《Sunny Day》的歌詞為：
I feel so good today
Going out in the sunshine
Looking at the blue sky
Smiling from ear to ear
I feel so good today
Going out with my friends
Running and laughing and playing
It's a sunny day for me
Let's sing a song of sunshine
Let's dance in the sunshine
Let's have fun today
It's a sunny day for me
Let's sing a song of sunshine
Let's dance in the sunshine
Let's have fun today
It's a sunny day for everyone
重複第一段歌詞...
這是一首歡快的歌曲，表達了今天心情很好，和朋友一起在陽光下玩耍的快樂心情。歌詞簡單易懂，容易讓人產生共鳴。