Eclipse, Then Perseids

August is the month Luxembourg looks up. Not because of politics or construction holidays, but because the sky has three events lined up in close succession, and the weather might actually cooperate for once.

Meteolux issued a yellow heat alert starting at midday today, running until 7am on Tuesday. Temperatures are expected to hit 33°C today and up to 36°C on Monday, with little overnight relief.[1] That is uncomfortable for sleeping but excellent for clearing clouds out of the sky. A heatwave before an eclipse week is nature's way of polishing the viewing window.

The main event arrives on August 12. A deep partial solar eclipse will see the Moon cover nearly 90% of the Sun's visible surface from Luxembourg. First contact is around 7:20pm, with maximum eclipse at approximately 8:15pm. The sky will not go dark the way it does during totality, since even a sliver of Sun produces enormous light, but the landscape may take on a slightly dim, metallic quality. A narrow solar crescent low in the evening sky is still a striking sight.[2]

Crucially, the same new Moon that creates the eclipse also produces ideal dark-sky conditions for the Perseid meteor shower, which peaks that same night. The observing window runs from roughly 1am to 4am on August 13. No moonlight means more meteors visible to the naked eye. This is one of the best Perseids opportunities in years.[3]

Then on August 28, the arrangement reverses. Earth's shadow will move across the full Moon in a partial lunar eclipse visible before dawn. First contact is at approximately 4:33am, with maximum eclipse around 6:12am, when more than nine tenths of the Moon's diameter will sit inside Earth's dark shadow. The Moon will sit only about five degrees above the horizon at that point, so a clear western view will be essential.[4]

Between these bookend events, there are smaller things worth catching. On August 9, a waning crescent Moon passes close to Mars in the eastern sky before dawn. On August 16, Venus appears near a young crescent Moon, one of the month's prettiest naked-eye conjunctions. The summer Milky Way is also well-placed through the first half of August, visible as a pale band through the southern sky from darker spots in the Éislek region.[5]

One safety note worth repeating: the solar eclipse must never be observed without proper solar viewers. Ordinary sunglasses do not protect against direct solar observation. The public event "Solar Eclipse Day 2026" at the Däichhal in Ettelbruck will distribute free eclipse glasses and offer scientific workshops.[6]

So the plan for August 12 is straightforward: watch the Sun get eaten in the evening, stay up for meteors after midnight, and set an alarm for August 28 to watch the Moon go dark before dawn. Three eclipses and a meteor shower in one month. Not bad for a small country under a big sky.