United States San Francisco Weather in July (peak fog) — Climate Guide
July (peak fog) in San Francisco is Moderate
July (peak fog) is Moderate for San Francisco.
July is peak fog month + peak tourist crowds + peak hotel prices. **July 4 fireworks** over the Bay are spectacular (Pier 39 + Crissy Field viewing). Karl the Fog blankets the city most mornings; the Golden Gate Bridge is often invisible until 1pm. The 'shorts + sweater' SF tourist look is universal.
Travel score
San Francisco July (peak fog) Weather Stats
Avg High
19°C
Avg Low
13°C
Rainy Days
0
0mm total
Sunshine
9h
Daily avg
Humidity
78%
Slightly humid
UV Index
10
Very high
Wind
16 km/h
Gusts 35
Sea Temp
15°C
Avg water temp
Crowds
Very busy
At attractions
July (peak fog) Sunrise & Sunset
Air Quality
PM2.5
9 μg/m³
PM10
18 μg/m³
Status
Good
Feels-Like Temperature & Wind
Feels like
Daytime
19°C
Nighttime
13°C
Humidity and wind affect how the actual temperature feels.
Wind
16 km/h
Max gust 35 km/h
Activities Recommended for July (peak fog)
July (peak fog) Travel Pros & Cons
Pros
- No rain (literally 0 days)
- July 4 fireworks over the Bay
- Long daylight
Cons
- 19/13°C cool
- Peak fog (Karl)
- Maximum tourist crowds + hotel prices
July (peak fog) Events & Festivals
- July 4 fireworks (Pier 39 + Crissy Field)
- Summer vacation peak
San Francisco in July (peak fog) — Full Picture
July is peak fog month + peak tourist crowds + peak hotel prices. **July 4 fireworks** over the Bay are spectacular (Pier 39 + Crissy Field viewing). Karl the Fog blankets the city most mornings; the Golden Gate Bridge is often invisible until 1pm. The 'shorts + sweater' SF tourist look is universal.
What to Wear & What to Pack
Peak summer fog — same as June. Sweater + jacket evenings non-negotiable. Sunscreen + sunglasses for afternoons when fog burns off.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
17.3°C
11°C
5.3/mo
Summer (Jun·Jul·Aug)
Current19.3°C
13.3°C
0.3/mo
Autumn (Sep·Oct·Nov)
20.3°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 July (peak fog) Hotel Picks
Frequently Asked Questions
Is July (peak fog) a good time to visit San Francisco?
San Francisco in July (peak fog) is Moderate. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in San Francisco in July (peak fog)?
San Francisco July (peak fog) averages a high of 19°C and a low of 13°C.
Does it rain much in San Francisco in July (peak fog)?
San Francisco July (peak fog) averages 0mm of rainfall over about 0 rainy days.
What should I wear in San Francisco in July (peak fog)?
Peak summer fog — same as June. Sweater + jacket evenings non-negotiable. Sunscreen + sunglasses for afternoons when fog burns off.
What time are sunrise and sunset in San Francisco in July (peak fog)?
San Francisco July (peak fog) sunrise is 06:05 and sunset is 20:35, with 14h 30m of daylight.
What's the air quality like in San Francisco in July (peak fog)?
San Francisco July (peak fog) air quality (AQI) averages 35, rated Good. PM2.5 averages 9μg/m³.
What activities are recommended in San Francisco in July (peak fog)?
In July (peak fog), San Francisco is great for Golden Gate (afternoons), Alcatraz, Ferry Building.
Is July (peak fog) peak season in San Francisco?
San Francisco July (peak fog) 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.