いいなあ

that would be nice

→ 良い
phrase Rare #28,207
that would be nice A sentence-ending expression of wishing, admiration, or envy. Depending on context, it can also mean “I wish...” or “lucky you.”
JA: 海外で暮らせたらいいなあ。
EN: I wish I could live abroad.

いいなあ

I'm jealous.

— 君の名は。 (2016)

あした晴れてくれるといいなあ

I hope it’s sunny tomorrow.

この天気が日曜日まで持てばいいなあ

I hope this weather holds up through Sunday.

いいなあ

Lucky you.

三葉いいなあ今頃ふたり一緒か

(Mitsuha) Lucky them... I wonder if they're together right now.

— 君の名は。 (2016)

いいなあ東京生活

I’m so jealous of your life in Tokyo.

— 君の名は。 (2016)

あなたのように英語が話せたらいいなあ

I wish I could speak English like you.