Yellowstone · Lamar Valley wolf activity +18%Yosemite · Tioga Pass clear openZion · Angels Landing wait 42mGlacier · Going-to-the-Sun opens Jun 15Acadia · Cadillac sunrise reservation 94% bookedGrand Canyon · Bright Angel trail normalOlympic · Hoh rainforest moisture 93%Joshua Tree · Star visibility tonight Bortle 2Rocky Mountain · Trail Ridge snowpack 142% normGreat Smoky · Clingmans Dome fog −2°C dewYellowstone · Lamar Valley wolf activity +18%Yosemite · Tioga Pass clear openZion · Angels Landing wait 42mGlacier · Going-to-the-Sun opens Jun 15Acadia · Cadillac sunrise reservation 94% bookedGrand Canyon · Bright Angel trail normalOlympic · Hoh rainforest moisture 93%Joshua Tree · Star visibility tonight Bortle 2Rocky Mountain · Trail Ridge snowpack 142% normGreat Smoky · Clingmans Dome fog −2°C dew
Home/Parks/Castle Clinton
National Monument · Castle Clinton National Monument

The strongest visit window for Castle Clinton is May through April.

Located at the southern tip of Manhattan, Castle Clinton marks the place where New York City began and reflects the growth of both the city and the nation. Built to defend the harbor during the War of 1812, it has since welcomed theatergoers, immigrants, and sightseers—and today continues to greet millions of visitors to New York Harbor.

Summary at a glance

The signal is clear. By analyzing Castle Clinton's historical weather normals alongside visitation data, we have identified the optimal windows for your trip.

Best Months
May
April, June
Budget Months
May
April, June
Peak Crowd
July
High density
Region
appalachian
Core Experiences

Month-by-month analysis

We've mapped out the seasons based on historical data. Below is the monthly breakdown.

Primary Window

The best time to visit is during May and April and June. This aligns with optimal weather and acceptable crowd levels.

Peak Congestion

July, August, June are typically the busiest. Expect high traffic and book well in advance if you plan to visit during these times.

Budget Season

Consider May or April or June for fewer crowds and lower costs. Note that some facilities may have reduced hours.

Getting there

Use the closest major airport and a regional drive plan for Castle Clinton.

Use the official NPS page for Castle Clinton National Monument for the latest access and entrance details.

What the data sounds like

Below is the live sonification for Castle Clinton. The audio synthesizes an ambient drone tuned to current telemetry data.

Castle Clinton — Live sonification
48-hour rolling · 23 channels
Visitor densityWildlife activity0.0h

Powered by Web Audio API and real-time data feeds.

Methodology

This intelligence is derived from Castle Clinton's data profile, structured by the Constitutional CMS architecture.

  • Publish Tier: SHELL
  • Quality Score: 58
  • Methodology: materialized