National Park Crowd Calendar

Frequently asked questions

What is the least crowded month to visit national parks?

System-wide, January is the quietest month at roughly 0.41× the average month across 52 parks. Fewer people is genuinely good news for solitude and lodging — the trade-off is weather, which is why the quietest month is rarely the highest-scoring one for any individual park.

When are national parks busiest?

July is the busiest month system-wide, running about 1.90× the average month. Summer dominates almost everywhere, which is why the shoulder-season months usually score best on our combined crowd, weather and daylight measure.

What is the best month overall to visit a national park?

Averaged across 52 parks, September scores highest on our combined crowd, weather and daylight measure (59/100). The right month still varies park by park — a desert park and an alpine park peak at opposite ends of the year — so use each park's own page for the specific recommendation.

What does the crowd index mean?

The crowd index compares a month against the same park's own average month, so 1.0 is average, 1.5 means about 50% busier than typical and 0.6 means about 40% quieter. Indexing per park is what makes a remote monument and a marquee national park comparable.