Cold and White
Every year in Russia. A phenomenon happens in early summer which is called “White Nights”. It is not unique to St. Petersburg but in no other northern city have they received such poetic and literary acclaim. From late May to early July the nights are bright in St. Petersburg, with the brightest period, the White Nights, normally lasting from June 11th to July 2nd. St. Petersburg is the world's most northern city with a population over 1 million, and its stands at such a high latitude that the sun does not descend below the horizon enough for the sky to grow dark. In fact night becomes curiously indistinguishable from day, so much so that the authorities never need to turn the city's streetlights on!
About 8 million travelers travel to St. Petersburg every year and most of them choose summer just for watching this unexplainable unique phenomenon. So that summers in Russia and specially in St. Petersburg are too populated and this is the reason why the hotels are expensive consumedly!
What are the effects of “White Nights” on Russian native people?
Although “White Nights” in St. Petersburg are phenomenal and absorb a lot of tourists from all around the world, but you cannot ignore the negative effects on native people. Daylight and less of darkness at nights makes people sleepless. By the way travelers try to go walking at nights in solitude streets of St. Petersburg.