Eta Aquariids in Porto

The Eta Aquariids meteor shower peaks from Porto around May 5-6, with up to 40 meteors per hour under ideal conditions. In 2026 a new moon means dark skies, and from Porto the radiant in Aquarius climbs to 22° above the east horizon around 05:15. Local best viewing window: 04:35–05:15 WEST on the peak night, about 0.7 hours of nautical twilight. Scaled to that altitude, the 40/hour headline figure works out to roughly 15 meteors an hour from Porto under a genuinely dark sky. At this latitude the sky never gets fully dark that night — the Sun only reaches 32.4° below the horizon — so only the brighter meteors will show. Tonight: widespread cloud, with little clear sky forecast.