A series on Netflix will be released in summer 2020. Since I don't find it sensible to pay Netflix so long just to watch this series, I would cancel Netflix and then create a new Netflix account in the summer with the same email. Is that possible?
Why a new account at all?
You don't have to create a new account.
Just cancel and re-subscribe to Netflix if you want to use it. If you do so, the progress of series / films and your list will also be retained.
Because I just want to see this series in summer. Should I pay there all the time?
You don't have to create a new account.
The account remains even after the subscription is canceled
You can then log in as normal with your old account