The UK is preparing for a notable celestial event on Wednesday, 12 August 2026, as a partial solar eclipse will cast a significant shadow across the nation. This will be the most extensive solar eclipse visible from the UK since 1999, with up to 95% of the sun expected to be covered by the moon. While a total solar eclipse will be observable in Greenland, Iceland, and Northern Spain, viewers across the UK and Ireland will still experience a dramatic partial spectacle.
According to experts from Royal Museums Greenwich, a solar eclipse occurs when the Earth, Moon, and Sun align, causing the Moon to pass directly in front of the Sun and block its light, casting a shadow on Earth. For those planning to witness the event, the further south-west one is located, the greater the coverage will be. Specific timings will vary by location, but the phenomenon is expected to begin in the late afternoon.
Optimal viewing locations in the UK include Cornwall, where crowds could see up to 95% coverage, with maximum obscuration anticipated around 7:16pm. Popular spots like The Lizard peninsula and Land's End are recommended. Pembrokeshire in Wales is also expected to offer excellent views, with approximately 94% coverage, particularly at Dark Sky Discovery Sites such as Poppit Sands National Park. Londoners can expect around 90% coverage, with 'first contact' between the sun and moon occurring around 6:17pm and maximum coverage by 7:12pm, making locations like Primrose Hill and Greenwich Park ideal vantage points.
Other areas will also experience significant coverage. Eryri National Park (Snowdonia) in Wales is predicted to see around 90% of the sun obscured. In Scotland, Edinburgh is set to witness a 91% eclipse. For those willing to travel further afield, Mizen Head, one of Ireland's most south-westerly points, could offer nearly 97.5% coverage.
Crucially, safe viewing practices are paramount. Looking directly at the sun, even during an eclipse, can cause permanent eye damage. Certified eclipse glasses are essential for direct observation. The Royal Astronomical Society provides guidance on safe eclipse-watching, including how to construct simple pinhole viewers from household objects. It is important to note that the next total solar eclipse visible from the UK is not anticipated until 2090, making this upcoming event a rare opportunity for many.