Occurring every August, the Perseid meteor shower will peak in 2019 on August 12-13th (unfortunately close to full moon on 15th August), but meteors from this group can be seen in night skies for a few weeks either side of this date. For more background information about meteor showers and how to best observe them, see e.g. https://theconversation.com/explainer-why-meteors-light-up-the-night-sky-35754 .
The Perseid meteors are tiny fragments of the Comet Swift-Tuttle,entering the Earth’s atmosphere at about 58 kilometres per second (or two hundred and nine thousand kilometres per hour!).