Hotter still is the core. In the sun this is thought to be 10 - 20 million degrees. These temperatures are due to the pressure caused by gravity trying to compress the star. It has to be this temperature for fusion of hydrogen to take place. Once fusion starts in a young star this adds to the temperature to ensure that fusion continues.
Weather in Lisbon in September. The average maximum daytime temperature in Lisbon in September is a warm 27Â°C (81Â°F) with low heat & humidity. There are usually 9 hours of bright sunshine each day, which represents 68% of the 12 hours of daylight. The average sea temperature in and around Lisbon in September is 19Â°C (66Â°F). Expect 26mm (1.0 inches) of rainfall across the whole of September with 6 days with some rain falling. Maximum UV levels will be high (6 UV index) at midday when the skies are clear.
Search : October is traditionally a wet, breezy and changeable month in Amsterdam, although quiet spells with sunshine by day and chilly nights crop up from time to time, and on rare occasions, warm, sunny tastes of summer crop up with temperatures exceeding 20 degrees.emperatures reach an average maximum of 14 degrees during the daytime and fall to an average of 7 degrees overnight. Rainfall averages between 80 and 90mm per September and falls on an average of 17 days, an average of approximately one day in every two.