How would you say “surprise” in German?

The German word for surprise is “Überraschung” (the verb is überraschen; Was für eine Überraschung! means “What a surprise!”). But let’s talk about something a bit more specific: English speakers often use Ich wundere mich to mean “I wonder,” but it actually means “I am surprised/puzzled/mystified/amazed/astonished”. To express the concept of “I wonder” Germans would rather use Ich frage mich:

Examples

Ich wundere mich, dass es so kalt ist. I am surprised that it’s so cold.