Busiest National Parks in August

These parks run well above their typical crowd levels in August, measured as a crowd index (1.0 = the park's average month) from National Park Service visitation records. A high index means August is one of that park's peak months — expect full lots and busy trails.

1. 1
   Wrangell - St EliasAlaska
   Very busy3.31×
2. 2
   Governors IslandNew York
   Very busy3.17×
3. 3
   Grand PortageMinnesota
   Very busy3.14×
4. 4
   DenaliAlaska
   Very busy3.13×
5. 5
   Sleeping Bear DunesMichigan
   Very busy3.08×
6. 6
   NiobraraNebraska
   Very busy3.07×
7. 7
   Kenai FjordsAlaska
   Very busy3.06×
8. 8
   Wolf Trap National Park for the Performing ArtsVirginia
   Very busy3.02×
9. 9
   Apostle IslandsWisconsin
   Very busy3.02×
10. 10
    Klondike Gold RushAlaska
    Very busy2.96×
11. 11
    Mount RainierWashington
    Very busy2.91×
12. 12
    GlacierMontana
    Very busy2.87×
13. 13
    Pictured RocksMichigan
    Very busy2.85×
14. 14
    Crater LakeOregon
    Very busy2.76×
15. 15
    Perry's Victory & International PeaceOhio
    Very busy2.69×
16. 16
    Devils TowerWyoming
    Very busy2.68×
17. 17
    OlympicWashington
    Very busy2.64×
18. 18
    VoyageursMinnesota
    Very busy2.64×
19. 19
    Jewel CaveSouth Dakota
    Very busy2.64×
20. 20
    Upper DelawareNew York, Pennsylvania
    Very busy2.60×
21. 21
    Boston African AmericanMassachusetts
    Very busy2.60×
22. 22
    Fire IslandNew York
    Very busy2.60×
23. 23
    Glacier BayAlaska
    Very busy2.56×
24. 24
    AcadiaMaine
    Very busy2.54×
25. 25
    Saint CroixWisconsin, Minnesota
    Very busy2.51×
26. 26
    Theodore RooseveltNorth Dakota
    Very busy2.46×
27. 27
    BadlandsSouth Dakota
    Very busy2.45×
28. 28
    Timpanogos CaveUtah
    Very busy2.40×
29. 29
    Grand TetonWyoming
    Very busy2.37×
30. 30
    Mount RushmoreSouth Dakota
    Very busy2.36×
31. 31
    YellowstoneIdaho, Montana, Wyoming
    Very busy2.34×
32. 32
    Bighorn CanyonMontana, Wyoming
    Very busy2.34×
33. 33
    Lassen VolcanicCalifornia
    Very busy2.33×
34. 34
    OzarkMissouri
    Very busy2.30×
35. 35
    Little Bighorn BattlefieldMontana
    Very busy2.29×
36. 36
    Assateague IslandMaryland, Virginia
    Very busy2.24×
37. 37
    SitkaAlaska
    Very busy2.19×
38. 38
    Cape CodMassachusetts
    Very busy2.18×
39. 39
    Lake RooseveltWashington
    Very busy2.11×
40. 40
    DinosaurColorado, Utah
    Very busy2.11×