Is December a Good Time to Visit San Francisco?
San Francisco in December features 12.4°C seas - too cold for swimming but stunning for coastal walks. Air temperatures average 13°C with 29% rain probability.
Decision Factors
Very high humidity
81% average humidity
Rough sea conditions
1.6m average wave height - Surfers Only
Peak tourist season
87% of annual peak - expect crowds and high prices
Cold sea - swimming challenging
12.4°C sea temperature - Polar Plunge
Exceptional dining scene
151 Michelin-listed restaurants
Good For
- 🏛️Cultural tourists
Comfortable conditions for exploring museums and sites
- 💼Business travelers
Climate-controlled meetings unaffected by weather
- 🎯Adventure seekers
1.6m waves - good for surfing and water sports
Who Should Avoid
- 🏖️Beach lovers
Sea temperature only 12.4°C - too cold for comfortable swimming
- 💰Budget travelers
Peak season means premium prices everywhere
- 👴Elderly travelers
81% humidity creates difficult conditions
