A Total Solar Eclipse Is Coming in August 2026 — Here's What to Know

On August 12, 2026, a total solar eclipse will cross parts of the Northern Hemisphere. During a total solar eclipse, the Moon passes directly between the Earth and the Sun and blocks the Sun completely, turning day into brief darkness. The areas where this full blockage — called "totality" — is visible include Greenland, Iceland, northern Russia, the Atlantic Ocean, Spain, and a small corner of Portugal, according to NASA.

The European Space Agency (ESA) independently confirmed the eclipse path over Greenland, Iceland, and Spain in an August 8 statement. The U.S. National Solar Observatory (NSO) lists the same set of land masses on its eclipse map.

NASA's Scientific Visualization Studio (SVS) published an animation showing the Moon's shadow starting in far northern Siberia, near the North Pole, and traveling south through the Arctic and North Atlantic oceans before reaching populated land. A separate SVS global map details the path of totality, confirming the shadow's path over Iceland and Spain. On August 11, the SVS also released a high-resolution simulated true-color Earth visualization of the eclipse crossing the Northern Hemisphere.

For a small, remote region in northern Russia, totality will occur at local midday, per NASA's eclipse page. Western Iceland and northern Spain are among the few easy-to-reach locations that will experience totality directly, as noted in NASA Earth Observatory coverage.

NASA-funded science teams will chase the eclipse along the path, setting up instruments over Greenland, Iceland, and Spain, the agency confirmed on July 27. The effort is part of NASA's heliophysics research, which studies the Sun and its effects on space. Specific details about the instruments and scientific targets have not been released in the available sources.

Cloud cover is the biggest challenge for anyone hoping to watch the eclipse. Satellite measurements show that the Iceland location along the eclipse path has about 65 percent cloudiness, consistent with ground station observations, according to Eclipsophile. The Icelandic Meteorological Office's eclipse-day forecast called for light easterly or northeasterly winds with cloudy skies and showers, with more persistent rain expected toward evening before easing. One upside: totality will sit roughly 25 degrees above the southwest horizon in Iceland — high enough in the sky that a gap in the clouds could be enough to see it, as noted by eclipse2026.is.

The Moon's shadow on August 12 will start near the North Pole and travel south through the Arctic before reaching the North Atlantic. That path limits the places on land where you can see totality. Greenland is in the path, but much of its totality zone sits over remote ice sheet terrain. Iceland's western coast, including the Reykjanes Peninsula region, offers the most accessible viewing in the North Atlantic. The path then crosses open ocean before reaching the Iberian Peninsula, where northern Spain and the extreme northeastern tip of Portugal fall under the shadow.

Multiple space agencies and observatories are paying close attention to this event because total solar eclipses have unique scientific value. During totality, the Sun's outer atmosphere — called the corona — becomes visible. Think of it like the glow around a streetlight that you can only see when the light itself is blocked. Scientists normally use special instruments called coronagraphs to create an artificial block, but those instruments also block part of the corona closest to the Sun. An eclipse lets them see that hidden inner region. NASA's chase teams, deploying across three land masses, can also stretch the viewing time beyond what a single location offers.

For anyone deciding where to go, the cloud-cover data and Icelandic forecast offer a realistic picture. Iceland's 65 percent cloudiness is not a dealbreaker but a probability. The 25-degree altitude of totality means even a partial break in the clouds could be enough. Northern Spain typically has better odds of clear skies in August, though specific cloud-cover statistics for the Spanish part of the path are not included in the available sources.

The broader context is that even with modern satellites that monitor the Sun around the clock, a total solar eclipse still gives scientists something they cannot get any other way: a clear, unobstructed view of the Sun's innermost corona. That is why space agencies continue to invest in these short, hard-to-reach events rather than relying on technology alone.