上旬 じょうじゅん
jōjun

Noun

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

Related to 中旬下旬
しち がつ上旬 じょうじゅん、海 うみ くのは はやいかな?
shichigatsuno jōjunwa umini iku nowa hayaikana
I wonder if the first week or so of July is too early to go to the beach.