When we see the collection of all the photons with our eyes, we average it out and call it white light. Stars hotter than the Sun also look white. It isnât until you reach a temperature of around 11,000 Kelvin before a star starts to look blue from our perspective. Most white stars are going to be hotter and more massive than our Sun. This means theyâre more luminous and use their hydrogen fuel up more quickly.
Average Weather in September at Beijing Capital International Airport China. At Beijing Capital International Airport, the month of September is characterized by rapidly falling daily high temperatures, with daily highs decreasing by 10Â°F, from 83Â°F to 73Â°F over the course of the month, and rarely exceeding 89Â°F or dropping below 65Â°F.
Weather in Cape Town in September. The average maximum daytime temperature in Cape Town in September is a comfortable 18Â°C (64Â°F). There are usually 7 hours of bright sunshine each day, which represents 62% of the 12 hours of daylight. The average sea temperature in and around Cape Town in September is 15Â°C (59Â°F). Expect 96mm (3.8 inches) of rainfall across the whole of September with 11 days with some rain falling. Maximum UV levels will be high (6 UV index) at midday when the skies are clear.