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Six Flags Great Adventure crowd predictor

September 2026Jackson, New Jersey, United States

Six Flags Great Adventure is typically quiet in September, averaging 34% crowd level. The quietest day is Tue 22 Sep at 9%, and the busiest is Sun 6 Sep at 83%.

Best day left in September

Tuesday 22 Sept

September 2026 is typically quiet at Six Flags Great Adventure, averaging 34% crowd level. The busiest is Sunday 6 Sept at 83%.

9%crowds
Next bestWed 30 Sept 9%Tue 29 Sept 10%Mon 28 Sept 15%

Six Flags Great Adventure is very quiet today, at around 7% crowd levels, and very quiet tomorrow. This weekend is looking quiet.

This crowd predictor forecasts daily crowd levels for Six Flags Great Adventure through 2026.What the % means

The number is how full the park is: how long the queues run on its main rides in the middle of the day, on one scale for every park (50% is about a 17-minute queue, 70% half an hour, 90% an hour), or, where the park sells dated tickets, the share of its capacity sold if that is higher. The word beside it (Quietest to Busiest) compares the day with this park's own history, so a small park can be at its busiest on a day that is still short queues. The lower the number, the shorter the queues, so pick a quiet day and ride more.

Daily crowd levels and opening hours for Six Flags Great Adventure, September 2026
MonTueWedThuFriSatSun
142%Quietest14 min lines10:30am - 8pm242%Quietest14 min lines10:30am - 8pm342%Quietest14 min lines10:30am - 8pm444%Quieter15 min lines10:30am - 8pm571%Busier31 min lines10:30am - 10pm683%Busiest48 min lines10:30am - 10pm
780%Busiest43 min lines10:30am - 8pm8Closed9Closed10Closed11Closed1231%*TypicalEst.25 min lines10:30am - 8pm1326%*TypicalEst.24 min lines10:30am - 8pm
14Closed15Closed16Closed17Closed1817%*QuieterEst.17 min lines6pm - 11pm1930%*TypicalEst.25 min lines10:30am - 11pm2025%*TypicalEst.21 min lines10:30am - 10pm
21Closed229%*QuieterEst.14 min lines10:30am - 8pm23Closed24Closed2517%*QuieterEst.17 min lines6pm - 11pm2629%*TypicalEst.25 min lines10:30am - 11pm2725%*TypicalEst.21 min lines10:30am - 10pm
2815%*QuieterEst.16 min lines2910%*QuieterEst.14 min lines309%*QuieterEst.14 min lines
  1. Tue110:30am - 8pmSummer42%Quietest14 min lines
  2. Wed210:30am - 8pmSummer42%Quietest14 min lines
  3. Thu310:30am - 8pmSummer42%Quietest14 min lines
  4. Fri410:30am - 8pmSummer44%Quieter15 min lines
  5. Sat510:30am - 10pmSummer71%Busier31 min lines
  6. Sun610:30am - 10pmSummer83%Busiest48 min lines
  7. Mon710:30am - 8pmSummer80%Busiest43 min lines
  8. Tue8Hours unavailableSummerClosed
  9. Wed9Hours unavailableSummerClosed
  10. Thu10Hours unavailableSummerClosed
  11. Fri11Hours unavailableSummerClosed
  12. Sat1210:30am - 8pmSummer31%*Est.Typical25 min lines
  13. Sun1310:30am - 8pmSummer26%*Est.Typical24 min lines
  14. Mon14Hours unavailableClosed
  15. Tue15Hours unavailableClosed
  16. Wed16Hours unavailableClosed
  17. Thu17Hours unavailableClosed
  18. Fri186pm - 11pm17%*Est.Quieter17 min lines
  19. Sat1910:30am - 11pm30%*Est.Typical25 min lines
  20. Sun2010:30am - 10pm25%*Est.Typical21 min lines
  21. Mon21Hours unavailableClosed
  22. Tue2210:30am - 8pm9%*Est.Quieter14 min lines
  23. Wed23Hours unavailableClosed
  24. Thu24Hours unavailableClosed
  25. Fri256pm - 11pm17%*Est.Quieter17 min lines
  26. Sat2610:30am - 11pm29%*Est.Typical25 min lines
  27. Sun2710:30am - 10pm25%*Est.Typical21 min lines
  28. Mon28Hours unavailable15%*Est.Quieter16 min lines
  29. Tue29Hours unavailable10%*Est.Quieter14 min lines
  30. Wed30Hours unavailable9%*Est.Quieter14 min lines
Quietest Among the quietest days at this parkQuieter Quieter than a normal day hereTypical A normal day for this parkBusier Busier than a normal day hereBusiest Among the busiest days at this park

Lines at Six Flags Great Adventure average 22 minutes across 57 recorded days, and 49 minutes on the busiest of them. A high score means busy for this park.

Crowd levels are modelled from this park's own recorded queue times, school and public holidays, day of the week and the weather forecast, and may not always be right. Opening hours come from the park and can change. Always check the park's own site before travelling. We score every past forecast against what the queues actually did and publish the result in the crowd forecast accuracy ledger.

Seasonal events at Six Flags Great Adventure

  • Kids Boo Fest runs 12 Sep to 1 Nov 2026, on selected dates.
  • Oktoberfest runs 12 Sep to 1 Nov 2026, on selected dates.
  • Fright Fest runs 18 Sep to 1 Nov 2026, on selected dates. Evening event.
  • Holiday in the Park runs 20 Nov 2026 to 3 Jan 2027, on 22 selected dates.

Event nights are among the busiest of the season. See the crowd calendar before you book.

Dates as published by the park. Always check the park's own site before travelling.

September 2026October 2026November 2026December 2026January 2027February 2027March 2027April 2027May 2027

Frequently asked

How busy is Six Flags Great Adventure today?

Six Flags Great Adventure is predicted to be very quiet today, at around 7% crowd levels. Lower percentages mean shorter queues.

How busy will Six Flags Great Adventure be tomorrow?

Six Flags Great Adventure is predicted to be very quiet tomorrow, at around 17% crowd levels.

Is Six Flags Great Adventure busy this weekend?

This weekend Six Flags Great Adventure is looking quiet, at around 29% crowd levels on average.

When is the quietest day to visit Six Flags Great Adventure in September 2026?

Thursday 10th is predicted to be the quietest day to visit Six Flags Great Adventure in September 2026, at around 7% crowd levels.

When is Six Flags Great Adventure busiest in September 2026?

Sunday 6th is predicted to be the busiest day at Six Flags Great Adventure in September 2026, at around 83% crowd levels.

How busy is Six Flags Great Adventure in September 2026?

On average, Six Flags Great Adventure is quiet in September 2026 - around 28% crowd levels. Weekdays are usually quieter than weekends.

Is Six Flags Great Adventure busier on weekends?

Yes - Six Flags Great Adventure is typically busier at weekends than midweek in September 2026. Visit on a weekday for shorter queues.

What is the best time to visit Six Flags Great Adventure?

The best time to visit Six Flags Great Adventure is on its quietest predicted days - Thursday 10th is the quietest in September 2026 (about 7%). Arriving at opening also means the shortest waits.

Is there a crowd predictor for Six Flags Great Adventure?

Yes. This page is a free Six Flags Great Adventure crowd predictor: it forecasts how busy every day will be through 2026, on a scale where 50% is about a 17-minute queue on the main rides and 90% is about an hour. The lower the number, the shorter the queues.

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