Grand Canyon in September: Crowds, Weather & What to Pack

Peak crowds · VisitWhen score 65/100 · #5 of 12 months

September is peak season — expect the year's biggest crowds at Grand Canyon National Park: crowds run 81% of the July peak (429,427 average visits), days average 75°F with 12.4 hours of daylight. Computed from NPS and NOAA data.

Crowds in September

Grand Canyon averages 429,427 recreation visits in September — 81% of what July, the peak month, draws. Trailheads and parking fill accordingly — book early and start days at dawn.

Weather & daylight

Days are mild (highs average 75°F), and nights stay mild (lows average 53°F). It is typically dry (1.6″ of precipitation). Mid-month daylight runs 12.4 hours.

NOAA 1991–2020 monthly normals, station GRAND CANYON VISITOR CTR, AZ US (1 mi from park coordinates, 7,083 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of September.

What to pack for Grand Canyon in September

Computed from the month's weather normals above — not a generic list.

• Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month

If your dates are flexible, consider shifting: The computed best months for Grand Canyon are February and April.

Common questions

See also: the best national parks to visit in September · Last verified 2026-07-16