30YearWeather
San Francisco
When to avoid visiting San Francisco, United States
Seasonal Comparison

Least Favorable Months in San Francisco

Based on 30 years of NASA satellite data, San Francisco enjoys relatively good weather year-round. However, if you're comparing months, November, July, September are the least favorable — though still perfectly visitable.

November57/100July58/100September59/100

Good news: San Francisco has no truly bad months!

With a score of 57/100, even November(the "worst" month) is still a reasonable time to visit. These months are simply the least favorable compared to other months in San Francisco, not objectively bad. Many travelers enjoy visiting during these periods and benefit from lower prices and fewer crowds.

Why November is the Least Favorable (But Still Okay) Time to Visit San Francisco

Is November a Good Time to Visit San Francisco?

👌A reasonable choice for your trip
Short Answer

Storm season alert for San Francisco in November: beyond the 16°C, 18% rain averages, hurricane risk requires travel insurance and schedule flexibility.

Decision Factors

Eastern Pacific Hurricane season active

Eastern Pacific zone - expect potential eastern pacific hurricane activity

Cold sea - swimming challenging

13.8°C sea temperature - Polar Plunge

Shoulder season - balanced conditions

80% of peak - good value with moderate crowds

Exceptional dining scene

151 Michelin-listed restaurants

Good For

  • 🥾
    Outdoor enthusiasts

    Ideal hiking conditions: 16.3°C, 18% rain chance

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

  • 💑
    Honeymoon couples

    Wedding score 92/100 with romantic weather conditions

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

  • 🎯
    Adventure seekers

    1.43m waves - good for surfing and water sports

Who Should Avoid

  • 🏖️
    Beach lovers

    Sea temperature only 13.8°C - too cold for comfortable swimming

  • 👴
    Elderly travelers

    79% humidity creates difficult conditions

  • 💼
    Business travelers

    Storm season may cause flight disruptions

900 observations30-year historical data
Confidence: 99%

Key Challenges During These Months

Storm Season

Typhoons or hurricanes can disrupt travel and cause dangerous conditions

Months to Avoid: Detailed Breakdown

Worst57

November

Eastern Pacific Hurricane season active

View details
2nd Worst58

July

Eastern Pacific Hurricane season active, Peak tourist season

View details
3rd Worst59

September

Eastern Pacific Hurricane season active, Peak tourist season

View details

Looking for the Best Time Instead?

Discover the optimal months to visit San Francisco with ideal weather conditions, fewer crowds, and better prices.

Best Time to Visit San Francisco

Frequently Asked Questions

When should I avoid visiting San Francisco?

Based on 30 years of data, the most challenging months are November, July, September. Primary concerns include: eastern pacific hurricane season active.

What is the worst month to visit San Francisco?

November is typically the most challenging month, scoring only 57/100 in our travel conditions analysis.

Can I still visit during these months?

Yes, many travelers still visit during challenging months. Come prepared with appropriate gear, flexible bookings, and backup plans. Lower prices and fewer tourists can offset the weather challenges.

Are hotels cheaper during these months?

Often yes. Low season typically means reduced hotel rates, easier reservations, and fewer crowds at popular attractions. Some travelers prefer this trade-off.