上旬

じょうじゅん

first third of a month; first ten days of a month

JLPT N2 common word

Meaning

n
first third of a month; first ten days of a month

Example sentences

７月の上旬は、海に行くのは早いかな？

I wonder if the first week or so of July is too early to go to the beach.
トムは１０月上旬からここにいます。

Tom has been here since early October.