The Perseid meteor shower is set to peak on the nights of August 12th to 13th, 2025. This annual event, caused by Earth passing through debris left by Comet 109P/Swift-Tuttle, typically offers up to 100 meteors per hour. However, this year's display will be significantly impacted by a bright, nearly full moon, expected to be around 83% illuminated. This lunar glare will likely obscure fainter meteors, reducing the visible count, though brighter meteors, known as fireballs, should still be observable.
To enhance viewing, experts recommend finding the darkest possible location away from city lights and allowing eyes 20-30 minutes to adjust. Focusing on the darkest expanse of the sky, ideally away from direct moonlight, will improve the experience. The early morning hours before dawn are generally considered prime viewing times as the radiant point is highest. For photography, manual camera settings, a tripod, and a wide-angle lens are advised, using the "500 rule" for exposure to prevent star trails. Despite the moonlight, the Perseids' inherent brightness means spectacular meteors, including fireballs, are still expected.
Historically, the Perseids have been observed since 36 AD and are poetically known as the "tears of St. Lawrence," commemorating his martyrdom on August 10th. Comet 109P/Swift-Tuttle, discovered in 1862 by Lewis Swift and Horace Tuttle, has an orbital period of approximately 133 years, with its last close approach to Earth in 1992. While the moonlight presents a challenge, the shower's inherent beauty promises a memorable visual treat for patient observers.