United States San Francisco Weather in October (Indian summer continues) — Climate Guide
October (Indian summer continues) in San Francisco is Excellent
October (Indian summer continues) is Excellent for San Francisco.
October continues the Indian summer + adds spectacle: **Fleet Week** (1st week) brings US Navy Blue Angels jets ripping over the Bay (Crissy Field for best views) + ships docking at Pier 27. **Halloween in the Castro** (Oct 31) is the legendary LGBTQ+ street party. Possibly the best 2-week stretch of the year.
Travel score
San Francisco October (Indian summer continues) Weather Stats
Avg High
21°C
Avg Low
13°C
Rainy Days
3
28mm total
Sunshine
8h
Daily avg
Humidity
73%
Comfortable
UV Index
6
High
Wind
13 km/h
Gusts 28
Sea Temp
15°C
Avg water temp
Crowds
Very busy
At attractions
October (Indian summer continues) Sunrise & Sunset
Air Quality
PM2.5
9 μg/m³
PM10
18 μg/m³
Status
Good
Feels-Like Temperature & Wind
Feels like
Daytime
21°C
Nighttime
13°C
Humidity and wind affect how the actual temperature feels.
Wind
13 km/h
Max gust 28 km/h
Activities Recommended for October (Indian summer continues)
October (Indian summer continues) Travel Pros & Cons
Pros
- Weather 21/13°C ideal
- Sunny
- Fleet Week + Halloween Castro
Cons
- Hotel rates peak
- Crowds at Fleet Week + Castro
October (Indian summer continues) Events & Festivals
- Fleet Week (1st week — Blue Angels over the Bay)
- Halloween in the Castro (Oct 31)
San Francisco in October (Indian summer continues) — Full Picture
October continues the Indian summer + adds spectacle: **Fleet Week** (1st week) brings US Navy Blue Angels jets ripping over the Bay (Crissy Field for best views) + ships docking at Pier 27. **Halloween in the Castro** (Oct 31) is the legendary LGBTQ+ street party. Possibly the best 2-week stretch of the year.
What to Wear & What to Pack
Autumn — high 21°C, low 13°C. Light jacket + sweater. Halloween costume optional in the Castro Oct 31.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
17.3°C
11°C
5.3/mo
Summer (Jun·Jul·Aug)
19.3°C
13.3°C
0.3/mo
Autumn (Sep·Oct·Nov)
Current20.3°C
12.7°C
3.7/mo
Winter (Dec·Jan·Feb)
14.3°C
8.3°C
10.3/mo
San Francisco Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 14° | 8° | 11d·110mm | 5h | 75% | 3 | Quiet | Low season | |
| 15° | 9° | 10d·110mm | 6h | 73% | 4 | Quiet | Low season | |
| 16° | 10° | 8d·75mm | 8h | 70% | 5 | Moderate | Shoulder | |
| 17° | 11° | 5d·35mm | 9h | 70% | 7 | Moderate | Shoulder | |
| May (Best) | 19° | 12° | 3d·18mm | 10h | 70% | 8 | Busy | Peak |
| 19° | 13° | 1d·5mm | 9h | 75% | 9 | Very busy | Peak | |
| 19° | 13° | 0d·0mm | 9h | 78% | 10 | Very busy | Peak | |
| 20° | 14° | 0d·0mm | 9h | 78% | 9 | Very busy | Peak | |
| 22° | 14° | 1d·8mm | 10h | 73% | 8 | Very busy | Peak | |
| 21° | 13° | 3d·28mm | 8h | 73% | 6 | Very busy | Peak | |
| 18° | 11° | 7d·70mm | 7h | 73% | 4 | Busy | Peak | |
| 14° | 8° | 10d·110mm | 5h | 75% | 3 | Very busy | Peak |
View Other Months
San Francisco October (Indian summer continues) Hotel Picks
Frequently Asked Questions
Is October (Indian summer continues) a good time to visit San Francisco?
San Francisco in October (Indian summer continues) is Excellent. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in San Francisco in October (Indian summer continues)?
San Francisco October (Indian summer continues) averages a high of 21°C and a low of 13°C.
Does it rain much in San Francisco in October (Indian summer continues)?
San Francisco October (Indian summer continues) averages 28mm of rainfall over about 3 rainy days.
What should I wear in San Francisco in October (Indian summer continues)?
Autumn — high 21°C, low 13°C. Light jacket + sweater. Halloween costume optional in the Castro Oct 31.
What time are sunrise and sunset in San Francisco in October (Indian summer continues)?
San Francisco October (Indian summer continues) sunrise is 07:15 and sunset is 18:35, with 11h 20m of daylight.
What's the air quality like in San Francisco in October (Indian summer continues)?
San Francisco October (Indian summer continues) air quality (AQI) averages 35, rated Good. PM2.5 averages 9μg/m³.
What activities are recommended in San Francisco in October (Indian summer continues)?
In October (Indian summer continues), San Francisco is great for Golden Gate Bridge, Fleet Week (Crissy Field for jets), Halloween Castro.
Is October (Indian summer continues) peak season in San Francisco?
San Francisco October (Indian summer continues) crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit San Francisco
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.