sierpień

Sierpień is August, named from sierp, sickle, because it was the month of the harvest. In dates it takes the genitive form sierpnia: dnia piętnastego sierpnia, on the fifteenth of August. The -ie- before the n drops out, so sierpnia is shorter than sierpień.

Do not mix up sierpnia with września, September, the month that follows; the first letters s and w differ clearly. The Roman numeral for August is VIII.