San Francisco · Month comparison
December vs October
October ranks #1 overall vs December at #10. Warmest weather, two great free festivals, Fleet Week air show — October is the answer.
December
#10 of 12 months
Strong option
Grey and wet, but Christmas lights warm Union Square and hotel rates stay reasonable.
- ↑Union Square Christmas tree and the surrounding retail district are genuinely festive in a way that suits the city's compact, walkable urban layout. The ice rink at Union Square (mid-November through January) draws locals and visitors alike, and the department store windows on Post and Geary are decorated with a craftsmanship that bigger cities have abandoned.
- ↑December, outside of Christmas week (Dec 22–Jan 2), offers solid value. The combination of rainy weather and post-Thanksgiving travel fatigue means mid-December hotel rates are often lower than equivalent October dates, with the same easy access to restaurants and attractions.
October
#1 of 12 months
Best match
Warmest weather, two great free festivals, Fleet Week air show — October is the answer.
- ↑October brings Fleet Week (typically the second weekend), when the US Navy's Blue Angels fly formation demonstrations over the bay that are visible from virtually every north-facing vantage point in the city. The show is free to watch from Crissy Field, Fort Mason, Marina Green, and dozens of rooftops and hills. It's one of the few genuinely world-class free spectacles available in any major city — an F/A-18 in full afterburner over the Golden Gate Bridge is difficult to forget.
- ↑Hardly Strictly Bluegrass (first weekend of October, Golden Gate Park) is the other great October event — a free, three-day, multi-stage music festival that draws 750,000 people over the weekend. The late Warren Hellman's gift to the city is fully funded in perpetuity: no ticket required, no commercial sponsorship wall, just an extraordinary lineup (Steve Earle, Emmylou Harris, Hazel Miller) spread across six stages in the park. It remains one of the world's great music events that most people outside the Bay Area have never heard of.
| Factor | December | October |
|---|---|---|
| Weather score | 4 | 9 |
| Value score | 6 | 6 |
| Crowd score | 7 | 6 |
| Events score | 6 | 9 |
| Atmosphere | 7 | 9 |
| Avg high temp | 13.8°C | 20.3°C |
| Monthly rain | 95mm | 28mm |
| Daily sunshine | 4.9hrs | 7.8hrs |
December trade-offs
- ↓December is a genuinely wet month — 95mm of rain spread across regular frontal systems means sustained periods of grey, windy, and wet weather that make outdoor exploration unpleasant. The windchill from Pacific fronts can push the effective temperature to 5–7°C on exposed hillsides and waterfront areas.
- ↓Christmas week (Dec 22–Jan 2) sees significant price increases and the return of tourist volumes that mid-December avoids. New Year's Eve fireworks over the bay are spectacular but draw large crowds to the Embarcadero.
October trade-offs
- ↓Fleet Week weekend causes a significant accommodation spike in the Marina and North Beach areas — waterfront-adjacent hotels during that specific weekend book out fast and charge premium rates. Planning around or far from the waterfront mitigates this.
- ↓October is increasingly busy as word of SF's "second summer" spreads. The off-peak window is smaller than it used to be — tourists who have read that September-October is the best time mean it's no longer a secret.
Scores compare months within San Francisco. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →