Best time to visit Castillo de San Marcos National Monument
January, February and November are the best balance at Castillo de San Marcos National Monument: mild and dry for the park (average highs 68° to 75°F), with busy crowds. March is busiest, with about 80,000 visitors. October is the quietest.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
Month by month
- Station
- St Augustine Lighthouse, FL USC00087826
- Lat / lon
- 29.89, -81.29
- Elevation
- 12 ft
- From park center
- 1.7 mi
- Normals
- 1991–2020
- Visits
- 2023–2025
| Field | Janbest | Febbest | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Novbest | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High, °F | 68° | 70° | 74° | 80° | 85° | 89° | 91° | 90° | 87° | 82° | 75° | 69° | 80° |
| Low, °F | 48° | 50° | 55° | 61° | 67° | 72° | 74° | 74° | 73° | 67° | 58° | 51° | 62° |
| Precipitation, in | 2.7 | 2.7 | 3.4 | 2.9 | 3.7 | 6.3 | 4.9 | 7.2 | 7.2 | 4.4 | 2.3 | 3.0 | 50.6 |
| Snow, in | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Daylight, h:mm | 10:25 | 11:05 | 11:54 | 12:51 | 13:38 | 14:03 | 13:53 | 13:13 | 12:18 | 11:24 | 10:37 | 10:14 | |
| Visitors, thousands | 59 | 57 | 80 | 62 | 45 | 47 | 51 | 33 | 32 | 23 | 51 | 69 | 608 |
| Crowds | Busy | Busy | Very busy | Busy | Busy | Busy | Busy | Moderate | Moderate | Quiet | Busy | Very busy | |
| Weather | Mild | Mild | Mild | Mild | Hot | Hot | Very hot | Hot | Hot | Hot | Mild | Mild |
| Month | High °F | Low °F | Precip., in | Snow, in | Daylight | Visitors | Crowds | Weather |
|---|---|---|---|---|---|---|---|---|
| Januarybest | 68° | 48° | 2.7 | 0 | 10:25 | 59,000 | Busy | Mild |
| Februarybest | 70° | 50° | 2.7 | 0 | 11:05 | 57,000 | Busy | Mild |
| March | 74° | 55° | 3.4 | 0 | 11:54 | 80,000 | Very busy | Mild |
| April | 80° | 61° | 2.9 | 0 | 12:51 | 62,000 | Busy | Mild |
| May | 85° | 67° | 3.7 | 0 | 13:38 | 45,000 | Busy | Hot |
| June | 89° | 72° | 6.3 | 0 | 14:03 | 47,000 | Busy | Hot |
| July | 91° | 74° | 4.9 | 0 | 13:53 | 51,000 | Busy | Very hot |
| August | 90° | 74° | 7.2 | 0 | 13:13 | 33,000 | Moderate | Hot |
| September | 87° | 73° | 7.2 | 0 | 12:18 | 32,000 | Moderate | Hot |
| October | 82° | 67° | 4.4 | 0 | 11:24 | 23,000 | Quiet | Hot |
| Novemberbest | 75° | 58° | 2.3 | 0 | 10:37 | 51,000 | Busy | Mild |
| December | 69° | 51° | 3.0 | 0 | 10:14 | 69,000 | Very busy | Mild |
| Year | 80° | 62° | 50.6 | 0 | 608,000 | |||
Year: average high and low, total precipitation and snowfall, total visitors. T = trace (under 0.05 in). – = not measured at this station. Updated .
- Hottest July, average high 91°F
- Coldest nights January, average low 48°F
- Source NOAA National Centers for Environmental Information; National Park Service
- Visitors a year about 608,000 (2023–2025 average)
- State Florida
Closures, reservations and alerts: Castillo de San Marcos National Monument on nps.gov
Nearby
- Fort Matanzas National MonumentBest: Jan, Nov and Dec · Florida
- Fort Caroline National MemorialBest: Mar, Apr and Nov · Florida
- Timucuan Ecological and Historic PreserveBest: Jan, Feb and Apr · Florida
- Cumberland Island National SeashoreBest: Jan, Nov and Dec · Georgia