off season

a time of the year when the usual activity or business is reduced or not carried on

一年中日常活动减少或者商业活动不旺盛的时期

The off-season rates are less than half what they were charging during the peak season.

淡季的收费比率比旺季的一半还少。

I try to travel during the off season, because everything is so much cheaper then.

我想淡季的时候去旅游，因为那时候的东西都会便宜很多。

It's off season now, so I doubt there will be too many shops open.

现在是淡季，所以很多商铺现在不一定会营业。