Which climate is better between Osaka and Nagoya?

Nagoya.

Nagoya belongs to the Pacific Coast monsoon climate zone. The warm period (April to September) is hot and rainy, while the cold period (October to March) is wet, cold, dry, and rainy. The average temperature throughout the year is around 15℃. Like Osaka, the most suitable time to travel to Nagoya is spring. The climate is humid and mild, cherry blossoms are blooming everywhere in the city, and there are many famous flower-viewing spots in the surrounding areas. The summer is hot and humid, making it a famous hot spot in the country.

Osaka generally refers to Osaka City. It is a city located in the central part of Osaka Prefecture, Japan. It is one of the two cities designated by Osaka Prefecture and Osaka Prefecture.