April, July and August — Easter week and the Spanish summer holiday, when the resort hotels are full.
Quietest months
May, June, September and October — May and June weekdays, and September and October weekdays after the Spanish holidays end.
Local knowledge: Spanish park days run late. The final two hours are noticeably quieter and far more comfortable than the afternoon heat.
How this is worked out
Each day starts from how that weekday normally runs at PortAventura, learned from our own recorded wait snapshots as they accumulate, and is raised for public holidays and school-holiday periods. It is a forecast of relative busyness, not a promise: a 3 means a day that usually runs quiet for this park, not a guarantee of short lines. The further out a date sits, the more it leans on the weekday pattern alone.
Want the live picture instead? PortAventura wait times has today's queues, the hour-by-hour curve and what counts as a normal wait here. Planning a specific day? Open the planner and it will build a route around these crowd levels.