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Shinjuku Gyoen in September

新宿御苑 · Tokyo · September 2026

Across all 30 days of September, Shinjuku Gyoen averages 27/100 on the crowd index. The calmest day looks like Wed 16 Sep 2026 and the worst is Tue 22 Sep 2026.

No major curated events fall in September at this location — crowd levels are driven mostly by weekends, holidays and season.

Every day in September

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Quietest dates in September

  • Wed 16 Sep 2026Uncrowded
  • Thu 17 Sep 2026Uncrowded
  • Mon 14 Sep 2026Moderate
  • Tue 15 Sep 2026Moderate
  • Mon 7 Sep 2026Moderate

Busiest dates in September

  • Tue 22 Sep 2026Moderate
  • Wed 23 Sep 2026Moderate
  • Sun 27 Sep 2026Moderate
  • Sat 5 Sep 2026Moderate
  • Sun 6 Sep 2026Moderate

Weekday vs weekend

Weekdays average 26/100. Weekends and public holidays average 30/100.

Common questions

Is September a good time to visit Shinjuku Gyoen?
September averages 27 out of 100 on the crowd index at Shinjuku Gyoen. The quietest dates are around Wed 16 Sep, Thu 17 Sep, Mon 14 Sep, and the busiest is Tue 22 Sep.
What is the least crowded day in September at Shinjuku Gyoen?
Wed 16 Sep 2026 — forecast "Uncrowded" at 21/100.
Are weekends much busier at Shinjuku Gyoen in September?
Weekdays average 26/100 and weekends and public holidays average 30/100, a difference of 4 points on the crowd index.

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Other months: January · February · March · April · May · June · July · August · October · November · December

How this forecast is built

Each day's crowd level combines the landmark's baseline popularity, Japanese national holidays (computed from the official rules, including substitute holidays), curated local festival and season windows, a national tourism seasonality curve derived from published visitor-arrival patterns, and live rain probability from the Japan Meteorological Agency — weighted by how much that specific place actually empties out in the rain.

It's a model, not a measurement. It's good at "this weekend will be much worse than the following Tuesday" and it is not a headcount. Days beyond the JMA's ~7-day window use seasonal rain climatology.