Visitation · National Monument

Castillo de San Marcos National Monument visitation by month and year

March is the busiest month at Castillo de San Marcos, when the average temperature nearby is 65 degrees. October is the quietest, and the average temperature then is 74 degrees. The gap between them is narrow, 67,921 against 31,475. The peak sits well away from the warmest month, which is July. Annual visits fell 11.2 percent, from 673,395 in 2019 to 598,070 in 2025.

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Visits by month, with temperature and precipitation

Bars are the average recreation visits in each month over 2021 to 2025. The line is the average temperature at St Augustine Lighthouse, 2 miles from the park's reference point at 12 feet, station USC00087826 in the NOAA 1991 to 2020 climate normals. The lower panel is monthly rain from the same station, which records under an inch of snow a year.

Annual visits, 1979 to 2025

Recreation visits per calendar year. A year with a missing month is left blank rather than estimated.

The last ten years

Year	Recreation visits	Change on prior year
2025	598,070	+3.1%
2024	579,825	-10.3%
2023	646,703	+3.5%
2022	624,841	+25.3%
2021	498,623	+98.6%
2020	251,061	-62.7%
2019	673,395	-10.0%
2018	748,058	-14.7%
2017	876,975	+2.6%
2016	854,664	+4.3%

Visitation at other parks

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Source: NPS Visitor Use Statistics, monthly recreation visits, as compiled for Publicopia Labs. A year is shown only when all twelve months were reported. Temperature, precipitation and snowfall normals are the 1991 to 2020 monthly averages published by NOAA NCEI for station USC00087826, 12 feet above sea level. Data refreshed October 14, 2026.