January
January visitability 49, crowd 24, value 52.
Best Time to Visit
Best Time to Visit Castillo de San Marcos
Best primary window for Castillo de San Marcos: May, with April and June as strong shoulder months.
October 27, 2026Data snapshot
4Source cards
This page lists month windows for Castillo de San Marcos National Monument from the checked-in NPS snapshot and the dated source cards on the page.
Answer Brief
Answer-first planning signal
- Best current use
- Castillo de San Marcos National Monument is listed as a National Monument in the checked-in NPS identity snapshot.
- Best months
- May, April, June
- Peak crowd months
- July, August, June
- Current signal
- Castillo de San Marcos National Monument is listed as a National Monument in FL in the checked-in NPS identity snapshot. 4 source cards on this page. Data snapshot: October 27, 2026. Official NPS page: https://www.nps.gov/casa/index.htm.
- Visitor takeaway
- Month windows for Castillo de San Marcos National Monument are listed on this page. Official NPS page: https://www.nps.gov/casa/index.htm.
- What it sounds like
- Castillo de San Marcos audio on this page is a labeled modeled cue, not a field recording.
Seasonality
Best Windows
Month windows listed on this page: primary May, April; lower-crowd April, March; peak July, August.
- Primary window
- May, April
- Best value
- April, March
- Peak pressure
- July, August
Monthly Curve
Month-by-Month Snapshot
Each month lists visitability, crowd, and value figures from this page's month table.
February
February visitability 53, crowd 24, value 55.
March
March visitability 60, crowd 28, value 62.
April
April visitability 63, crowd 42, value 63.
May
May visitability 64, crowd 58, value 62.
June
June visitability 62, crowd 76, value 59.
July
July visitability 59, crowd 92, value 54.
August
August visitability 60, crowd 90, value 55.
September
September visitability 61, crowd 74, value 57.
October
October visitability 61, crowd 56, value 59.
November
November visitability 58, crowd 34, value 59.
December
December visitability 52, crowd 28, value 53.
Pressure
Reservation Pressure
Reservation-pressure figures on this page are listed by month.
- July
- 80
- August
- 78
- June
- 67
- September
- 66
Modeled Audio
Hear a modeled cue for Castillo de San Marcos
A browser-generated composition for orientation, not a field recording or live condition.
How NPS Sounds modeled audio works
Modeled cue ready.
Castillo de San Marcos visit guideMethodology
Methodology
Castillo de San Marcos National Monument source cards come from the data snapshot October 27, 2026. This page lists the NPS identity snapshot and the month table below.
- Data snapshot
- October 27, 2026
- Source cards
- 4
- Version
- checked-in NPS snapshot
- Input
- checked-in taxonomy snapshot
- Input
- month windows listed on this page
Read the NPS Sounds methodology and about NPS Sounds for how month windows are assembled.
Data Behind This Reading
Source provenance
NPS identity
highCastillo de San Marcos National Monument is identified as National Monument with NPS code casa.
SourceOfficial operations
limitedOfficial alerts should be verified on the NPS page. This site uses a checked-in snapshot, not a live operations feed.
SourceWeather and seasonality
limitedSt. Augustine has a semi-tropical climate with over 300 days of sunshine each year. Summers (May-September) are hot, bright, and humid with afternoon thunderstorms common. Temperatures range from the lower 70s to the mid 90s F. Spring (March-mid-May) and Autumn (October-late November) can be pleasant with temperatures ranging from the upper 50s into the 80s F. The Winter months (December-March) are usually dry. Temperatures can be cool ranging from the upper 30s through the 60sF.
SourceHow this page is assembled
limitedbest_time page source cards come from the data snapshot October 27, 2026.
SourceAlternatives
Cross-Park Alternatives
Other NPS places in the same state or region.
National Preserve
Big Cypress
Best primary window for Big Cypress: May, with April and June as strong shoulder months.
National Park
Biscayne
Best primary window for Biscayne: May, with April and June as strong shoulder months.
National Seashore
Canaveral
Best primary window for Canaveral: May, with April and June as strong shoulder months.
National Memorial
De Soto
Best primary window for De Soto: May, with April and June as strong shoulder months.