Grand Teton crowd calendar.

Grand Teton's crowd calendar, month by month.

Each bar is a calendar month's average recreation visits over the last five years (2021-2025), shown as a share of Grand Teton's own busiest month. The full numbers are in the table below, and every month links to its own detailed page.

Reading the shape of the year.

Grand Teton's crowd calendar is a clean summer arc. July leads at about 732,000 average visits, August follows at 672,000, June at 633,000, and September at 564,000, so the four warm months dominate and together account for roughly three-quarters of the year. The park has no second season to speak of: outside summer the numbers fall away steeply on both sides.

The transitions are abrupt. April sits near 10% of peak with the high country still locked in snow, then May leaps to about 42% as the valley opens and wildlife moves down to the flats. On the back end, October drops to about 34% as early snow closes the higher routes, and by November the park is under a tenth of peak. December, the quietest month at about 49,000 visits, and January and February all sit in the same deep-winter band, when Teton becomes a cross-country-ski and wildlife-watching park rather than a road-trip one.

What makes this calendar easy to plan around is that the busy season and the quiet season are so cleanly separated. There is little point agonizing over June versus July for crowds; they are all near the top. The real decision is whether to accept the summer plateau or slide to a shoulder. September is the strongest of those shoulders: at about 77% of peak it is still a busy month, but it has eased off the July wall, the biting insects that shorten July walks are gone, and elk rut begins to stir in the valley. May offers the opposite trade, a much quieter park (about 42% of peak) with the high country not yet fully open. For the weather, access, and best-window verdict behind these crowd numbers, see the best-time-to-visit page.

The shoulder window

The shoulders are May (about 42% of peak, valley opening) and October (about 34%, first snows), with September the busy-but-easing bridge that many crowd-averse visitors target. For the full "so when should I actually go?" verdict, which weighs crowds against weather and road access, see the Grand Teton best-time-to-visit page.

How to read this calendar

Every number here is a five-year monthly mean of Recreation Visits (2021-2025) from the official NPS Visitor Use Statistics Data Package, 2025. Each bar and table row is that calendar month averaged across the last five years, so one odd weather year or one road closure does not swing the shape. The "share of peak" column expresses each month against Grand Teton's own busiest month, which is the honest way to compare a quiet month with a loud one. One limit worth stating plainly: this is monthly data, so it tells you which months are busy, not which days or weekends. For within-the-month timing, a holiday week or a summer weekend still runs busier than a plain weekday, but our data cannot measure that. Independent site, not affiliated with the National Park Service.

Common questions.

What is the busiest month at Grand Teton?

July, at about 732,000 average recreation visits, with August and June close behind. The June-through-September stretch carries roughly three-quarters of the whole year.

When is Grand Teton least busy?

December, averaging about 49,000 visits, only about 7% of the July peak. The high country closes for winter, so November through April all run at under a tenth of summer.

How do I avoid crowds at Grand Teton?

September is the best in-season window at about 77% of peak: eased from summer, no mosquitoes, and elk beginning to bugle. May is quieter still at about 42% but with limited high-country access. See the best-time page for the verdict.

Is Grand Teton crowded in September?

Still fairly busy but easing. September averages about 77% of the July peak, down from the midsummer wall, with the added draws of cooler air, gone mosquitoes, and the start of elk rut in the valley.