges because they are remote and have airspace restrictions. The part of the path in Russia crosses areas with few people and little infrastructure for large scientific teams. Iceland is easier to reach and has existing research facilities, making it a likely center for observation efforts. Spain and Portugal, with their roads and generally dry August weather in interior areas, offer the simplest setup for observers. The path briefly touching Portugal means it reaches the westernmost edge of mainland Europe.

There's a catch, though. The point where the eclipse lasts the absolute longest is over the ocean off Iceland's coast. That means the full 2 minutes and 19 seconds is only reachable by boat or plane. People watching from the ground in western Iceland will see totality slightly shorter than that.

Weather could make or break the view. Late summer in the North Atlantic often brings clouds, which could hide the corona during the critical minutes. Forecasters will be watching conditions closely in the days before the event. Spain generally has more reliable weather in August, though coastal areas can have morning fog. Ships or planes observing from the Atlantic will also have to deal with rough seas and moist air, both of which can blur the view.

This eclipse follows a path that encourages both scientific research and public interest across Europe and the North Atlantic. Earlier eclipses in the region led to coordinated efforts among European space agencies and research groups. The long path of this event, stretching from the North Atlantic to southwestern Europe, gives scientists a rare chance to study the corona and the atmosphere across different locations at the same time.