Islands of Adventure Crowd Calendar: September 2026
Universal OrlandoForecast crowds at Islands of Adventure in September 2026 average 1.8 out of 10. The lightest forecast days are Tue, Sep 29 (2.1) and Wed, Sep 30 (1.5).
Islands of Adventure day by day, September 2026
Crowds run 1–10, compared with a typical day at Islands of Adventure. Quietest Day marks a Quietest Day: still a good day at the busier end of its forecast range.
| Date | Crowd | High | Rain |
|---|---|---|---|
| Tue, Sep 1 observed | 1.3 Much quieter | – | – |
| Wed, Sep 2 observed | 1.2 Much quieter | – | – |
| Thu, Sep 3 observed | 1.2 Much quieter | – | – |
| Fri, Sep 4 observed | 1.2 Much quieter | – | – |
| Sat, Sep 5 observed | 6.5 Busier | – | – |
| Sun, Sep 6 observed | 6.7 Busier | – | – |
| Mon, Sep 7 observed | 2.5 Much quieter | – | – |
| Tue, Sep 8 observed | 3.0 Much quieter | – | – |
| Wed, Sep 9 observed | 1.3 Much quieter | – | – |
| Thu, Sep 10 observed | 1.2 Much quieter | – | – |
| Fri, Sep 11 observed | 1.4 Much quieter | – | – |
| Sat, Sep 12 observed | 2.9 Much quieter | – | – |
| Sun, Sep 13 observed | 1.5 Much quieter | – | – |
| Mon, Sep 14 observed | 1.6 Much quieter | – | – |
| Tue, Sep 15 observed | 2.8 Much quieter | – | – |
| Wed, Sep 16 observed | 1.8 Much quieter | – | – |
| Thu, Sep 17 observed | 1.3 Much quieter | – | – |
| Fri, Sep 18 observed | 2.2 Much quieter | – | – |
| Sat, Sep 19 observed | 4.7 Average | – | – |
| Sun, Sep 20 observed | 3.0 Much quieter | – | – |
| Mon, Sep 21 observed | 3.8 Quieter | – | – |
| Tue, Sep 22 observed | 1.9 Much quieter | – | – |
| Wed, Sep 23 observed | 1.4 Much quieter | – | – |
| Thu, Sep 24 observed | 2.2 Much quieter | – | – |
| Fri, Sep 25 observed | 3.3 Much quieter | – | – |
| Sat, Sep 26 observed | 6.5 Busier | – | – |
| Sun, Sep 27 observed | 3.8 Quieter | – | – |
| Mon, Sep 28 observed | 1.6 Much quieter | – | – |
| Tue, Sep 29 Quietest Day | 2.1 Much quieter | 85°F | 6% |
| Wed, Sep 30 Quietest Day | 1.5 Much quieter | 86°F | 18% |
Is September busy at Islands of Adventure?
In past years September has been the 1st quietest of 12 months at Islands of Adventure: an observed average of 2.7, against 5.0 across the whole year. Its quietest weekday in September has been Wednesday (average 1.9).
September by year
September by weekday
Plan around it
Plan a trip to sequence your park days around the lightest forecast crowds and the best weather, or see Islands of Adventure’s full crowd history by month, weekday and hour.
September 2026 elsewhere:Epic UniverseUniversal Studios Florida
Forecasts are refreshed daily; these figures are as of September 29, 2026. Past years are observed crowd levels from Queue-Times.com wait data.