Astronomical summer begins in the Northern Hemisphere on Sunday with the summer solstice. The sun will reach its northernmost point at 4:43 AM, marking the longest day of the year. Following the solstice, daylight hours will gradually decrease until the winter solstice. While meteorological summer commenced earlier in June, temperatures are currently rising, exceeding 30 degrees Celsius in many areas. The summer solstice occurs as the sun appears to reach its highest position in the sky relative to the Tropic of Cancer. This event signifies a shift in seasons and a peak in daylight. The changing of the seasons impacts weather patterns and daylight duration across the Northern Hemisphere.