What can girls talk about to make themselves happy in sunny weather?

A more cheerful girl can talk to him about some entertainment activities that are more suitable for sunny days and whether he usually wants to go. People will naturally be happier if the weather is fine.

If you are introverted, you can find some places to take a walk or something, talk about outings or tours, or what you have heard and seen.

In short, it is what it wants.