A partial solar eclipse, the most dramatic visible from the UK since 1999, will be visible over Wales tonight. The Moon will pass directly between the Earth and the Sun, blocking much of the Sun's light and creating a spectacle lasting almost two hours.
In Wales, the eclipse can be observed from 6.13pm to 8.06pm. The ideal vantage point is somewhere with an unobstructed view of the west-northwest horizon. The Moon will start to obscure the Sun as the eclipse reaches its peak between 7pm and 7.15pm.
How to watch live
For those who cannot get outside, a free livestream from the Royal Museums Greenwich in London begins at 6.10pm and runs until 8pm. While parts of Greenland, Iceland, Spain, northern Russia and a small area of northern Portugal will experience a total solar eclipse, those in Yorkshire will still enjoy an impressive partial eclipse, with around 90% of the Sun expected to be covered at its peak shortly before sunset.
It will be the deepest eclipse visible from the UK since August 11, 1999, when a total solar eclipse was seen from parts of Cornwall and Devon.
What is a solar eclipse?
A solar eclipse happens when the Moon moves directly between the Earth and the Sun, casting its shadow across part of the planet. Because the Moon's shadow only covers a relatively small area of the Earth's surface, a total solar eclipse can only be seen from a narrow path. Everywhere else within a much larger area experiences a partial eclipse, where only part of the Sun is covered.
There are between two and five solar eclipses every year, although total eclipses occur somewhere on Earth roughly every 18 months.
Best places to watch in Wales
With the eclipse taking place just before sunset, finding an open view towards the western horizon will give the best chance of enjoying the spectacle. Space.com has highlighted three outstanding locations in Wales for witnessing the solar eclipse. These sites feature amongst the UK's top 10 viewing spots, recognised not only for their geographical position but also for their remarkably low levels of light pollution:
- Rhossili Bay: On the very end of Swansea's Gower Peninsula, will see roughly 93.8% coverage at 7.13pm. It is part of the Dark Sky Community, which is said to "retain dark skies despite its popularity during the day".
- The Llŷn Peninsula: In Gwynedd, will see coverage of 93.3% at 7.11pm. Its remote nature and expansive views will make for perfect eclipse viewing.
- Strumble Head: In Pencaer, Pembrokeshire, will offer the finest vantage point in Wales, with 94% coverage at 7.13pm. This West Wales location boasts one of the clearest west-facing horizons, making it perfect for observing the eclipse.
How to watch safely
Anyone planning to watch the eclipse should never look directly at the Sun without proper eye protection. Ordinary sunglasses are not safe. Instead, use certified eclipse glasses or indirect viewing methods such as a pinhole projector to enjoy the event safely.
