Six Flags Great Adventure
crowd calendar.
Tell us when you're visiting and we'll show you the quietest day in your window. The app turns it into an hour-by-hour plan for every day. Built from real wait-time data, updated nightly.
Quietest months we've measured, 2024-2026: July and June, especially Wednesdays. Busiest: October and April.
Updated September 22, 2026. Forecast days refresh nightly.
Past days show measured crowd levels or historical estimates; upcoming days show forecasts. A dash means no crowd estimate, so check park hours before choosing that date.
Quietest months we've measured, 2024-2026: July and June, especially Wednesdays. Busiest: October and April.
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How busy is Six Flags Great Adventure in 2026?
Six Flags Great Adventure doesn't stay one speed all year. Measured across 2024-2026, July and June run quietest, averaging 3.1 out of 10, while October and April push 5.6. Saturdays typically run 1.8 levels above Wednesdays, the quietest day of the week.
Event days move the needle too. Fright Fest days average level 2.3, so check the grid before you commit to one.
Six Flags Great Adventure crowds by month, 2026
Twelve months, one glance. Months still to come are forecasts, partial months count measured days only, and the grid up top has every individual day.
| Month | Avg level | What that means |
|---|---|---|
| January | – | No data |
| February | – | No data |
| March | – | No data |
| April | 4.8 / 10 | Moderate (partial) |
| May | 3.8 / 10 | Light |
| June | 3.0 / 10 | Light |
| July | 2.8 / 10 | Light |
| August | 3.6 / 10 | Light |
| September | 2.8 / 10 | Light (partial) |
| October | 5.8 / 10 | Moderate (forecast) |
| November | – | No data |
| December | – | No data |
Best days to visit Six Flags Great Adventure in 2026
62% of Six Flags Great Adventure's measured days across 2024-2026 land at level 4 or below. Wednesdays are the most reliable quiet pick. If your dates are flexible, aim for July; if they're locked, the grid above shows exactly where your window falls. Want receipts? See how August 23 played out at level 7, or what a level-1 day looked like on September 20.
Common questions about Six Flags Great Adventure crowds
When is Six Flags Great Adventure least crowded in 2026?
Across the 2024-2026 seasons we've measured, July and June run quietest, averaging level 3.1 out of 10. Within any week, Wednesdays usually post the lowest levels. The calendar above shows every day, so check your exact dates.
How busy is Six Flags Great Adventure on weekends?
Saturdays average level 4.7 and Sundays 3.7, against 3.5 on weekdays, measured across 2024-2026. The quietest day of the week is Wednesday at 2.9.
How accurate is this crowd calendar?
Past days show measured crowd levels where we have them. Upcoming days are forecasts and update nightly.
What do the crowd levels 1-10 mean?
Level 1-2 is quiet, 3-4 is light, 5-6 is moderate, 7-8 is busy and 9-10 is packed. Each level comes from that day's posted wait times across the whole park.
Is the Six Flags Great Adventure crowd calendar free?
Yes. The calendar is free and you don't need an account to browse it. With a free Ride Ready account, you get live wait times, a plan preview with a few rides, and 3 ride alerts per park. Premium adds unlimited day plans with automatic replanning and unlimited alerts.
Plan your Six Flags Great Adventure visit
- Six Flags Great Adventure park guide
- Crowd calendars for every park we cover
- The 2026 Theme Park Crowd Report
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