I will travel to Tokyo, Japan in mid-April. What is the approximate temperature? thank you

Now you can wear a sweater coat at noon, and you need to wear clothes outside at night. It will be cold, and the temperature difference is a little big. I wore less today (a sweater and a windbreaker), and I still have a headache. However, all the women in the streets of Tokyo are skirts. Even a few years old girls, many people wear shorts and sandals, and many people wear sandals. People like me are from China at first sight, hehe. Take a slightly thicker night to wear, don't freeze, and bring some beautiful clothes like skirts, which will look good when taking pictures! Have fun!