🟢 easy

I appear once in summer and twice in autumn, but never in winter. What am I?

Common Wrong Answers

The sun

The sun is a seasonal element that appears in summer but does not have a specific relation to the occurrences in autumn or winter.

Leaves

Leaves do appear in both summer and autumn, but they do not fit the criteria of appearing a specific number of times in relation to the seasons.

Rain

Rain can happen in all seasons, and its frequency does not match the riddle's specific mention of appearances in summer and autumn.