Best time to visit San Juan National Historic Site
No month averages mild weather at San Juan National Historic Site; January and February come closest (average highs 83°F and 84°F). March is busiest, with about 162,000 visitors. September is the quietest.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
Month by month
- Station
- San Juan L M Marin AP, PR RQW00011641
- Lat / lon
- 18.43, -66.01
- Elevation
- 9 ft
- From park center
- 7.6 mi
- Second station
- Aibonito 1 S, PR 2,330 ft
- Normals
- 1991–2020
- Visits
- 2023–2025
| Field | Janbest | Febbest | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High, °F | 83° | 84° | 85° | 86° | 87° | 89° | 89° | 89° | 89° | 89° | 86° | 84° | 87° |
| Low, °F | 72° | 72° | 72° | 74° | 76° | 77° | 78° | 78° | 78° | 77° | 75° | 73° | 75° |
| High at 2,330 ft, °F | 74° | 75° | 76° | 78° | 80° | 81° | 81° | 82° | 81° | 80° | 77° | 75° | 78° |
| Precipitation, in | 4.1 | 2.6 | 2.2 | 4.6 | 5.5 | 4.7 | 6.0 | 6.3 | 6.5 | 5.2 | 7.4 | 4.8 | 59.9 |
| Snow, in | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Daylight, h:mm | 11:08 | 11:31 | 11:59 | 12:32 | 12:59 | 13:14 | 13:08 | 12:45 | 12:13 | 11:41 | 11:14 | 11:02 | |
| Visitors, thousands | 123 | 126 | 162 | 127 | 108 | 117 | 136 | 96 | 60 | 66 | 85 | 144 | 1,349 |
| Crowds | Busy | Busy | Very busy | Busy | Busy | Busy | Very busy | Busy | Moderate | Moderate | Moderate | Very busy | |
| Weather | Hot | Hot | Hot | Hot | Hot | Hot | Hot | Hot | Hot | Hot | Hot | Hot |
| Month | High °F | Low °F | High at 2,330 ft | Precip., in | Snow, in | Daylight | Visitors | Crowds | Weather |
|---|---|---|---|---|---|---|---|---|---|
| Januarybest | 83° | 72° | 74° | 4.1 | 0 | 11:08 | 123,000 | Busy | Hot |
| Februarybest | 84° | 72° | 75° | 2.6 | 0 | 11:31 | 126,000 | Busy | Hot |
| March | 85° | 72° | 76° | 2.2 | 0 | 11:59 | 162,000 | Very busy | Hot |
| April | 86° | 74° | 78° | 4.6 | 0 | 12:32 | 127,000 | Busy | Hot |
| May | 87° | 76° | 80° | 5.5 | 0 | 12:59 | 108,000 | Busy | Hot |
| June | 89° | 77° | 81° | 4.7 | 0 | 13:14 | 117,000 | Busy | Hot |
| July | 89° | 78° | 81° | 6.0 | 0 | 13:08 | 136,000 | Very busy | Hot |
| August | 89° | 78° | 82° | 6.3 | 0 | 12:45 | 96,000 | Busy | Hot |
| September | 89° | 78° | 81° | 6.5 | 0 | 12:13 | 60,000 | Moderate | Hot |
| October | 89° | 77° | 80° | 5.2 | 0 | 11:41 | 66,000 | Moderate | Hot |
| November | 86° | 75° | 77° | 7.4 | 0 | 11:14 | 85,000 | Moderate | Hot |
| December | 84° | 73° | 75° | 4.8 | 0 | 11:02 | 144,000 | Very busy | Hot |
| Year | 87° | 75° | 78° | 59.9 | 0 | 1,349,000 | |||
Year: average high and low, total precipitation and snowfall, total visitors. T = trace (under 0.05 in). – = not measured at this station. Updated .
- Hottest September, average high 89°F
- Coldest nights February, average low 72°F
- Source NOAA National Centers for Environmental Information; National Park Service
- Visitors a year about 1,349,000 (2023–2025 average)
- State Puerto Rico
Elevation matters here: the record's second station, Aibonito 1 S, PR, sits at 2,330 ft, against 9 ft for San Juan L M Marin AP, PR. Expect conditions between the two depending on where you go.
Closures, reservations and alerts: San Juan National Historic Site on nps.gov
Nearby
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