First of all, Sommer is the German word for Summer. Well, not so hard to guess, right? I just thought it would be fun to substitute the O with a lime, therefore I went for the German word instead of choosing the English one. Well, in Spanish Summer is 'verano', maybe I will do another graphic with verano next.
Enjoy your Sommertag! This my friends, is the German word for Summer day. As you see, German and English are quite similar!