What should I wear to travel to Osaka, Japan in April?

The average temperature in Osaka in April 1 1℃~20℃. The average temperature during the day is 20 degrees Celsius. It is recommended to wear short suits, T-shirts, thin jeans, casual clothes, professional suits and other comfortable clothes made of single-layer cotton and linen fabrics. The average temperature at night is 1 1℃. It is recommended to wear warm clothes such as suits, jackets, windbreakers, casual clothes, jackets, suits and thin sweaters. The cities with the highest daily average temperature in Osaka in April are Fukuoka (20℃), Nagoya (Aichi Prefecture) (20℃) and Naha (Okinawa) (24℃). The cities with the lowest average daily temperature in Osaka in April are Fukuoka (1 1℃), Nagoya (Aichi Prefecture) (10℃) and Naha (Okinawa) (19℃).