San Francisco Maritime National Historical Park in December
In December, San Francisco Maritime National Historical Park averages a high of 58°F and a low of 47°F, with 4.8 inches of precipitation (rain plus melted snow). About 168,000 people visit, the 9th busiest of 12 (moderate). Days are 9 hours 33 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 58° / 47°F
- Precipitation
- 4.8in
- Snow
- –in
- Daylight
- 9h 33m
- Visitors
- 168,000
- Crowds
- Moderate
Best months for weather and crowds instead: May (busy), September (busy) and October (busy).
Higher or lower in the park, expect a different picture: Mt Diablo Junction, CA at 2,170 ft averages a December high of 53°F and a low of 41°F.
Weather 1991–2020 averages at San Francisco Dwtn, CA, 2.8 miles from the park's center, 150 ft. Second station higher up: Mt Diablo Junction, CA, 2,170 ft, 27.3 miles. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in December
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Fort Point National Historic Site | 58° / 47° | Very busy | Mild, wet |
| Golden Gate National Recreation Area | 56° / 42° | Busy | Mild, wet |
| Point Reyes National Seashore | 55° / 44° | Busy | Mild, wet |
| Pinnacles National Park | 62° / 33° | Busy | Mild, wet |
| Yosemite National Park | 46° / 28° | Quiet | Cool |
Closures, reservations and alerts: San Francisco Maritime National Historical Park on nps.gov
All twelve months at San Francisco Maritime National Historical Park · National parks to visit in December