Indicates that it is too early to do something or that the timing/preparations are insufficient. A formal expression often used in reports or meetings.
結論を出すのは尚早だ。もっとデータが必要だ。
It's too early to draw a conclusion. We need more data.
今回の報告だけで方針を変更するのは尚早である。
Changing policy based solely on this report would be premature.
調査が不十分なため、導入を決めるのは尚早だ。
Because the survey is insufficient, it's premature to decide on implementation.