Best time to visit Six Flags Great Adventure in 2027

Six Flags Great Adventure — Jackson, NJ. Model-based crowd guide (Walk-On → Peak); not official attendance. Check the Six Flags Great Adventure crowd calendar for the exact month you’re booking.

The 10 quietest weeks of 2027

Ranked by our model’s average daily score across each Monday-to-Sunday week. If your dates are flexible, start here — the calmest weeks are spread across April, May.

1. Mon, Apr 12 – Sun, Apr 18 — expected Moderate (avg score 1.86)
2. Mon, Apr 19 – Sun, Apr 25 — expected Moderate (avg score 1.86)
3. Mon, Apr 26 – Sun, May 2 — expected Moderate (avg score 1.86)
4. Mon, May 3 – Sun, May 9 — expected Moderate (avg score 1.86)
5. Mon, May 10 – Sun, May 16 — expected Moderate (avg score 1.86)
6. Mon, May 17 – Sun, May 23 — expected Moderate (avg score 1.86)
7. Mon, Jun 7 – Sun, Jun 13 — expected Moderate (avg score 1.86)
8. Mon, Aug 16 – Sun, Aug 22 — expected Moderate (avg score 1.86)
9. Mon, Aug 23 – Sun, Aug 29 — expected Moderate (avg score 1.86)
10. Mon, Sep 13 – Sun, Sep 19 — expected Moderate (avg score 1.86)

Seasonal closure: Six Flags Great Adventure is typically closed in January, February, March, December, so those months don’t appear in the table. Exact operating dates vary by year — check the official park calendar before booking travel.

Best months, ranked

November edges out the rest as the calmest month (Walk-On on average), while July runs busiest (Heavy). Shoulder-season weekdays are the pattern behind most of the quiet weeks above.

Busiest weeks to avoid

If you must travel in these windows, go in with a plan: arrive at opening, use the compare tool to sanity-check nearby weeks, and read our Peak-day survival strategy.

1. Mon, Jul 5 – Sun, Jul 11 — expected Heavy (avg score 3.43)
2. Mon, Aug 9 – Sun, Aug 15 — expected Heavy (avg score 2.86)
3. Mon, Aug 2 – Sun, Aug 8 — expected Heavy (avg score 2.86)
4. Mon, Jul 26 – Sun, Aug 1 — expected Heavy (avg score 2.86)
5. Mon, Jul 19 – Sun, Jul 25 — expected Heavy (avg score 2.86)

How to use this guide

Pick a target week from the quiet list, then open the Six Flags Great Adventure crowd calendar for that month and tap individual days — a quiet week can still hide one Heavy Saturday. Book tickets once the week is set; prices rarely drop closer to the date.

Honest limits

New attractions, temporary closures, conventions, weather, and one-off events can move real-world crowds away from seasonal averages. We don’t invent accuracy percentages or claim live attendance. Read How Crowd Predictions Work and the disclaimer.

FAQ

Six Flags Great Adventure crowd calendar · Compare parks · Quietest months across all 35 parks · Cedar Point · Kings Island · How predictions work