The Ursa Astronomical Association says that the most active phase of Perseid meteor showers will fall on the early hours of this Wednesday, August 13, between 3 a.m. and 6 p.m.
Perseids are composed of grit and dust left over from the Comet Swift-Tuttle, Ursa says.
"As the Earth travels through the dust trail on its axis around the Sun, parts of the material will strike our atmosphere, heat up and glow, and cause optical streaks which we call shooting stars," Ursa explains. "Meteor clusters usually don't contain larger particles that could reach the Earth's surface."
A bright, near-full moon may impede the visibility of the shower.
"As many as 20-30 shooting stars may be seen in the space of an hour, less than half the normal amount," the association says.
The shooting stars seem to fly at the planet from the constellation Perseus, which can be seen quite high in the sky after sunset and remains in an East by North-Eastern area of the sky all night. However, you don't need to know the exact location of the constellation to see the meteoroids.
"Stargazers should look to the sky in the north-east," says Ursa.
Because nights in the North of the country are still quite bright, the Perseid phenomenon can only be seen south of the city of Oulu.