Answer
Weather planning for December (average temperatures: 57F/47F) requires preparing for marine winds. High-activity period with 300-400 sea lions.
Last verified: 2026-06-07
Back to knowledge baseseasonality
Sea Lions Pier 39 observation in December: Weather-aligned planning and temperature considerations
Weather planning for December (average temperatures: 57F/47F) requires preparing for marine winds. High-activity period with 300-400 sea lions.