Partial Solar Eclipse Over London On 12 August 2026
The Royal Greenwich Observatory says up to 96% of the Sun will be obscured during the event
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London will experience a partial solar eclipse on the evening of 12 August 2026, with the Moon obscuring up to 96% of the Sun. The event will begin at 6:17 pm, reach its maximum at 7:12 pm, and conclude by 8:06 pm, according to the Royal Greenwich Observatory. This will be the most substantial eclipse visible in the UK since 1999.
Why This Eclipse Matters for Londoners
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The eclipse will create a noticeable drop in light levels and temperatures, making it feel like dusk or dawn. The Royal Greenwich Observatory said the event will be visible across the UK, though parts of Greenland, Iceland, and northern Spain will witness a total eclipse. For London residents, the partial eclipse offers a rare opportunity to observe a significant astronomical event.
Health Warnings and Safe Viewing
Despite the dimmed appearance of the Sun, health experts caution against direct viewing. The Royal College of Ophthalmologists reported that during the 1999 eclipse, 70 people experienced vision problems, with 40% of those affected having looked at the Sun for less than a minute. The reduced brightness can override the body’s natural reflex to look away, increasing the risk of retinal damage.
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Ordinary sunglasses are not sufficient protection. The Royal Greenwich Observatory advises using certified eclipse glasses or handheld solar viewers from reputable retailers. Alternative safe methods include creating a pinhole projector or using a colander to project the Sun’s image onto a sheet of paper.
What Happens Next
The next significant astronomical event for London will be a partial lunar eclipse on 28 August 2026. It will begin at 3:33 am, peak at 5:12 am, and end around 6:15 am. Unlike the solar eclipse, the lunar eclipse will be visible without protective eyewear, though a clear view of the southwest horizon will be necessary.
Residents planning to observe the solar eclipse should prepare in advance. Certified eclipse glasses are available from astronomy suppliers, and instructions for making pinhole projectors can be found online. The Royal Greenwich Observatory recommends checking the authenticity of protective equipment to avoid counterfeit products.
Questions this report answers
+What time will the solar eclipse start in London?
The partial solar eclipse will begin in London at 6:17 pm on 12 August 2026. It will reach maximum coverage at 7:12 pm and end at 8:06 pm. Residents should be prepared to observe safely during this window.
+How can I watch the eclipse safely?
Safe viewing requires certified eclipse glasses or a pinhole projector. Ordinary sunglasses are not sufficient and may increase the risk of retinal damage. The Royal Greenwich Observatory advises against direct viewing without proper protection.
+What percentage of the Sun will be covered?
The Royal Greenwich Observatory states that between 90% and 96% of the Sun will be obscured during the eclipse. This will create a noticeable dimming of light and a drop in temperature in London.
+When is the next lunar eclipse after this solar eclipse?
A partial lunar eclipse will occur on 28 August 2026, beginning at 3:33 am and peaking at 5:12 am. It will be visible without protective eyewear, though a clear view of the horizon is recommended.
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