peak season
US /piːk ˈsiː.zən/
UK /piːk ˈsiː.zən/

1.
alta temporada
the time of year when a particular holiday destination or type of business is busiest and most popular
:
•
Traveling during peak season can be very expensive.
Viajar durante a alta temporada pode ser muito caro.
•
Hotels are usually fully booked during peak season.
Os hotéis geralmente estão lotados durante a alta temporada.